WO2023110138A1 - Inhibitors of transglutaminases - Google Patents
Inhibitors of transglutaminases Download PDFInfo
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- WO2023110138A1 WO2023110138A1 PCT/EP2021/086674 EP2021086674W WO2023110138A1 WO 2023110138 A1 WO2023110138 A1 WO 2023110138A1 EP 2021086674 W EP2021086674 W EP 2021086674W WO 2023110138 A1 WO2023110138 A1 WO 2023110138A1
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- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/75—Amino or imino radicals, acylated by carboxylic or carbonic acids, or by sulfur or nitrogen analogues thereof, e.g. carbamates
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- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D453/00—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids
- C07D453/02—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids containing not further condensed quinuclidine ring systems
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
- C07D513/04—Ortho-condensed systems
Definitions
- Transglutaminases are part of the class of transferases and according to EC nomenclature they are correctly designated as “protein-glutamine: amine ⁇ -glutamyl transferases” (EC 2.3.2.13). They link the ⁇ -amino group of the amino acid lysine and the ⁇ -glutamyl group of the amino acid glutamine forming an isopeptide bond while ammonia is released.
- transglutaminases play an important role in many therapeutic areas such as the cardiovascular diseases (thrombosis and atherosclerosis), autoimmune diseases (celiac disease, Duhring-Brocq-disease, gluten ataxia), neurodegenerative diseases (Alzheimer’s disease, Parkinson’s disease, Huntington’s disease), dermatological diseases (ichthyosis, psoriasis, acne) as well as in wound healing and inflammatory diseases (e.g. tissue fibrosis) (J.M. Wodzinska, Mini-Reviews in medical chemistry, 2005, 5, 279 - 292).
- Celiac disease a gluten intolerance, however, is one of the most important indications.
- Celiac disease is characterized by a chronic inflammation of the mucosa of the small intestine.
- the intestinal epithelium is successively destroyed after ingestion of gluten-containing food resulting in reduced absorption of nutrients which again has massive impact on the patients affected and is for example associated with symptoms such as loss of weight, anemia, diarrhea, nausea, vomiting, loss of appetite and fatigue. Due to these findings, there is a large demand for the development of a medicament for the treatment of celiac disease as well as of other diseases associated with tissue transglutaminase (transglutaminase 2, TG2, tTG).
- tissue transglutaminase is a central element during pathogenesis.
- the endogenous enzyme catalyses the deamidation of gluten/gliadin in the small intestinal mucosa and thus triggers the inflammatory response. Therefore inhibitors of tissue transglutaminase are suitable to be used as active agents for medication.
- Another very important group of indications for tissue transglutaminase inhibitors are fibrotic disorders. Fibrotic disorders are characterized by the accumulation of cross- linked extracellular matrix proteins. Diabetic nephropathy, cystic fibrosis, idiopathic pulmonary fibrosis, kidney fibrosis as well as liver fibrosis belong to the most important fibrotic disorders to be addressed with the compounds disclosed.
- the objective of the present invention is to provide novel, most probably reversible or irreversible inhibitors of transglutaminases, in particular transglutaminase 2 and methods for the synthesis of said inhibitors as well as several uses of these inhibitors. Said objective is solved by the technical teachings of the independent claims. Further advantageous embodiments, aspects and details of the invention are evident from the dependent claims, the description and the examples. Surprisingly, it has been found that reversible/irreversible inhibitors having a chemical warhead as disclosed herein inhibit effectively transglutaminases including tissue transglutaminase called transglutaminase 2 or TG2. Herein these terms are used synonymous.
- such chemical warhead moiety is particularly selected from reversible warheads such as ⁇ -ketoaldehydes, ⁇ -ketoketones, ⁇ -ketoacids, ⁇ -ketoesters, ⁇ - ketoamides as well as irreversible warheads such as ⁇ ,ß-unsatureated-ketoester, ⁇ ,ß- unsatureated ketoamide and ⁇ ,ß-unsatureated-sulfone.
- reversible warheads such as ⁇ -ketoaldehydes, ⁇ -ketoketones, ⁇ -ketoacids, ⁇ -ketoesters, ⁇ - ketoamides as well as irreversible warheads such as ⁇ ,ß-unsatureated-ketoester, ⁇ ,ß- unsatureated ketoamide and ⁇ ,ß-unsatureated-sulfone.
- the compounds of the present invention act as selective inhibitors of transglutaminase 2.
- the present invention relates to compounds of the general formula (I): wherein L represents –L1– or L1 represents –CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO—, –CH 2 CH 2 CO—; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or –NRN1CH(CH 3 )–, R1 represents R2 represents , , ,
- 1-adamantyl and “2-bicyclo[3.1.1]heptyl” have the following structures respectively: and Ra, Rb, Rc, Rd and Re have the same meanings as defined herein.
- 2-bicyclo[3.1.1]heptyl have the following structure: , or , and Ra and Rb, have the same meanings as defined herein. More preferred, the compound has any one of the formula (II-a), (II-b), (II-b1) – (II-b2), and (III-a) – (III-b ):
- the present invention refers to the compound of the formula (I) , wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.
- L represents –L1– or –L1-L2–;
- L1 represents —CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO–, –CH 2 CH 2 CO—;
- L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or –NRN1CH(CH 3 )–;
- the present invention relates to the compound of the formula (I), (I) wherein L represents –L1– or –L1-L2–; L1 represents —CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO—, –CH 2 CH 2 CO—; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or –NRN1CH(CH 3 )–; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoiso
- L1 represents –CH 2 –, or –CH 2 CO—;
- L2 represents a bond, —NRN1–, –NRN1CH N1 2–, or –NR CH(CH 3 )–;
- L1 is not –CH 2 CO—, when the compound has the formula (IV-b), wherein L2 is not –NRN1CH 2 –, when the compound has the formula (IV-c), and R2 , R3, R6, R8, R9, R10, R11 , R12 , R13, Ra, Rb, Rc, Rd and L2 have the same meanings as defined herein, preferably as defined in formula (I) or (Ib).
- Ra, and Rb have the same meanings as defined above, preferred in formula (I), or (Ib); preparably, Ra, and Rb represents independently of each other –H, –F, –Cl, –Br, –OH, –CN, –CH 3 , –C 2 H 5 , or –CO 2 Me.
- R2 represents
- the present invention refers to the compound selected from the group consisting of:
- the compound of the formula (I) has irreversible warheads such as ⁇ ,ß-unsatureated-ketoester, ⁇ ,ß-unsatureated ketoamide and ⁇ ,ß-unsatureated-sulfone.
- the compounds of the present invention act selective inhibitors of transglutaminase 2.
- the present invention refers to the compounds of the formula (I) wherein L represents –L1– or –L1–L2– ; L1 represents —CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO—, –CH 2 CH 2 CO—; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or
- L represents –L1– or –L1–L2–;
- L1 represents —CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO–, –CH 2 CH 2 CO—;
- L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or –NRN1CH(CH 3 )–;
- L1 , L2 , R2 , R3, R5 – R7 , and RN1 have the meanings as defined above.
- L , R2 , R3, and R5 – R7 have the meanings as defined above.
- L represents –L1– or –L1–L2–;
- L1 represents –CH 2 –, –CH 2 CH 2 –, –CH 2 CH 2 CH 2 –, –CH 2 CO–, –CH 2 CH 2 CO—;
- L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH 2 CH 2 –, or –NRN1CH(CH 3 )–;
- L1 , L2 , R5 – R14 , RN and RN1 have the meanings as defined herein.
- R5 represents –H, –CH 3 , –CH 2 CH 3 , –CH 2 CH 2 CH 3 , —CH(CH 3 ) 2 , –CH 2 CH 2 CH 2 CH 3 , –CH 2 CH(CH 3 ) 2 , –C(CH 3 ) 3 , –cyclo-C 3 H 5 , –cyclo-C 4 H 7 , –CH 2 –cyclo-C 3 H 5 , –CH 2 –cyclo-C 4 H 7 ;
- R6 and R7 represent independently of each other –H, –CH 3 , –CH 2 CH 3 , –CH 2 CH 2 CH 3.
- R5 represents –H, –CH 3 , –CH 2 CH 3 , –CH 2 CH 2 CH 3 , —CH(CH 3 ) 2 , –CH 2 CH 2 CH 2 CH 3 , –CH 2 CH(CH 3 ) 2 , –C(CH 3 ) 3 , –cyclo-C 3 H 5 , –cyclo-C 4 H 7 , –CH 2 –cyclo-C 3 H 5 , –CH 2 –cyclo-C 4 H 7 ; and/or R6 and R7 represent independently of each other –H, –CH 3 , –CH 2 CH 3 , –CH 2 CH 2 CH 3.
- the present invention refers to the compounds selected from the group consisting of:
- the present invention relates to a method for the synthesis of a compound of formula (I), especially any compound of any one of the formulae (Ia) – (Ie):
- a method for producing the compound of the formula (Ia) comprising: Step 1A: providing a compound 4a Step 2A: performing coupling reaction of the compound 4a with a compound 5 to obtain a compound 6a Step 3A: deprotecting an amino protecting group PG3 to obtain a compound 7a
- Step 4A performing coupling reaction of the compound 7a with a carboxylic acid (R2-CO 2 H 8) to obtain a compound 9a
- Step 5A performing oxidation reaction of the compound 9a to produce the compound of the formula (Ia) wherein L, R2 , R3,and R6 have the same meanings as defined above in formula (Ia), and PG3 is an amino protecting group.
- Step 1A ⁇ is carried out before the step 1A: (a) providing a protected aldehyde ; (b) performing a coupling reaction of the aldehyde 1 with an isocyanide (CN-R6) 2a to obtain an intermediate compound 3a (c) deprotecting the protecting groups PG1 and PG2 of the compound 3a preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4a wherein R2 , R6 have the same meanings as defined in formula (Ia), PG1 and PG3 are amino protecting groups, PG2 is a carboxyl protecting group.
- Step 1A (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with an isocyanide (CN-R6) 2a to obtain an intermediate compound 3a (c) deprotecting the protecting groups PG1 and PG2 of the compound 3a preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4a
- Step 1A providing a compound 4a
- Step 2A performing coupling reaction of the compound 4a with a compound 5 to obtain a compound 6a
- Step 3A deprotecting the amino protecting group PG3 to obtain a compound 7a
- Step 4A performing coupling reaction of the compound 7a with a carboxylic acid (R2-CO 2 H 8) to obtain a compound 9a
- Step 5A performing oxidation reaction of the compound 9a to produce the compound of the formula (Ia) wherein L, R2 , R3,and R6 have the same meanings as
- the present invention relates to a method for producing the compound of formula (Ib) comprising the following steps in the following order: Step 1B: providing a compoun Step 2B: performing coupling reaction of the compound 4b with a compound 5 to obtain a compound Step 3B: deprotecting an amino protecting group PG3 to obtain a compound 7b 7b; Step 4B: performing coupling reaction of the compound 7b with a carboxylic acid (R2-CO 2 H 8) to obtain a compound 9b 9b; Step 5B: performing oxidation reaction of the compound 9b to produce the compound of the formula (Ib) (Ib); wherein L, R2 , R3, R6 and R7 have the same meanings as defined above in the formula (Ib), and PG3 is an amino protecting group.
- the chemical warhead precursor may be firstly converted to under a basic condition such as treating with K 2 CO 3 , and then is converted to the corresponding chemical warhead by an oxidation method, preferably by using Dess-Martin periodinane (DMP), iodoxybenzoic acid (IBX), or hypochlorite/TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) in a polar solvent, as described in the chemical examples.
- DMP Dess-Martin periodinane
- IBX iodoxybenzoic acid
- hypochlorite/TEMPO 2,2,6,6-tetramethylpiperidine-1-oxyl
- the method for producing the compound of the formula (Ic) comprises the following steps in the following order: Step 1C: providing a compound 4c Step 2C: performing coupling reaction of the compound 4c with a compound 5 to obtain a compound Step 3C: deprotecting an amino protecting group PG3 to obtain a compound 7c Step 4C: performing coupling reaction of the compound 7c with a carboxylic acid (R2-CO 2 H 8) to produce the compound of the formula (Ic) wherein L, R2 , R3, R5 have the same meanings as defined above above in formula (Ic), and PG3 is an amino protecting group.
- Step 1C ⁇ is carried out before the step 1C: (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with a triphenyl phosphonium ylide 2c to obtain an intermediate compound 3c; or alternatively (b ⁇ ) performing a coupling reaction of the aldehyde 1 with a phosphonate 2c ⁇ to obtain an intermediate compound 3c; (c) deprotecting the protecting groups PG1 and PG2 of the compound 3c and introducing an amino protecting group PG3 to obtain a compound 4c.
- Step 1C ⁇ (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with a triphenyl phosphonium ylide 2c to obtain an intermediate compound 3c;
- Scheme 3 A further aspect of the present invention relates to the production of compounds of the formula (Id).
- a method for producing the compound of the formula (Id) comprising: Step 1D: providing a compound 4d 4d; Step 2D: performing coupling reaction of the compound 4d with a compound 5 to obtain a compound Step 3D: deprotecting an amino protecting group PG3 to obtain a compound 7d
- Step 4D performing coupling reaction of the compound 7d with a carboxylic acid (R2-CO 2 H 8) to produce the compound of the formula (Id) wherein L, R2 , R3, R6, R7 have the same meanings as defined above in formula (Id), and PG3 is an amino protecting group.
- Step 1D ⁇ is carried out before the step 1D: (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with a phosphonate 2d to obtain an intermediate compound 3d; (c) deprotecting the protecting groups PG1 and PG2 of the compound 3d preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4d .
- Step 1D ⁇ : (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with a phosphonate 2d to obtain an intermediate compound 3d; (c) deprotecting the compound 3d preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4d; Step 1D: providing a compound 4d Step 2D: performing coupling reaction of the compound 4d with a compound 5 to obtain a compound Step 3D: deprotecting an amino protecting group PG3 to obtain a compound 7d 7d; Step 4D: performing coupling reaction of the compound 7d with a carboxylic acid (R2-CO 2 H 8) to produce the compound of the formula (Id) (Id) ; wherein L, R2 , R3, R6, R7 have the same meanings as defined above in formula (Id), and PG3 is an amino protecting group.
- a further aspect of the present invention relates to the production of compounds of the formula (Ie).
- a method for producing the compound of the formula (Ie) comprising: Step 1E: providing a compound Step 2E: performing coupling reaction of the compound 4e with a compound 5 to obtain a compound Step 3E: deprotecting an amino protecting group PG3 to obtain a compound 7e
- Step 4E performing coupling reaction of the compound 7e with a carboxylic acid (R2-CO 2 H 8) to produce the compound of the formula (Ie) wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ie), and PG3 is an amino protecting group.
- Step 1E ⁇ is carried out before the step 1E: (a) providing a protected aldehyde (b) performing a coupling reaction of the aldehyde 1 with a sulfonylmethyl phosphonate 2e to obtain an intermediate compound 3e; (c) deprotecting the protecting groups PG1 and PG2 of the compound 3e preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4e .
- Step 1E (a) providing a protected aldehyde 1 (b) performing a coupling reaction of the aldehyde 1 with a sulfonylmethyl phosphonate 2e to obtain an intermediate compound 3e; (c) deprotecting the protecting groups PG1 and PG2 of the compound 3e preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4e
- Step 1E providing a compound Step 2E: performing coupling reaction of the compound 4e with a compound 5 to obtain a compound Step 3E: deprotecting an amino protecting group PG3 to obtain a compound 7e
- Step 4E performing coupling reaction of the compound 7e with a carboxylic acid (R2-CO 2 H 8) to produce the compound of the formula (Ie) wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ie), and PG3 is an amino protecting group.
- protecting groups PG1 and PG2 are simultaneously removed and the protecting group PG3 is selectively introduced.
- PG1 and PG3 are same.
- protecting groups refers to commonly used protection groups in organic synthesis, preferably for amino and carboxyl groups.
- PG1 , PG3, and PG5 preferably are suitable protecting groups for amino groups.
- PG2 and PG4 preferably are suitable protecting groups for carboxyl groups.
- PG1 , PG3, and PG5 may be selected from the group consisting of or comprising: acetyl, benzoyl, benzyloxycarbonyl (Cbz), tert-butylcarbonyl, tert-butyloxycarbonyl (Boc), and fluorenylmethylenoxy group (Fmoc).
- PG2 and PG4 may be selected from the group consisting of or comprising: methoxy, ethoxy, isobutoxy, tert-butoxy, benzyloxy; preferably, tert-butoxy group.
- activating reagents are commonly used to activating carboxylic acid reminderPeptide Coupling Reagents, More than a Letter Soup”, Ayman El-Faham and Fernando Albericio, Chemical Reviews, 2011, 111(11), p.6557- 6602).
- the activation may be introduced separate reaction or in situ reaction.
- any of the following coupling reagent can be used to activate carobxylic acid group: BOP (Benzotriazole-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate), PyBOP (Benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate), AOP (7-(Azabenzotriazol-1-yl)oxy tris(dimethylamino)phosphonium hexafluorophosphate), PyAOP ((7-Azabenzotriazol-1- yloxy)tripyrrolidinophosphonium hexafluorophosphate), TBTU (2-(1H-Benzotriazole-1- yl)-1,1,3,3-tetramethylaminium tetrafluoroborate), EEDQ (N-Ethoxycarbonyl-2-ethoxy- 1,2-dihydroquinoline), Poly
- composition & Medical Use therefore another aspect of the present invention relates to compounds according to the general formula (I) as medicine as well as their use in medicine. Especially preferred is the use as inhibitors of transglutaminases, in particular transglutaminsase 2 (TG2).
- TG2 transglutaminsase 2
- the compounds of formula (I) described herein or according to the present invention may be administered themselves or in form of a pharmacologically acceptalbe salt.
- the compounds of the present invention may form of a pharmacologically acceptalbe salt with organic or inorganic acids or bases.
- acids for such acid addition salt formation are hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, acetic acid, citric acid, oxalic acid, malonic acid, salicylic acid, p-aminosalicylic acid, malic acid, fumaric acid, succinic acid, ascorbic acid, maleic acid, sulfonic acid, phosphonic acid, perchloric acid, nitric acid, formic acid, propionic acid, gluconic acid, lactic acid, tartaric acid, hydroxymaleic acid, pyruvic acid, phenylacetic acid, benzoic acid, p-aminobenzoic acid, p-hydroxybenzoic acid, methanesulfonic acid, ethanesulfonic acid, nitrous acid, hydroxyethanesulfonic acid, ethylenesulfonic acid, p- toluenesulfonic acid, naphthylsulfonic acid, sulfanilic
- the salts are prepared by contacting the free base form with a sufficient amount of the desired acid to produce a salt in the conventional manner.
- Preferred is the mesylate salt, hydrochloride salt and the trifluoroacetate salt and especially preferred is the trifluoroacetate salt and the hydrochloride salt.
- salts could also be formed with inorganic or organic bases. Examples for suitable inorganic or organic bases are, for example, NaOH, KOH, NH 4 OH, tetraalkylammonium hydroxide, lysine or arginine and the like.
- Salts may be prepared in a conventional manner using methods well known in the art, for example by treatment of a solution of the compound of the general formula (I) with a solution of an acid, selected out of the group mentioned above.
- Methods of Use in a further aspect of the present invention, the novel compounds according to the general formula (I) are used as pharmaceutically active agent, i.e. the compound of the formula (I) is used in medicine.
- the present invention relates to a pharmaceutical composition comprising at least one compound according to the general formula (I), as an active ingredient or a pharmacologically acceptable salts thereof as an active ingredient, together with at least one pharmacologically acceptable carrier, excipient and/or diluent.
- the compounds according to general formula (I) described herein are especially suitable for the treatment and prophylaxis of diseases associated with and/or caused by transglutaminase 2.
- Celiac disease a gluten intolerance is associated with tissue transglutaminase (TG 2).
- tissue transglutaminase TG 2
- Another very important group of indications for tissue transglutaminase inhibitors are fibrotic disorders. Fibrotic disorders are characterized by the accumulation of cross- linked extracellular matrix proteins. Diabetic nephropathy, cystic fibrosis, idiopathic pulmonary fibrosis, kidney fibrosis as well as liver fibrosis belong to the most important fibrotic disorders to be addressed with the compounds disclosed.
- inventive compounds as reversible and irreversible TG inhibitors effectively inhibit the activity of TGs, especially TG2.
- the term “inhibiting” or “inhibition” refers to the ability of a compound to downregulate, decrease, reduce, suppress, inactivate, or inhibit at least partially the activity of an enzyme, or the expression of an enzyme or protein. Therefore, another aspect of the present invention is the use of the inventive compounds of the general formula (I), or the pharmaceutical composition thereof as descirbed in the treatment or prophylaxis of autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders.
- Further aspects of the present invention relate to the use of the compounds of general formula (I) for the preparation of a pharmaceutical composition useful for prophylaxis and/or treatment of autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders.
- a method for preventing and/or treating autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders comprises administering to a subject, in particular a human, a pharmaceutically effective amount of at least one compound of the general formula (I), to prevent and/or treat said autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders.
- the autoimmune and inflammatory diseases comprises multiple sclerosis, celiac disease, Duhring-Brocq-disease (dermatitis herpetiformis), gluten ataxia, gluten neuropathy, diabetes, rheumatoid arthritis, Graves' disease, inflammatory bowel disease, systemic lupus erythematosus psoriasis, and gingivitis;
- the vascular diseases comprise atherosclerosis, thrombosis, vascular stiffness;
- the compound of the formula (I), or the pharmaceutical composition thereof is useful in the treatment or prophylaxis of celiac disease.
- the compounds of the general formula (I) can be administered in form of their pharmaceutically active salts, optionally using essentially non-toxic pharmaceutically acceptable carriers, adjuvants or extenders.
- Medications are prepared in a known manner in a conventional solid or fluid carrier or in extenders and a conventional pharmaceutically acceptable adjuvant/expedient in a suitable dose.
- the preferred preparations are provided in an administrable form suitable for oral application, such as pills, tablets, film tablets, coated tablets, capsules and powders. Tablets, film tablets, coated tablets, gelatin capsules and opaque capsules are the preferred pharmaceutical formulations.
- any pharmaceutical compositions contains at least one compound of the general formula (I), and/or pharmaceutically acceptable salts thereof in an amount of 5 mg to 500 mg, preferably 10 mg to 250 mg and most preferred in an amount of 10 to 100 mg per formulation.
- the object of the present invention also includes pharmaceutical preparations for oral, parenteral, dermal, intradermal, intragastric, intracutaneous, intravascular, intravenous, intramuscular, intraperitoneal, intranasal, intravaginal, intrabuccal, percutaneous, rectal, subcutaneous, sublingual, topic, transdermal or inhalative application, containing, in addition to typical vehicles and extenders, a compound of the general formula (I), and/or a pharmaceutically acceptable salt thereof as active component.
- compositions of the present invention contain one of the compounds of the formula (I) disclosed herein as active component, typically mixed with suitable carrier materials, selected with respect to the intended form of administration, i.e. tablets to be administered orally, capsules (filled either with a solid, a semi-solid or a liquid), powders, orally administrable gels, elixirs, dispersible granulates, syrups, suspensions and the like in accordance with conventional pharmaceutical practices.
- suitable carrier materials selected with respect to the intended form of administration, i.e. tablets to be administered orally, capsules (filled either with a solid, a semi-solid or a liquid), powders, orally administrable gels, elixirs, dispersible granulates, syrups, suspensions and the like in accordance with conventional pharmaceutical practices.
- the compound of the formula (I) can as active agent component be combined with any oral, non-toxic, pharmaceutically acceptable, inert carrier, such as lactose, starch, sucrose, cellulose, magnesium stearate, dicalcium phosphate, calcium sulfate, talc, mannitol, ethyl alcohol (liquid forms) and the like for the oral administration in form of tablets or capsules.
- suitable binders, lubricants, disintegrants and colorants can be added to the mixture if required.
- Powders and tablets can consist of said inert carriers to an extent from about 5% per weight to about 95% per weight of the inventive composition.
- Suitable binders include starch, gelatin, natural sugars, sweeteners made of corn, natural and synthetic gums, such as acacia gum, sodium alginate, carboxymethylcellulose, polyethylene glycol and waxes.
- Possible lubricants for the use in said dosage forms include boric acid, sodium benzoate, sodium acetate, sodium chloride and the like.
- Disintegrants include starch, methylcellulose, cyclodextrins, guar gum and the like. If required, sweeteners and flavor additives and preservatives can also be included.
- compositions of the present invention can be formulated in a form with sustained release to provide a controlled release rate of any one or more components or active components, in order to optimize the therapeutic effect, i.e. the inhibitory activity and the like.
- Suitable dosage forms for sustained release include layered tablets containing layers with varying degradation rates or controlled release polymeric matrices impregnated with the active components and in the form of a tablet or capsule containing such impregnated or encapsulated porous polymeric matrices.
- Preparations in fluid form include solutions, suspensions and emulsions. Exemplarily mentioned are water or water propylene glycol solutions for parenteral injections or the addition of sweeteners and opacifiers for oral solutions, suspensions and emulsions.
- Aerosol preparations suitable for inhalation may include solutions and solids in the form of powders which can be combined with a pharmaceutically acceptable carrier, such as a compressed inert gas, e.g. nitrogen.
- a pharmaceutically acceptable carrier such as a compressed inert gas, e.g. nitrogen.
- a low melting wax such as a mixture of fatty acid glycerides, e.g. cocoa butter
- the active component is homogenously dispersed therein by stirring or similar mixing operations.
- the melted homogenous mixture is then poured in fitting forms, cooled and thus hardened.
- Further preparations in solid form which are to be converted into preparations in fluid form for either oral or parenteral administration shortly before use are included.
- Such fluid forms include solutions, suspensions and emulsions.
- the transdermal compositions can have the form of crèmes, lotions, aerosols and/or emulsions.
- the term capsule refers to a special container or casing composed of methylcellulose, polyvinyl alcohols or denatured gelatins or starches, in which the active agents can be enclosed.
- hard shell capsules are prepared from mixtures of bones and porcine skin gelatins having comparatively high gel strength.
- the capsule itself can contain small amounts of colorants, opacifiers, softening agents and preservatives.
- Tablet means a compressed or cast solid dosage form containing the active components with suitable extenders.
- the tablet can be produced by compressing mixtures or granulates obtained by wet granulation, dry granulation or compaction, which are known to the one skilled in the art.
- Oral gels refer to the active components dispersed or solubilized in a hydrophilic semi- solid matrix.
- Powders for compositions refer to powder mixtures containing the active components and suitable extenders which can be suspended in water or juices. Suitable extenders are substances which usually form the largest part of the composition or dosage form. Suitable extenders include sugars such as lactose, sucrose, mannitol and sorbitol; starches derived from wheat, corn, rice and potatoes; and celluloses such as microcrystalline cellulose.
- the amount of extenders in the composition can range from about 5 to about 95% per weight of the total composition, preferably form about 25 to about 75% per weight and further preferred from about 30 to about 60% per weight.
- disintegrants refers to materials added to the composition in order to support disintegration and release of the medicinal substance.
- Suitable disintegrants include starches, modified starches which are soluble in cold water, such as sodium carboxymethyl starch; natural and synthetic gums such as locust bean gum, caraya, guar gum, tragacanth and agar; cellulose derivatives such as methylcellulose and sodium carboxymethylcellulose, microcrystalline celluloses and crosslinked microcrystalline celluloses such as croscarmellose sodium; alginates such as alginic acid and sodium alginate; clays such as bentonites and foaming mixtures.
- the amount of disintegrants used in the composition can range from about 2 to 20% per weight of the composition and further preferred from about 5 to about 10% per weight.
- Binders characterize substances binding or "gluing" powders to each other and they consequently serve as “glue” in the formulation. Binders add a cohesion starch which is already available in the extenders or the disintegrant. Suitable binders include sugar, such as sucrose; starches derived from wheat, corn, rice and potatoes; natural gums such as acacia gum, gelatin and tragacanth; derivatives of sea weed such as alginic acid, sodium alginate and ammonium calcium alginate, cellulose materials such as methyl cellulose and sodium carboxymethylcellulose and hydroxypropyl methylcellulose, polyvinylpyrrolidone and inorganic compounds, such as magnesium aluminum silicate.
- sugar such as sucrose
- starches derived from wheat, corn, rice and potatoes natural gums such as acacia gum, gelatin and tragacanth
- derivatives of sea weed such as alginic acid, sodium alginate and ammonium calcium alginate
- cellulose materials such as methyl
- the amount of binders in the composition can range from about 2 to about 20% per weight of the total composition, preferably form about 3 to about 10% per weight and further preferred from about 3 to about 6% per weight.
- lubricant refers to a substance added to the dosage form in order to allow for the tablet, granulate, etc. to be released from the casting mold or pressing mold, after compression, by reducing the friction. Suitable lubricants include metallic stearates such as magnesium stearate, calcium stearate or potassium stearate; stearic acid; waxes with high melting points and water soluble lubricants such as sodium chloride, sodium benzoate, sodium acetate, sodium oleate, polyethylene glycols and D,L-leucine.
- lubricants Due to the fact that lubricants have to be present on the surface of the granulates as well as between the granulates and parts of the tablet press they are typically added during the last step prior to compression.
- the amount of lubricants in the composition can range from about 0.2 to about 5% per weight of the total composition, preferably form about 0.5 to about 2% per weight and further preferred from about 0.3 to about 1.5 % per weight.
- Lubricants are materials preventing caking and improving the flow characteristics of granulates so that the flow is smooth and uniform.
- Suitable lubricants include silicon dioxide and talc.
- the amount of lubricants in the composition can range from about 0.1 to about 5 % per weight of the total composition, preferably form about 0.5 to about 2 % per weight.
- Colorants are adjuvants coloring the composition or dosage form.
- Such adjuvants can include colorants having food quality which are adsorbed on a suitable adsorption means, such as clay or aluminum oxide.
- the amount of the colorant used can vary from about 0.1 to about 5% per weight of the composition and preferably from about 0.1 to about 1% per weight.
- a “pharmaceutically effective amount” of a transglutaminase inhibitor is the amount or activity effective for achieving the desired physiological result, either in cells treated in vitro or in a patient treated in vivo.
- a pharmaceutical effective amount is such an amount which is sufficient for inhibiting, for a certain period of time, one or more of the clinically defined pathological processes associated with transglutaminase 2.
- the effective amount can vary according to the specific compound of the formula (I) and additionally depends on a plurality of factors and conditions related to the subject to be treated and the severity of the disease. If, for example, an inhibitor is to be administered in vivo, factors such as age, weight and health of the patients as well as dose reaction curves and data regarding toxicity obtained from preclinical animal studies are amongst the data to be considered. If the inhibitor in form of the compound of the formula (I) described herein is to be brought in contact with the cells in vivo, a plurality of preclinical in vitro studies would be designed in order to determine parameters such as absorption, half-life, dose, toxicity, etc.
- Boc tert-butoxycarbonyl
- BocOSu N-tert-butoxycarbonyloxy-succinimide
- DCM diichloromethane
- DMAP 4-(Dimethylamino)-pyridine
- TEA triethylamine
- DMF dimethylformamide
- DMP Dess-Martin periodiane
- DIPEA N-Ethyldiisopropylamine
- Glu glutamic acid
- EDC (1-ethyl-3-(3 ⁇ -dimethylaminopropyl)carbodiimide
- TFA trifluoroacetic acid
- THF tetrahydrofuran
- EtOAc ethyl acetate
- HATU 1- [Bis(dimethylamino)methylene]-1H-1,2,3-
- Example I Synthetic method I Scheme. I-1 Preparation of compound 30.0 g (214 mmol) of 2-hydroxy-3-nitropyridine and 40.5 g (2 eq) of chloroacetic acid were suspended in 600 mL water. At 40°C, 245 g (3 eq) trisodium phosphate dodecahydrate were added, and the reaction was stirred at room temperature overnight. 250 mL HCl (32%) were added, and the suspension was stirred for another night at 4°C. The precipitate was filtered and dried.
- Example B-1 Inhibitory effect of the compounds according to the invention Transglutaminase assay
- the incorporation of dansylcadaverine into dimethylcasein Zedira product T036, Lorand et al., Anal Biochem, 1971, 44:221-31
- the final concentration of TG2 in the assay is 10 nM.
- a 10 mM inhibitor stock solution is prepared in DMSO, and from this a serial 1:2-fold dilution series is prepared also in DMSO.
- 15 ⁇ l of inhibitor working dilution are added per well of a 96 well microtiter plate.
- 15 ⁇ l of a 2% (v/v) DMSO solution prepared using the buffer mentioned above are added per well.
- a slope of the increase in fluorescence between 20 and 30 min is calculated for determination of the IC 50 value (inhibitor concentration at which 50% of the initial activity is blocked). Analysis of enzymatic activity is performed by calculation of the slope of an increase in fluorescence intensity. IC 50 values are calculated by plotting the enzymatic activity (as percentage from control containing 2% DMSO instead of inhibitor) against the inhibitor concentration. IC 50 is defined as the inhibitor concentration blocking 50 % of initial enzyme activity.
- the inhibitory activity of the inventive compounds in regard to tissue transglutaminase (TG2) is shown in the following tables 1, 2 and 3 using IC 50 -values. Table 1.
- efficacy of reversible TG2 inhibitors A: IC 50 ⁇ 150 nM, B: 150 nM ⁇ IC 50 ⁇ 600 nM, C: IC 50 ⁇ 600 nM Table 2.
- efficacy of reversible TG2 inhibitors A: IC 50 ⁇ 40 nM, B: 40 nM ⁇ IC 50 ⁇ 400 nM, C: IC 50 ⁇ 400 nM
Abstract
The invention relates to the compound of general formula (I) as novel inhibitors of transglutaminases, to methods for producing the inventive compounds, to pharmaceutical compositions containing said inventive compounds and to their use for the prophylaxis and treatment of diseases associated with transglutaminases, in particular transglutaminase (2).
Description
Inhibitors of Transglutaminases Description The invention relates to novel inhibitors of transglutaminases, in particular transglutaminase 2, methods for their synthesis and to their use for the prophylaxis and treatment of diseases associated with transglutaminases, in particular transglutaminase 2. Background of the invention Transglutaminases are part of the class of transferases and according to EC nomenclature they are correctly designated as “protein-glutamine: amine ^-glutamyl transferases” (EC 2.3.2.13). They link the ^-amino group of the amino acid lysine and the ^-glutamyl group of the amino acid glutamine forming an isopeptide bond while ammonia is released. In the absence of suitable amines and/or under certain conditions, deamidation of the glutamine may occur resulting in the corresponding glutamic acid. Additionally, transglutaminases play an important role in many therapeutic areas such as the cardiovascular diseases (thrombosis and atherosclerosis), autoimmune diseases (celiac disease, Duhring-Brocq-disease, gluten ataxia), neurodegenerative diseases (Alzheimer’s disease, Parkinson’s disease, Huntington’s disease), dermatological diseases (ichthyosis, psoriasis, acne) as well as in wound healing and inflammatory diseases (e.g. tissue fibrosis) (J.M. Wodzinska, Mini-Reviews in medical chemistry, 2005, 5, 279 - 292). Celiac disease, a gluten intolerance, however, is one of the most important indications. Celiac disease is characterized by a chronic inflammation of the mucosa of the small intestine. In susceptible patients, the intestinal epithelium is successively destroyed after ingestion of gluten-containing food resulting in reduced absorption of nutrients which again has massive impact on the patients affected and is for example associated with symptoms such as loss of weight, anemia, diarrhea, nausea, vomiting, loss of appetite and fatigue. Due to these findings, there is a large demand for the development of a medicament for the treatment of celiac disease as well as of other diseases associated with tissue transglutaminase (transglutaminase 2, TG2, tTG). The tissue transglutaminase is a central element during pathogenesis. The endogenous enzyme catalyses the deamidation of gluten/gliadin in the small intestinal mucosa and thus triggers the inflammatory response. Therefore inhibitors of tissue transglutaminase are suitable to be used as active agents for medication.
Another very important group of indications for tissue transglutaminase inhibitors are fibrotic disorders. Fibrotic disorders are characterized by the accumulation of cross- linked extracellular matrix proteins. Diabetic nephropathy, cystic fibrosis, idiopathic pulmonary fibrosis, kidney fibrosis as well as liver fibrosis belong to the most important fibrotic disorders to be addressed with the compounds disclosed. The objective of the present invention is to provide novel, most probably reversible or irreversible inhibitors of transglutaminases, in particular transglutaminase 2 and methods for the synthesis of said inhibitors as well as several uses of these inhibitors. Said objective is solved by the technical teachings of the independent claims. Further advantageous embodiments, aspects and details of the invention are evident from the dependent claims, the description and the examples. Surprisingly, it has been found that reversible/irreversible inhibitors having a chemical warhead as disclosed herein inhibit effectively transglutaminases including tissue transglutaminase called transglutaminase 2 or TG2. Herein these terms are used synonymous. Preferably, such chemical warhead moiety is particularly selected from reversible warheads such as α-ketoaldehydes, α-ketoketones, α-ketoacids, α-ketoesters, α- ketoamides as well as irreversible warheads such as α,ß-unsatureated-ketoester, α,ß- unsatureated ketoamide and α,ß-unsatureated-sulfone. The compounds of the present invention act as selective inhibitors of transglutaminase 2. Thus, the present invention relates to compounds of the general formula (I):
wherein L represents –L1– or
L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–, R1 represents
R2 represents
,
,
wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, –NHSO2CH2CF3; R4 represents –R5, –OR5 or –NR6R7;
R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH2CH2CH2CH3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo-C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, or –CH2CH2OCH2CH3; R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2, or –NR6R7 represents , , , Or ; R8, R9, R10, R11 , R12 , R13, and R14 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo-C3H5, –CHO, –COCH3, –COCF3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOH, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –OOC–CH3, –OOC–CF3, –OOC–C2H5, –OOC–C3H7, –OOC–CH(CH3)2, –OOC–C(CH3)3, –NH2, –NHCH3, –NHC2H5, –NHC3H7, –NHCH(CH3)2, –NHC(CH3)3, –N(CH3)2, –N(C2H5)2, –N(C3H7)2, –N[CH(CH3)2]2, –N[C(CH3)3]2, –NHCOCH3, –NHCOCF3, –NHCOC2H5, –NHCOC3H7, –NHCOCH(CH3)2, –NHCOC(CH3)3, –CONH2, –CONHCH3, –CONHC2H5, –CONHC3H7, –CONHCH(CH3)2, –CONH ^cyclo-C3H5, –CONHC(CH3)3, –CON(CH3)2, –CON(C2H5)2, –CON(C3H7)2, –CON[CH(CH3)2]2, –CON[C(CH3)3]2, –SO2NH2, –SO2NHCH3, –SO2NHC2H5, –SO2NHC3H7, –SO2NHCH(CH3)2, –SO2NH ^cyclo-C3H5, –SO2NHC(CH3)3, –SO2N(CH3)2, –SO2N(C2H5)2, –SO2N(C3H7)2, –SO2N[CH(CH3)2]2, –SO2N[C(CH3)3]2, –NHSO2CH3, –NHSO2CF3, –NHSO2C2H5, –NHSO2C3H7, –NHSO2CH(CH3)2,
–NHSO2C(CH3)3, ^CH=CH2, ^CH2 ^CH=CH2, ^C(CH3)=CH2, ^CH=CH ^CH3, ^C≡CH, ^C≡C ^CH3, ^CH2-C≡CH, ^Ph, ^O ^Ph, ^O ^CH2-Ph, , , , , , , , N N , , , , , or ; or R8 and R9 or R9 and R10 can form together one of the following five- membered or six-membered rings: , , , , , , , , N , , , , or ; or R12 and R13 or R13 and R14 can form together one of the following five- membered or six-membered rings; , , , , , , , , or ; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, –SO2 ^cyclo ^C3H5, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3; or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof.
The residues bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, and hexamethylenetetraminyl used herein, have the following parent structures respectively:
and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re. Preferred are the compounds of any one of the formulae (Ia), (Ib) and (Ic):
and L, R2 , R3, R5, R6, R7 have the same meanings as defined in the formula (I) In some embodiments, the present invention relates to the comopund of the formula (I)
wherein L represents –L1–L2– ; L1 represents –CH2CO–, L2 represents –NRN1–, and R3 represents 1-adamantyl; or L2 represents –NRN1CH 3 2–, and R represents 2-bicyclo[3.3.1]heptyl, and the afore-mentioned 1-adamantly and 2-bicyclo[3.1.1]heptyl residues are optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, R1 represents
R2 represents
R6 represents ^C2H5; and R8, R10, R11 , Ra, Rb, Rc, Rd, Re , RN and RN1 have the same meanings as defined in formula (I). In some embodiments, the present invention relates to the compound of the formula (Ia):
wherein L represents –L1–L2– ; L1 represents –CH2CO–, L2 represents –NRN1–, and R3 represents 1-adamantyl; or L2 represents –NRN1CH –, and 3 2 R represents 2-bicyclo[3.3.1]heptyl, and the afore-mentioned 1-adamantly and 2-bicyclo[3.1.1]heptyl residues are optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; R2 represents
R6 represents ^C2H5; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, –NHSO2CH2CF3; R8, R10, and R11 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo-C3H5, –CHO, –COCH3, –COCF3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOH, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –OOC–CH3, –OOC–CF3, –OOC–C2H5, –OOC–C3H7,
–OOC–CH(CH3)2, –OOC–C(CH3)3, –NH2, –NHCH3, –NHC2H5, –NHC3H7, –NHCH(CH3)2, –NHC(CH3)3, –N(CH3)2, –N(C2H5)2, –N(C3H7)2, –N[CH(CH3)2]2, –N[C(CH3)3]2, –NHCOCH3, –NHCOCF3, –NHCOC2H5, –NHCOC3H7, –NHCOCH(CH3)2, –NHCOC(CH3)3, –CONH2, –CONHCH3, –CONHC2H5, –CONHC3H7, –CONHCH(CH3)2, –CONH ^cyclo-C3H5, –CONHC(CH3)3, –CON(CH3)2, –CON(C2H5)2, –CON(C3H7)2, –CON[CH(CH3)2]2, –CON[C(CH3)3]2, –SO2NH2, –SO2NHCH3, –SO2NHC2H5, –SO2NHC3H7, –SO2NHCH(CH3)2, –SO2NH ^cyclo-C3H5, –SO2NHC(CH3)3, –SO2N(CH3)2, –SO2N(C2H5)2, –SO2N(C3H7)2, –SO2N[CH(CH3)2]2, –SO2N[C(CH3)3]2, –NHSO2CH3, –NHSO2CF3, –NHSO2C2H5, –NHSO2C3H7, –NHSO2CH(CH3)2, –NHSO2C(CH3)3, ^CH=CH2, ^CH2 ^CH=CH2, ^C(CH3)=CH2, ^CH=CH ^CH3, ^C≡CH, ^C≡C ^CH3, ^CH2-C≡CH, ^Ph, ^O ^Ph, ^O ^CH2-Ph, , , , , , , , N N , , , , , or ; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, –SO2 ^cyclo ^C3H5, or –SO2C(CH3)3; RN1 represents –H, ^CH3, or ^C2H5; or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof. Preferalby, the compound of the invention has the formula (II):
(II) wherein L2 represents –NRN1–, and R3 represents 1-adamantyl; or L2 represents –NRN1CH 3 2–, and R represents 2-bicyclo[3.3.1]heptyl, and the afore-mentioned adamantly and bicyclo[3.1.1]heptyl residues are optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; R2 represents RN R11 N 10 N R , , ; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, –NHSO2CH2CF3; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3;
R8, R10, and R11 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo-C3H5, ^CH=CH2, ^CH2 ^CH=CH2, ^C(CH3)=CH2, ^CH=CH ^CH3, ^C≡CH, ^C≡C ^CH3, ^CH2-C≡CH, ^Ph, or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof. The term “1-adamantyl” and “2-bicyclo[3.1.1]heptyl” have the following structures respectively:
and Ra, Rb, Rc, Rd and Re have the same meanings as defined herein. Preferred, 2-bicyclo[3.1.1]heptyl have the following structure: , or , and Ra and Rb, have the same meanings as defined herein. More preferred, the compound has any one of the formula (II-a), (II-b), (II-b1) – (II-b2), and (III-a) – (III-b ):
wherein R2 , RN , Ra, Rb, Rc, Rd and Re have the same meanings as defined herein, preferred in the formula (Ia) , more preferred in the formula (II). In a preferred embodmiment, the invention refers to the compound of the formula (I), (Ia) and (II), wherein R3 represents
In a preferred embodmiment, the invention refers to the compound of the formula (I), (Ia) and (II), wherein R2 represents
Most preferred are the following compounds of formula (I):
In another aspect of the present invention, the present invention refers to the compound of the formula (I)
,
wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl, and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and when R3 is 2-bicyclo[3.1.1]heptyl, L is not –CH N1 3 2CONR CH2–, and when R is 1-adamantyl, then L is not –CH N1 2CONR –; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, –NHSO2CH2CF3; R4 represents –NR6R7; R6 and R7 represent independently of each other –H, –CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2, or –NR6R7 represents , , , or ; R8 – R14 have the meanings and preferred meanings as disclosed herein; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5,
–COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3; or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof. Also preferred are the compounds of the formula (Ib):
wherein L represents –L1– or –L1-L2–; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–;
,
R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl, and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and when R3 is 2-bicyclo[3.1.1]heptyl, L is not –CH N1 3 2CONR CH2–, and when R is 1-adamantyl, then L is not –CH N1 2CONR –; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, –NHSO2CH2CF3; R4 represents –NR6R7; R6 and R7 represent independently of each other –H, –CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3,
–CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2, or –NR6R7 represents , , , or ; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3; and R8 – R14 have the meanings as defined in formula (I); or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof. Preferably, -NR6R7 of the formula (Ib) represents –NH2, –NHCH3, –N(CH3)2, –NHCH(CH3)2, –NHCH2CH2CH3, –NH–CH2CH=CH2, –NHCH2CH2CH2CH3, –NHCH2CH(CH3)2, –NHC(CH3)3, –NHCH2CH2CH2CH2CH3, –NH–cyclo-C3H5, –NH–cyclo-C4H7, –NH–cyclo-C5H9, –NH–cyclo-C6H11, –NHCH2–cyclo-C3H5, –NHCH2–cyclo-C4H7, –NHCH2–cyclo-C5H9, –NHCH2–cyclo-C6H11, –NHCH2–Ph, –NHCH2OCH3, –NHCH2OCH2CH3, –NHCH2CH2OCH3, –NHCH2CH2NHCH3, –NHCH2CH2N(CH3)2, , , , or . In some embodiments, the present invention relates to the compound of the formula (I), (I) wherein L represents –L1– or –L1-L2–;
L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–;
R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl, and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and when R3 is 2-bicyclo[3.1.1]heptyl, L is not –CH N1 3 2CONR CH2–, and when R is 1-adamantyl, then L is not –CH N1 2CONR –;
R6 represents –H, –CH3, –CH2CH=CH2, –cyclo-C3H5, –CH2CH2CH2CH2CH3 ; and R8 – R14 , Ra, Rb, Rc, Rd, Re, RN , and RN1 have the meanings and preferred meanings as defined herein. Also preferred are compounds of the formula (I) or (Ib), wherein L1 represents –CH2–, or –CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, or –NR CH(CH3)–; R3 represents bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, 4-homoisotwistanyl, adamantly, or diamantyl,and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and and when R3 is 2-bicyclo[3.1.1]heptyl, –L1-L2– is not –CH N1 3 2CONR CH2–, and R is 1-adamantyl then –L1-L2– is not –CH N1 2CONR –; and Ra, Rb, Rc, Rd, Re and RN1 have the same meanings as defined herein. Preferably, R2 of the formula (I) or (Ib) represents
Preferred are compounds having any one of the formulae (IV-a) – (IV-l) and (V-a) – (V-d):
wherein L1 is not –CH2CO–, when the compound has the formula (IV-b), wherein L2 is not –NRN1CH2–, when the compound has the formula (IV-c), and R2 , R3, R6, R8, R9, R10, R11 , R12 , R13, Ra, Rb, Rc, Rd and L2 have the same meanings as defined herein, preferably as defined in formula (I) or (Ib). Also preferred are the compounds of any of the formula (IVa-1),
wherein R6 represents –H, –CH3, –CH2CH3, –CH(CH3)2, –CH2CH2CH3, –CH2CH=CH2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH2CH2CH2CH3, –cyclo-C3H5, or –CH2–cyclo-C3H5. and R2 , Ra, and Rb have the same meanings as defined above, preferred in formula (I), or (Ib); preparably, Ra, and Rb represents independently of each other –H, –F, –Cl, –Br, –OH, –CN, –CH3, –C2H5, or –CO2Me. Preferably, in any of the formula (I), (Ib), (IV-a) – (IV-l), or (IVa-1): R2 represents
R6 represents –H, –CH3, –CH2CH3, –CH(CH3)2, –CH2CH2CH3, –CH2CH=CH2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH2CH2CH2CH3, –cyclo-C3H5, or –CH2–cyclo-C3H5.
Due to the specially selected substituents R2 on the N-terminal side and substituents R3 on the C-terminal side and of the inventive compound according to the invention the steric dimension can be adjusted very precisely, so that a binding pocket of a desired target molecule may be addressed with highly matching measurements. Preferred, are the compound of any of the formulae (I), (Ib), (IV-a) – (IV-l), and (V-a) – (V-d), wherein R3 represents
Suprisingly, it was found that the inventive compounds bound to the transglutaminase 2 reversibly and inhibit the transglutaminase effectively. The electrophilic warheads in combination with the preferred embodiment specifically react with highly nucleophilic thiols in the active site of the transglutaminase 2. Accordingly, it was found that potential unspecific reactions with off-targets are reduced. In one embodiment, the present invention refers to the compound selected from the group consisting of:
or a pharmaceutically acceptable salt thereof. In another aspect of the present invention, the compound of the formula (I) has irreversible warheads such as α,ß-unsatureated-ketoester, α,ß-unsatureated ketoamide and α,ß-unsatureated-sulfone. The compounds of the present invention act selective inhibitors of transglutaminase 2. Thus, in some embodiments the present invention refers to the compounds of the formula (I)
wherein L represents –L1– or –L1–L2– ; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or
wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2,
–CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, or –NHSO2CH2CF3; R4 represents –R5, –OR5 or –NR6R7; R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH2CH2CH2CH3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo-C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, or –CH2CH2OCH2CH3; R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2, or –NR6R7 represents , , , or ; R8, R9, R10, R11 , R12 , R13, and R14 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo-C3H5, –CHO, –COCH3, –COCF3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOH, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –OOC–CH3, –OOC–CF3, –OOC–C2H5, –OOC–C3H7, –OOC–CH(CH3)2, –OOC–C(CH3)3, –NH2, –NHCH3, –NHC2H5, –NHC3H7, –NHCH(CH3)2, –NHC(CH3)3, –N(CH3)2, –N(C2H5)2, –N(C3H7)2, –N[CH(CH3)2]2, –N[C(CH3)3]2, –NHCOCH3, –NHCOCF3, –NHCOC2H5, –NHCOC3H7, –NHCOCH(CH3)2, –NHCOC(CH3)3, –CONH2, –CONHCH3, –CONHC2H5, –CONHC3H7, –CONHCH(CH3)2, –CONH ^cyclo-C3H5, –CONHC(CH3)3, –CON(CH3)2, –CON(C2H5)2, –CON(C3H7)2, –CON[CH(CH3)2]2, –CON[C(CH3)3]2, –SO2NH2,
–SO2NHCH3, –SO2NHC2H5, –SO2NHC3H7, –SO2NHCH(CH3)2, –SO2NH ^cyclo-C3H5, –SO2NHC(CH3)3, –SO2N(CH3)2, –SO2N(C2H5)2, –SO2N(C3H7)2, –SO2N[CH(CH3)2]2, –SO2N[C(CH3)3]2, –NHSO2CH3, –NHSO2CF3, –NHSO2C2H5, –NHSO2C3H7, –NHSO2CH(CH3)2, –NHSO2C(CH3)3, ^CH=CH2, ^CH2 ^CH=CH2, ^C(CH3)=CH2, ^CH=CH ^CH3, ^C≡CH, ^C≡C ^CH3, ^CH2-C≡CH, ^Ph, ^O ^Ph, ^O ^CH2-Ph, , , , , , , , N N , , , , , or ; or R8 and R9 or R9 and R10 can form together one of the following five- membered or six-membered rings: , , , , , , , , N , , , , or ; or R12 and R13 or R13 and R14 can form together one of the following five- membered or six-membered rings; , , , , , , , , or ; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, –SO2 ^cyclo ^C3H5, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3;
or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof. Preferred, are the compounds of the formula (I),
wherein L represents –L1– or –L1–L2–; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–;
, , and L1 , L2 , R2 , R3, R5 – R7 , and RN1 have the meanings as defined above.
L , R2 , R3, and R5 – R7 have the meanings as defined above.
Also preferred are the compounds of the formula (I)
wherein L represents –L1– or –L1–L2–; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–;
,
and L1 , L2 , R5 – R14 , RN and RN1 have the meanings as defined herein. Also preferred are the compounds of any one of the formulae (Ic) – (Ie)
More preferred, are the compound of the formula (I), wherein
L2 represents a bond, –NRN1–, –NRN1CH2–, or –NRN1CH(CH3)–; R3 represents bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, 4- homoisotwistanyl, adamantly, or diamantyl and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and R5, R6, R7 , Ra, Rb, Rc, Rd, Re and RN1 have the same meanings as defined above.
Also preferred, are the compound of any one of the formulae (Ic) – (Ie),
,
R3 represents bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, 4- homoisotwistanyl, adamantly, or diamantyl and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; and R5 – R14 , Ra, Rb, Rc, Rd, Re, RN and RN1 have the same meanings as defined above.
More preferred are compounds of any one the formulae (VI-a) – (Vl-l), (VII-a) – (VII-l), (VIII-a) – (VIIl-l), (IX-a) – (IX-d), (X-a) – (X-d), and (XI-a) – (XI-d):
same meanings as defined above Preferred are the compounds of any one of the formule (I), (Ic) – (Ie), (VI-a) – (Vl-l), (VII-a) – (VII-l), (VIII-a) – (VIIl-l), wherein R2 represents
, , , , R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –cyclo-C3H5, –cyclo-C4H7, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7;
R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3. Preferred, are the compounds of any one of the formule (IX-a) – (IX-d), (X-a) – (X-d), and (XI-a) – (XI-d), wherein R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –cyclo-C3H5, –cyclo-C4H7, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7; and/or R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3. Preferred, are the compound of any of the formulae (I), (Ic) – (Ie), (VI-a) – (Vl-l), (VII-a) – (VII-l), (VIII-a) – (VIIl-l), (IX-a) – (IX-d), (X-a) – (X-d), and (XI-a) – (XI-d), wherein
In very preferred embodiment the present invention refers to the compounds selected from the group consisting of:
or a pharmaceutically acceptable salt thereof. Method for production of inventive compounds In some embodiments, the present invention relates to a method for the synthesis of a compound of formula (I), especially any compound of any one of the formulae (Ia) – (Ie):
As shown in Scheme 1, a method for producing the compound of the formula (Ia) comprising: Step 1A: providing a compound 4a
Step 2A: performing coupling reaction of the compound 4a with a compound 5
to obtain a compound 6a
Step 3A: deprotecting an amino protecting group PG3 to obtain a compound 7a
Step 4A: performing coupling reaction of the compound 7a with a carboxylic acid (R2-CO2H 8) to obtain a compound 9a
Step 5A: performing oxidation reaction of the compound 9a to produce the compound of the formula (Ia)
wherein L, R2 , R3,and R6 have the same meanings as defined above in formula (Ia), and PG3 is an amino protecting group. Scheme 1
Optionally, Step 1A´ is carried out before the step 1A: (a) providing a protected aldehyde
; (b) performing a coupling reaction of the aldehyde 1 with an isocyanide (CN-R6) 2a to obtain an intermediate compound 3a
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3a preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4a
wherein R2 , R6 have the same meanings as defined in formula (Ia), PG1 and PG3 are amino protecting groups, PG2 is a carboxyl protecting group. Therefore, the following method for the production of compounds of the formula (Ia) is preferred: Step 1A´: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with an isocyanide (CN-R6) 2a to obtain an intermediate compound 3a
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3a preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4a
Step 1A: providing a compound 4a
Step 2A: performing coupling reaction of the compound 4a with a compound 5
to obtain a compound 6a
Step 3A: deprotecting the amino protecting group PG3 to obtain a compound 7a
Step 4A: performing coupling reaction of the compound 7a with a carboxylic acid (R2-CO2H 8) to obtain a compound 9a
Step 5A: performing oxidation reaction of the compound 9a to produce the compound of the formula (Ia)
wherein L, R2 , R3,and R6 have the same meanings as defined above in the formula (Ia), and PG1 and PG3 are amino protecting groups, PG2 is a carboxyl protecting group. In a similar manner, the compound of the formula (Ib) can be produced and thus, the present invention relates to a method for producing the compound of formula (Ib) comprising the following steps in the following order: Step 1B: providing a compoun
Step 2B: performing coupling reaction of the compound 4b with a compound 5
to obtain a compound
Step 3B: deprotecting an amino protecting group PG3 to obtain a compound 7b
7b; Step 4B: performing coupling reaction of the compound 7b with a carboxylic acid (R2-CO2H 8) to obtain a compound 9b 9b; Step 5B: performing oxidation reaction of the compound 9b to produce the compound of the formula (Ib) (Ib); wherein L, R2 , R3, R6 and R7 have the same meanings as defined above in the formula (Ib), and PG3 is an amino protecting group. In the step 5A and/or 5B the chemical warhead precursor may be firstly converted to under a basic condition such as treating with K2CO3, and then is converted to the corresponding chemical warhead by an oxidation method, preferably by using Dess-Martin periodinane (DMP), iodoxybenzoic acid (IBX), or hypochlorite/TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) in a polar solvent, as described in the chemical examples. A further aspect of the present invention relates to the production of compounds of the formula (Ic).
As shown in Scheme 2, the method for producing the compound of the formula (Ic): comprises the following steps in the following order: Step 1C: providing a compound 4c
Step 2C: performing coupling reaction of the compound 4c with a compound 5
to obtain a compound
Step 3C: deprotecting an amino protecting group PG3 to obtain a compound 7c
Step 4C: performing coupling reaction of the compound 7c with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ic)
wherein L, R2 , R3, R5 have the same meanings as defined above above in formula (Ic), and PG3 is an amino protecting group.
Scheme 2
Optionally, Step 1C´ is carried out before the step 1C: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with a triphenyl phosphonium ylide 2c to obtain an intermediate compound 3c;
or alternatively (b´) performing a coupling reaction of the aldehyde 1 with a phosphonate 2c´ to obtain an intermediate compound 3c;
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3c and introducing an amino protecting group PG3 to obtain a compound 4c. Therefore, the following method for the production of compounds of the formula (Ic) is preferred: Step 1C´: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with a triphenyl phosphonium ylide 2c to obtain an intermediate compound 3c;
or alternatively (b´) performing a coupling reaction of the aldehyde 1 with a phosphonate 2c´ to obtain an intermediate compound 3c;
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3c preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4c
Step 1C: providing a compound 4c
Step 2C: performing coupling reaction of the compound 4c with a compound 5
to obtain a compound 6c
Step 3C: deprotecting an amino protecting group PG3 to obtain a compound 7c
Step 4C: performing coupling reaction of the compound 7c with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ic)
wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ic), and PG1 and PG3 are amino protecting groups, PG2 is a carboxyl protecting group.
Scheme 3
A further aspect of the present invention relates to the production of compounds of the formula (Id). As shown in Scheme 3, a method for producing the compound of the formula (Id): comprising: Step 1D: providing a compound 4d
4d; Step 2D: performing coupling reaction of the compound 4d with a compound 5
to obtain a compound
Step 3D: deprotecting an amino protecting group PG3 to obtain a compound 7d
Step 4D: performing coupling reaction of the compound 7d with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Id)
wherein L, R2 , R3, R6, R7 have the same meanings as defined above in formula (Id), and PG3 is an amino protecting group.
Optionally, Step 1D´ is carried out before the step 1D: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with a phosphonate 2d to obtain an intermediate compound 3d;
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3d preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4d
. Therefore, the following method for the production of compounds of the formula (Id) is preferred: Step 1D´: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with a phosphonate 2d to obtain an intermediate compound 3d;
(c) deprotecting the
compound 3d preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound
4d; Step 1D: providing a compound 4d
Step 2D: performing coupling reaction of the compound 4d with a compound 5
to obtain a compound
Step 3D: deprotecting an amino protecting group PG3 to obtain a compound 7d
7d; Step 4D: performing coupling reaction of the compound 7d with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Id) (Id) ; wherein L, R2 , R3, R6, R7 have the same meanings as defined above in formula (Id), and PG3 is an amino protecting group. A further aspect of the present invention relates to the production of compounds of the formula (Ie).
As shown in Scheme 4, a method for producing the compound of the formula (Ie): comprising: Step 1E: providing a compound
Step 2E: performing coupling reaction of the compound 4e with a compound 5
to obtain a compound
Step 3E: deprotecting an amino protecting group PG3 to obtain a compound 7e
Step 4E: performing coupling reaction of the compound 7e with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ie)
wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ie), and PG3 is an amino protecting group.
Scheme 4 EA )
Ie Optionally, Step 1E´ is carried out before the step 1E: (a) providing a protected aldehyde
(b) performing a coupling reaction of the aldehyde 1 with a sulfonylmethyl phosphonate 2e to obtain an intermediate compound 3e;
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3e preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4e
. Therefore, the following method for the production of compounds of the formula (Ie) is preferred: Step 1E´: (a) providing a protected aldehyde 1
(b) performing a coupling reaction of the aldehyde 1 with a sulfonylmethyl phosphonate 2e to obtain an intermediate compound 3e;
(c) deprotecting the protecting groups PG1 and PG2 of the compound 3e preferably under acidic condition and introducing an amino protecting group PG3 to obtain a compound 4e
Step 1E: providing a compound
Step 2E: performing coupling reaction of the compound 4e with a compound 5
to obtain a compound
Step 3E: deprotecting an amino protecting group PG3 to obtain a compound 7e
Step 4E: performing coupling reaction of the compound 7e with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ie)
wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ie), and PG3 is an amino protecting group. In an alternative route first all protecting groups PG1 and PG2 are simultaneously removed and the protecting group PG3 is selectively introduced. Prefearbly, PG1 and PG3 are same. The term “protecting groups” as used herein refers to commonly used protection groups in organic synthesis, preferably for amino and carboxyl groups. PG1 , PG3, and PG5 preferably are suitable protecting groups for amino groups. PG2 and PG4 preferably are suitable protecting groups for carboxyl groups. Preferably, PG1 , PG3, and PG5 may be selected from the group consisting of or comprising: acetyl, benzoyl, benzyloxycarbonyl (Cbz), tert-butylcarbonyl, tert-butyloxycarbonyl (Boc), and fluorenylmethylenoxy group (Fmoc). PG2 and PG4 may be selected from the group consisting of or comprising: methoxy, ethoxy, isobutoxy, tert-butoxy, benzyloxy; preferably, tert-butoxy group. In Steps 2A, 2B, 2C, 2D, 2E, 4A, 4B, 4C, 4D, and 4E, to promote the coupling reaction with amino group of intermediate compound, activating reagents are commonly used to activating carboxylic acid („Peptide Coupling Reagents, More than a Letter Soup“, Ayman El-Faham and Fernando Albericio, Chemical Reviews, 2011, 111(11), p.6557- 6602). The activation may be introduced separate reaction or in situ reaction. Preferably, any of the following coupling reagent can be used to activate carobxylic acid group: BOP (Benzotriazole-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate), PyBOP (Benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate), AOP (7-(Azabenzotriazol-1-yl)oxy tris(dimethylamino)phosphonium hexafluorophosphate), PyAOP ((7-Azabenzotriazol-1- yloxy)tripyrrolidinophosphonium hexafluorophosphate), TBTU (2-(1H-Benzotriazole-1- yl)-1,1,3,3-tetramethylaminium tetrafluoroborate), EEDQ (N-Ethoxycarbonyl-2-ethoxy- 1,2-dihydroquinoline), Polyphosphoric Acid (PPA), DPPA (Diphenyl phosphoryl azide), HATU (1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxide hexafluorophosphate), HBTU (O-Benzotriazol-1-yl-N,N,N',N'-tetramethyluronium hexafluorophosphate), HOBt (1-Hydroxybenzotriazole), HOAt (1-Hydroxy-7- azabenzotriazole), DCC (N,N′-Dicyclohexylcarbodiimide), EDC (or EDAC or EDCI, 1-
Ethyl-3-(3-dimethylaminopropyl)carbodiimide), BOP-Cl (Bis(2-oxo-3- oxazolidinyl)phosphinic chloride), TFFH (Tetramethylfluoroformamidinium hexafluorophosphate), BroP (Bromo tris(dimethylamino) phosphonium hexafluorophosphate), PyBroP (Bromo-tris-pyrrolidino-phosphonium hexafluorophosphate) and CIP (2-Chloro-1,3-dimethylimidazolidinium hexafluorophosphate), or further, similar acting reagents, providing an activated intermediate,or a mixture thereof. Pharmaceutical Composition & Medical Use Therefore another aspect of the present invention relates to compounds according to the general formula (I) as medicine as well as their use in medicine. Especially preferred is the use as inhibitors of transglutaminases, in particular transglutaminsase 2 (TG2). Thus the compounds of formula (I) described herein or according to the present invention may be administered themselves or in form of a pharmacologically acceptalbe salt. The compounds of the present invention may form of a pharmacologically acceptalbe salt with organic or inorganic acids or bases. Examples of suitable acids for such acid addition salt formation are hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, acetic acid, citric acid, oxalic acid, malonic acid, salicylic acid, p-aminosalicylic acid, malic acid, fumaric acid, succinic acid, ascorbic acid, maleic acid, sulfonic acid, phosphonic acid, perchloric acid, nitric acid, formic acid, propionic acid, gluconic acid, lactic acid, tartaric acid, hydroxymaleic acid, pyruvic acid, phenylacetic acid, benzoic acid, p-aminobenzoic acid, p-hydroxybenzoic acid, methanesulfonic acid, ethanesulfonic acid, nitrous acid, hydroxyethanesulfonic acid, ethylenesulfonic acid, p- toluenesulfonic acid, naphthylsulfonic acid, sulfanilic acid, camphorsulfonic acid, china acid, mandelic acid, o-methylmandelic acid, hydrogen-benzenesulfonic acid, picric acid, adipic acid, d-o-tolyltartaric acid, tartronic acid, (o, m, p)-toluic acid, naphthylamine sulfonic acid, trifluoroacetic acid, and other mineral or carboxylic acids well known to those skilled in the art. The salts are prepared by contacting the free base form with a sufficient amount of the desired acid to produce a salt in the conventional manner. Preferred is the mesylate salt, hydrochloride salt and the trifluoroacetate salt and especially preferred is the trifluoroacetate salt and the hydrochloride salt. In the case the inventive compounds bear acidic groups, salts could also be formed with inorganic or organic bases. Examples for suitable inorganic or organic bases are, for
example, NaOH, KOH, NH4OH, tetraalkylammonium hydroxide, lysine or arginine and the like. Salts may be prepared in a conventional manner using methods well known in the art, for example by treatment of a solution of the compound of the general formula (I) with a solution of an acid, selected out of the group mentioned above. Methods of Use In a further aspect of the present invention, the novel compounds according to the general formula (I) are used as pharmaceutically active agent, i.e. the compound of the formula (I) is used in medicine. Furthermore, the present invention relates to a pharmaceutical composition comprising at least one compound according to the general formula (I), as an active ingredient or a pharmacologically acceptable salts thereof as an active ingredient, together with at least one pharmacologically acceptable carrier, excipient and/or diluent. The compounds according to general formula (I) described herein are especially suitable for the treatment and prophylaxis of diseases associated with and/or caused by transglutaminase 2. Celiac disease, a gluten intolerance is associated with tissue transglutaminase (TG 2). Another very important group of indications for tissue transglutaminase inhibitors are fibrotic disorders. Fibrotic disorders are characterized by the accumulation of cross- linked extracellular matrix proteins. Diabetic nephropathy, cystic fibrosis, idiopathic pulmonary fibrosis, kidney fibrosis as well as liver fibrosis belong to the most important fibrotic disorders to be addressed with the compounds disclosed. In the biological example B-1, it is proven that the inventive compounds as reversible and irreversible TG inhibitors effectively inhibit the activity of TGs, especially TG2. As used herein the term “inhibiting” or “inhibition” refers to the ability of a compound to downregulate, decrease, reduce, suppress, inactivate, or inhibit at least partially the activity of an enzyme, or the expression of an enzyme or protein. Therefore, another aspect of the present invention is the use of the inventive compounds of the general formula (I), or the pharmaceutical composition thereof as descirbed in the treatment or prophylaxis of autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders.
Further aspects of the present invention relate to the use of the compounds of general formula (I) for the preparation of a pharmaceutical composition useful for prophylaxis and/or treatment of autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders. In a further aspect of the present invention, a method for preventing and/or treating autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders, which method comprises administering to a subject, in particular a human, a pharmaceutically effective amount of at least one compound of the general formula (I), to prevent and/or treat said autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders. Preferred, the autoimmune and inflammatory diseases comprises multiple sclerosis, celiac disease, Duhring-Brocq-disease (dermatitis herpetiformis), gluten ataxia, gluten neuropathy, diabetes, rheumatoid arthritis, Graves' disease, inflammatory bowel disease, systemic lupus erythematosus psoriasis, and gingivitis; the vascular diseases comprise atherosclerosis, thrombosis, vascular stiffness; the fibrotic diseases affecting the lung, the kidney, the liver, the skin or the gut like cystic fibrosis, kidney fibrosis and diabetic nephropathy, intestinal fibrosis, idiopathic lung fibrosis, liver fibrosis; the liver diseases like alcoholic hepatitis, alcoholic steatohepatitis, nonalcoholic steatohepatitis, non-alcoholic fatty liver disease, liver cirrhosis, autoimmune hepatitis or liver inflammation; the cholestatic liver diseases comprise primary biliary cholangitis and primary sclerosing cholangitis; the cancer comprises glioblastoma, melanoma, pancreatic cancer, renal cell carcinoma, meningioma, and breast cancer, the neurodegenerative diseases comprise Parkinson’s disease, Huntington’s disease, or Alzheimer’s disease, the ocular diseases comprise glaucoma, cataracts, macular degeneration, or uveitis; the skin disorders comprise acne, psoriasis, scarring, and skin aging. More preferred, the compound of the formula (I), or the pharmaceutical composition thereof is useful in the treatment or prophylaxis of celiac disease. Furthermore, the compounds of the general formula (I), can be administered in form of their pharmaceutically active salts, optionally using essentially non-toxic pharmaceutically acceptable carriers, adjuvants or extenders. Medications are prepared
in a known manner in a conventional solid or fluid carrier or in extenders and a conventional pharmaceutically acceptable adjuvant/expedient in a suitable dose. The preferred preparations are provided in an administrable form suitable for oral application, such as pills, tablets, film tablets, coated tablets, capsules and powders. Tablets, film tablets, coated tablets, gelatin capsules and opaque capsules are the preferred pharmaceutical formulations. Any pharmaceutical compositions contains at least one compound of the general formula (I), and/or pharmaceutically acceptable salts thereof in an amount of 5 mg to 500 mg, preferably 10 mg to 250 mg and most preferred in an amount of 10 to 100 mg per formulation. Besides, the object of the present invention also includes pharmaceutical preparations for oral, parenteral, dermal, intradermal, intragastric, intracutaneous, intravascular, intravenous, intramuscular, intraperitoneal, intranasal, intravaginal, intrabuccal, percutaneous, rectal, subcutaneous, sublingual, topic, transdermal or inhalative application, containing, in addition to typical vehicles and extenders, a compound of the general formula (I), and/or a pharmaceutically acceptable salt thereof as active component. The pharmaceutical compositions of the present invention contain one of the compounds of the formula (I) disclosed herein as active component, typically mixed with suitable carrier materials, selected with respect to the intended form of administration, i.e. tablets to be administered orally, capsules (filled either with a solid, a semi-solid or a liquid), powders, orally administrable gels, elixirs, dispersible granulates, syrups, suspensions and the like in accordance with conventional pharmaceutical practices. For example, the compound of the formula (I) can as active agent component be combined with any oral, non-toxic, pharmaceutically acceptable, inert carrier, such as lactose, starch, sucrose, cellulose, magnesium stearate, dicalcium phosphate, calcium sulfate, talc, mannitol, ethyl alcohol (liquid forms) and the like for the oral administration in form of tablets or capsules. Moreover, suitable binders, lubricants, disintegrants and colorants can be added to the mixture if required. Powders and tablets can consist of said inert carriers to an extent from about 5% per weight to about 95% per weight of the inventive composition. Suitable binders include starch, gelatin, natural sugars, sweeteners made of corn, natural and synthetic gums, such as acacia gum, sodium alginate, carboxymethylcellulose, polyethylene glycol and waxes. Possible lubricants for the use in said dosage forms include boric acid, sodium benzoate, sodium acetate, sodium chloride and the like. Disintegrants include starch, methylcellulose, cyclodextrins, guar gum and the like. If required, sweeteners and flavor additives and preservatives can
also be included. Some of the terms used above, namely disintegrants, extenders, lubricants, binders and the like are discussed in greater detail below. Additionally, the compositions of the present invention can be formulated in a form with sustained release to provide a controlled release rate of any one or more components or active components, in order to optimize the therapeutic effect, i.e. the inhibitory activity and the like. Suitable dosage forms for sustained release include layered tablets containing layers with varying degradation rates or controlled release polymeric matrices impregnated with the active components and in the form of a tablet or capsule containing such impregnated or encapsulated porous polymeric matrices. Preparations in fluid form include solutions, suspensions and emulsions. Exemplarily mentioned are water or water propylene glycol solutions for parenteral injections or the addition of sweeteners and opacifiers for oral solutions, suspensions and emulsions. Aerosol preparations suitable for inhalation may include solutions and solids in the form of powders which can be combined with a pharmaceutically acceptable carrier, such as a compressed inert gas, e.g. nitrogen. For the preparation of suppositories a low melting wax, such as a mixture of fatty acid glycerides, e.g. cocoa butter, is melted firstly and the active component is homogenously dispersed therein by stirring or similar mixing operations. The melted homogenous mixture is then poured in fitting forms, cooled and thus hardened. Further preparations in solid form which are to be converted into preparations in fluid form for either oral or parenteral administration shortly before use are included. Such fluid forms include solutions, suspensions and emulsions. Furthermore, the compounds of the present invention may be administered via transdermal application. The transdermal compositions can have the form of crèmes, lotions, aerosols and/or emulsions. The term capsule refers to a special container or casing composed of methylcellulose, polyvinyl alcohols or denatured gelatins or starches, in which the active agents can be enclosed. Typically, hard shell capsules are prepared from mixtures of bones and porcine skin gelatins having comparatively high gel strength. The capsule itself can contain small amounts of colorants, opacifiers, softening agents and preservatives. Tablet means a compressed or cast solid dosage form containing the active components with suitable extenders. The tablet can be produced by compressing
mixtures or granulates obtained by wet granulation, dry granulation or compaction, which are known to the one skilled in the art. Oral gels refer to the active components dispersed or solubilized in a hydrophilic semi- solid matrix. Powders for compositions refer to powder mixtures containing the active components and suitable extenders which can be suspended in water or juices. Suitable extenders are substances which usually form the largest part of the composition or dosage form. Suitable extenders include sugars such as lactose, sucrose, mannitol and sorbitol; starches derived from wheat, corn, rice and potatoes; and celluloses such as microcrystalline cellulose. The amount of extenders in the composition can range from about 5 to about 95% per weight of the total composition, preferably form about 25 to about 75% per weight and further preferred from about 30 to about 60% per weight. The term disintegrants refers to materials added to the composition in order to support disintegration and release of the medicinal substance. Suitable disintegrants include starches, modified starches which are soluble in cold water, such as sodium carboxymethyl starch; natural and synthetic gums such as locust bean gum, caraya, guar gum, tragacanth and agar; cellulose derivatives such as methylcellulose and sodium carboxymethylcellulose, microcrystalline celluloses and crosslinked microcrystalline celluloses such as croscarmellose sodium; alginates such as alginic acid and sodium alginate; clays such as bentonites and foaming mixtures. The amount of disintegrants used in the composition can range from about 2 to 20% per weight of the composition and further preferred from about 5 to about 10% per weight. Binders characterize substances binding or "gluing" powders to each other and they consequently serve as "glue" in the formulation. Binders add a cohesion starch which is already available in the extenders or the disintegrant. Suitable binders include sugar, such as sucrose; starches derived from wheat, corn, rice and potatoes; natural gums such as acacia gum, gelatin and tragacanth; derivatives of sea weed such as alginic acid, sodium alginate and ammonium calcium alginate, cellulose materials such as methyl cellulose and sodium carboxymethylcellulose and hydroxypropyl methylcellulose, polyvinylpyrrolidone and inorganic compounds, such as magnesium aluminum silicate. The amount of binders in the composition can range from about 2 to about 20% per weight of the total composition, preferably form about 3 to about 10% per weight and further preferred from about 3 to about 6% per weight.
The term lubricant refers to a substance added to the dosage form in order to allow for the tablet, granulate, etc. to be released from the casting mold or pressing mold, after compression, by reducing the friction. Suitable lubricants include metallic stearates such as magnesium stearate, calcium stearate or potassium stearate; stearic acid; waxes with high melting points and water soluble lubricants such as sodium chloride, sodium benzoate, sodium acetate, sodium oleate, polyethylene glycols and D,L-leucine. Due to the fact that lubricants have to be present on the surface of the granulates as well as between the granulates and parts of the tablet press they are typically added during the last step prior to compression. The amount of lubricants in the composition can range from about 0.2 to about 5% per weight of the total composition, preferably form about 0.5 to about 2% per weight and further preferred from about 0.3 to about 1.5 % per weight. Lubricants are materials preventing caking and improving the flow characteristics of granulates so that the flow is smooth and uniform. Suitable lubricants include silicon dioxide and talc. The amount of lubricants in the composition can range from about 0.1 to about 5 % per weight of the total composition, preferably form about 0.5 to about 2 % per weight. Colorants are adjuvants coloring the composition or dosage form. Such adjuvants can include colorants having food quality which are adsorbed on a suitable adsorption means, such as clay or aluminum oxide. The amount of the colorant used can vary from about 0.1 to about 5% per weight of the composition and preferably from about 0.1 to about 1% per weight. As used herein, a “pharmaceutically effective amount” of a transglutaminase inhibitor is the amount or activity effective for achieving the desired physiological result, either in cells treated in vitro or in a patient treated in vivo. Specifically, a pharmaceutical effective amount is such an amount which is sufficient for inhibiting, for a certain period of time, one or more of the clinically defined pathological processes associated with transglutaminase 2. The effective amount can vary according to the specific compound of the formula (I) and additionally depends on a plurality of factors and conditions related to the subject to be treated and the severity of the disease. If, for example, an inhibitor is to be administered in vivo, factors such as age, weight and health of the patients as well as dose reaction curves and data regarding toxicity obtained from preclinical animal studies are amongst the data to be considered. If the inhibitor in form of the compound of the formula (I) described herein is to be brought in contact with the cells in vivo, a plurality of preclinical in vitro studies would be designed in order to determine parameters such as absorption, half-life, dose, toxicity, etc. Determining a pharmaceutically effective amount for a given pharmaceutically active ingredient is part of the ordinary skills of the one skilled in the art.
Examples Following abbreviations used in the examples have the following meaning. Boc (tert-butoxycarbonyl), BocOSu (N-tert-butoxycarbonyloxy-succinimide) DCM (dichloromethane), DMAP (4-(Dimethylamino)-pyridine), TEA (triethylamine), DMF (dimethylformamide), DMP (Dess-Martin periodiane), DIPEA (N-Ethyldiisopropylamine), Glu (glutamic acid), EDC (1-ethyl-3-(3ʹ-dimethylaminopropyl)carbodiimide), TFA (trifluoroacetic acid), THF (tetrahydrofuran), EtOAc (ethyl acetate), HATU (1- [Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxid hexafluorophosphate), HOBt (hydroxybenzotriazole), MTBE (methyl tert-butyl ether), tBu (tert-butyl), Chemical Examples The following examples are intended to illustrate the invention with selected compounds without limiting the protecting scope of the present intellectual property right on these concrete examples. It is clear for a person skilled in the art that analogous compounds and compounds produced according to analogous synthetic ways fall under the protecting scope of the present intellectual property right. Example I. Synthetic method I Scheme. I-1
Preparation of compound
30.0 g (214 mmol) of 2-hydroxy-3-nitropyridine and 40.5 g (2 eq) of chloroacetic acid were suspended in 600 mL water. At 40°C, 245 g (3 eq) trisodium phosphate dodecahydrate were added, and the reaction was stirred at room temperature overnight. 250 mL HCl (32%) were added, and the suspension was stirred for another night at 4°C. The precipitate was filtered and dried. Yield: 41.2 g, 97%; ESI-MS: 199.3 [M+H]+ Preparation of compound
7.0 g (35.3 mmol) of ZED1657, 6.63 g (1 eq) of 1-adamantanamine hydrochloride and 4.77 g (1 eq) of HOBt were dissolved in 80 mL DMF and 7.38 mL (1.2 eq) DIPEA. 7.45 g (1.1 eq) of 1-ethyl-3-(3ʹ-dimethylaminopropyl)carbodiimide hydrochloride were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in 200 mL DCM. The solution was washed with each 100 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 10.3 g, 88%; ESI-MS: 332.4 [M+H]+ Preparation of compound
10.3 g (31.0 mmol) of ZED3912 were suspended in 200 mL MeOH before 1.0 g of palladium (10%) on activated carbon (unreduced) were added. The suspension was stirred overnight at room temperature under an atmosphere of hydrogen. The catalyst was filtered, and the solvent was evaporated. Yield: 7.51 g, 78% ESI-MS: 302.3 [M+H]+ Scheme. I-2
Preparation of compound
(S)-1-tert-butyl 5-methyl 2-(tert-butoxycarbonylamino)pentanedioate Chemical Formula: C15H27NO6 Exact Mass: 317,18 Molecular Weight: 317,38 12.0 g of Boc-L-Glu-OtBu (39.6 mmol) and 7.09 g of cesium carbonate (21.8 mmol, 0.55 eq) were suspended in 100 ml of DMF and stirred for 1 h at room temperature.2.47 ml iodomethane (39.6 mmol) we added, and the mixture was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.4 g, >100% ESI-MS: 318.3 [M+H]+ Preparation of compound
13.4 g of ZED788 ( ^39,6 mmol) and 986 mg of N,N-dimethyl-4-aminopyridine (DMAP) were dissolved in 30 ml of acetonitrile.17.6 g of di-tert-butyl bicarbonate (77.1 mmol) in 100 ml of acetonitrile was added and the solution was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.7 g, 83% ESI-MS: 418.3 [M+H]+
Preparation of compound
13.7 g of ZED720 (32.8 mmol) were dissolved in 200 ml of dry diethyl ether and cooled to -78°C under argon atmosphere. 36.1 ml of diisobutylaluminum hydride (1M in hexane) were added dropwise and the solution was stirred for 30 min at -78°C before being quenched with potassium sodium tartrate (Rochelle salt) solution. The organic layer was separated, dried over Na2SO4, filtered, and concentrated to dryness. The raw product was used without further purification. Yield: 13.3 g, >100% ESI-MS: 388.3 [M+H]+ Preparation of compound
7.0 g (18.1 mmol) of the aldehyde (S)-tert-butyl 2-(bis(tert-butoxycarbonyl)amino)-5- oxopentanoate (ZED721) were dissolved in 30 mL DCM. At 0°C 1.04 g (1.05 eq) methyl isocyanide and 1.09 mL (1.05 eq) acetic acid were added, and the reaction was stirred at room temperature overnight.35 mL TFA were added, and the reaction was stirred for another 3 h. The solvent was evaporated, and the residue was dissolved in 20 mL DMF. 6.29 mL (2 eq) DIPEA and 4.73 g (1.2 eq) di-tert-butyl dicarbonate in 5 mL DMF were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in DCM. After extraction with NaHCO3 solution (1.05 eq in water), 1.5 eq citric acid was added to the aqueous phase, followed by re-extraction with DCM. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography. Yield: 5.77 g, 92% ESI-MS: 347.3 [M+H]+
Preparation of compound
5.77 g (16.7 mmol) of ZED3221, 6.33 g (1 eq) HATU and 5.02 g (1 eq) ZED3913 were dissolved in 100 mL DMF and 5.80 mL DIPEA (2 eq) and stirred at 45°C overnight. The solvent was evaporated; the residue was dissolved in 50 mL EtOAc and washed twice with each 35 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 7.41 g, 71% ESI-MS: 630.5 [M+H]+ Preparation of compound I-1b
600 mg (0.95 mmol) of I-1a were dissolved in 5 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 5 ml DMF. 120 mg (1 eq) 1-methyl-1H-imidazole-5-carboxylic acid, 362 mg (1 eq) HATU and 332 µl (2 eq) DIPEA were added, and the reaction was stirred at room temperature overnight. The solvent was evaporated; the residue was dissolved in 25 mL EtOAc and washed with each 15 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 527 mg, 87% ESI-MS: 638.5 [M+H]+
Preparation of compound I-1c
527 mg (0.83 mmol) of I-1b were dissolved in 7 ml MeOH.171 mg (1.5 eq) potassium carbonate were added, and the reaction was stirred at room temperature for 1 h. The solution was diluted with DCM and washed with water. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 469 mg, 95% ESI-MS: 596.5 [M+H]+
469 mg (0.60 mmol) of I-1c were dissolved in 5 ml DMF.534 mg (1.6 eq) Dess-Martin periodinane (DMP) were added and the reaction was stirred at room temperature over 2 h. The precipitate was filtered off and the filtrate was evaporated. The residue was purified by HPLC. Yield: 362 mg, 77% ESI-MS: 594.5 [M+H]+ 1H-NMR (DMSO-D6, 500 MHz, δ [ppm]: 1.27 (t, 3H, ethyl-CH3), 1.74 (m, 6H, adamantyl-C4-H2), 1.97 // 2.15 (m // m, 1H // 1H, β-CH2), 2.09 (m, 3H, adamantyl-C3- H), 2.17 (m, 6H, adamantyl-C2-H2), 3.23 (m, 2H, ethyl-CH2), 2.91 (t, 2H, γ-CH2), 3.74 (s, 3H, imidazole-N-CH3), 4.54 (ddd, 1H, a-CH2), 4.61 (s, 2H, N-CH2), 6.26 (t, 1H, pyridinone-C5-H), 7.31 (d, 1H, pyridinone-C6-H), 7.69 (s, 1H, imidazole-CH), 7.77 (s,
1H, imidazole-CH), 8.04 (d, 1H, adamantyl-NH), 8.17 (d, 1H, pyridinone-C4-H), 8.44 (q, 1H, ethylamide-NH), 8.56 (d, 1H, α-NH), 9.16 (s, 1H, pyridinone-NH). 13C-NMR (DMSO-D6, 500 MHz, δ [ppm]: 15.14 (ethyl-CH3), 24.54 (β-CH2), 29.19 (adamantyl-C3-H), 33.54 (imidazole-N-CH3), 33.71 (γ-CH2), 34.41 (ethyl-CH2), 35.89 (adamantyl-C4-H2), 40.77 (adamantyl-C2-H2), 44.12 (adamantyl-C1), 51.74 (N-CH2), 52.42 (α-CH2), 104.66 (pyridinone-C5-H), 122.39 (pyridinone-C4-H), 125.22 (imidazole- Cq), 127.92 (pyridinone-N-Cq), 132.85 (imidazole-CH), 133.27 (pyridinone-C6-H), 142.23 (imidazole-CH), 156.63 (pyridinone-C=O), 160.32 (imidazole-C=O), 161.10 (C=O-NH-CH2CH3), 165.75 (C=O-adamantylamide), 170.56 (C=O-NH-pyridinone), 198.43 (C=O-ethylamide).
The synthesis of compound I-2 was performed according to compound I-1, using 1-Boc- imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 45 mg, 63% (last step) ESI-MS: 580.4 [M+H]+
The synthesis of compound I-3 was performed according to compound I-1, using N- methyl-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 26 mg, 52% (last step) ESI-MS: 608.5 [M+H]+ Preparation of compound I-4
To the ^-hydroxyester precursor of compound I-4 (382 mg, 0.61 mmol, prepared by using 3,5-dimethyl-1-adamantanamine in step 2 according to compound ZED3912) in 10 mL of acetonitrile, 1 mg of TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl, 1 mol%) were added.88 mg of calcium hypochlorite (1 eq) were added at 0°C and the reaction mixture was stirred at 25°C for 2 h. The suspension was filtered, diluted with ethyl acetate and washed with NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 176 mg, 46% ESI-MS: 622.5 [M+H]+ Preparation of compound I-5
(S)-N1-ethyl-N6-(1-(2-(3-ethyladamantane-1-amino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-yl)-5-(1-methyl-1H-imidazole-5-carboxamido)-2-oxohexanediamide Chemical Formula: C32H43N7O6 Exact Mass: 621.33 Molecular Weight: 621.73 To the ^-hydroxyester precursor of compound I-5 (162 mg, 0.26 mmol, prepared by using 3-ethyl-1-adamantanamine in step 2 according to compound ZED3912) in 5 ml DMSO,
145 mg of 2-iodoxybenzoic acid (IBX, 2 eq) were added and the reaction mixture was stirred at room temperature for 3 h. NaHCO3 solution (10%) was added and the suspension was extracted with EtOAc. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 59 mg, 37% (last step) ESI-MS: 622.5 [M+H]+ Preparation of compound I-6
The synthesis of compound I-6 was performed according to compound I-1, using 3- trifluoromethyl-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 36 mg, 51% (last step) ESI-MS: 662.4 [M+H]+ Preparation of compound I-7
The synthesis of compound I-7 was performed according to compound I-1, using 3- hydroxy-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 21 mg, 45% (last step) ESI-MS: 610.5 [M+H]+
Preparation of compound I-8
The synthesis of compound I-8 was performed according to compound I-1, using 3- fluoro-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 52 mg, 61% (last step) ESI-MS: 612.5 [M+H]+ Preparation of compound I-9
(S)-N1-ethyl-N6-(1-(2-(3-chloroadamantane-1-amino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-yl)-5-(1-methyl-1H-imidazole-5-carboxamido)-2-oxohexanediamide Chemical Formula: C30H38ClN7O6 Exact Mass: 627.26 Molecular Weight: 628.12 The synthesis of compound I-9 was performed according to compound I-1, using 3- chloro-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 49 mg, 68% (last step) ESI-MS: 628.3 / 630.3 [M+H]+
The synthesis of compound I-10 was performed according to compound I-1, using 3- bromo-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 59 mg, 71% (last step) ESI-MS: 672.3 / 674.3 [M+H]+ Preparation of compound I-11
The synthesis of compound I-11 was performed according to compound I-1, using methyl 3-aminoadamantane-1-carboxylate instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 85 mg, 74% (last step) ESI-MS: 652.5 [M+H]+ Preparation of compound I-12
The synthesis of compound I-3 was performed according to compound I-12, using 4,4- difluoro-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 23 mg, 47% (last step) ESI-MS: 630.4 [M+H]+
The synthesis of compound I-3 was performed according to compound I-13, using (−)- cis-myrtanylamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 74 mg, 68% (last step) ESI-MS: 596.5 [M+H]+ Preparation of compound I-14
The synthesis of compound I-3 was performed according to compound I-14, using (−)- cis-(pinan-2-ylmethyl)amine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 52 mg, 63% (last step) ESI-MS: 596.5 [M+H]+ Preparation of compound I-15
The synthesis of compound I-15 was performed according to compound I-5, using 1- methyl-1H-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 26 mg, 67% (last step) ESI-MS: 622.5 [M+H]+ Preparation of compound I-16
The synthesis of compound I-16 was performed according to compound I-5, using 1- methyl-1H-imidazole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 46 mg, 71% (last step) ESI-MS: 622.5 [M+H]+ Preparation of compound I-17
The synthesis of compound I-17 was performed according to compound I-5, using 1,4- dimethyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 69 mg, 75% (last step) ESI-MS: 636.5 [M+H]+
Preparation of compound I-18
The synthesis of compound I-18 was performed according to compound I-5, using 1- isobutyl-1H-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 38 mg, 62% (last step) ESI-MS: 664.5 [M+H]+ Preparation of compound I-19
The synthesis of compound I-19 was performed according to compound I-5, using 1- cyclopentyl-1H-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in step 6 (according to compound I-1b). Yield: 24 mg, 57% (last step) ESI-MS: 676.5 [M+H]+ Preparation of compound I-20
The synthesis of compound I-20 was performed according to compound I-5, using 1- cyclobutyl-1H-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 32 mg, 66% (last step) ESI-MS: 662.5 [M+H]+ Preparation of compound I-21
The synthesis of compound I-21 was performed according to compound I-4, using 1,4- dimethyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 25 mg, 56% (last step) ESI-MS: 636.5 [M+H]+ Preparation of compound I-22
The synthesis of compound I-22 was performed according to compound I-4, using 1- methyl-1H-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 45 mg, 77% (last step) ESI-MS: 622.5 [M+H]+
Preparation of compound I-23
The synthesis of compound I-23 was performed according to compound I-4, using 1- methyl-1H-imidazole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 18 mg, 50% (last step) ESI-MS: 622.5 [M+H]+ Preparation of compound I-24
Chemical Formula: C33H45N7O6 Exact Mass: 635.34 Molecular Weight: 635.75 (S)-2-(1,2-dimethyl-1H-imidazole-5-carboxamido)-N6-ethyl-N1-(1-(2-(3,5-dimethyladamantane- 1-amino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-yl)-5-oxohexanediamide The synthesis of compound I-24 was performed according to compound I-4, using 1,2- dimethyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 44 mg, 72% (last step) ESI-MS: 636.5 [M+H]+
Preparation of compound I-25
The synthesis of compound I-25 was performed according to compound I-1, using 3- methyl-1-adamantanamine instead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 37 mg, 59% (last step) ESI-MS: 608.5 [M+H]+ Preparation of compound I-26
The synthesis of compound I-26 was performed according to compound I-4, using 2- chloro-1-methyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in step 6 (according to compound I-1b). Yield: 57 mg, 71% (last step) ESI-MS: 656.5 / 658.5 [M+H]+ Preparation of compound I-27
The synthesis of compound I-27 was performed according to compound I-25, using 1,2- dimethyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in step 6 (according to compound I-1b). Yield: 29 mg, 52% (last step) ESI-MS: 622.5 [M+H]+ Preparation of compound I-28
The synthesis of compound I-28 was performed according to compound I-1, using 3,5,7-trimethyl-1-adamantanamineinstead of 1-adamantanamine in step 2 (preparation of compound ZED3912). Yield: 48 mg, 63% (last step) ESI-MS: 636.5 [M+H]+ Preparation of compound I-29
The synthesis of compound I-29 was performed according to compound I-28, using 2- chloro-1-methyl-1H-imidazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in step 6 (according to compound I-1b). Yield: 23 mg, 52% (last step) ESI-MS: 670.5 / 672.5 [M+H]+
Example II. Synthetic method Scheme II-1
1 Preparation of compound
30.0 g (214 mmol) of 2-hydroxy-3-nitropyridine and 40.5 g (2 eq) of chloroacetic acid were suspended in 600 mL water. At 40°C, 245 g (3 eq) trisodium phosphate dodecahydrate were added, and the reaction was stirred at room temperature overnight. 250 mL HCl (32%) were added, and the suspension was stirred for another night at 4°C. The precipitate was filtered and dried. Yield: 41.2 g, 97% ESI-MS: 199.3 [M+H]+ 2 Preparation of compound ZED3905
17.0 g (85.8 mmol) of ZED1657, 16.1 g (1 eq) of 2-adamantanamine hydrochloride and 11.6 g (1 eq) of HOBt were dissolved in 200 mL DMF and 17.9 mL (1.2 eq) DIPEA.18.1 g (1.1 eq) of 1-ethyl-3-(3ʹ-dimethylaminopropyl)carbodiimide hydrochloride were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in 500 mL DCM. The solution was washed
with each 200 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 24.1 g, 85% ESI-MS: 332.4 [M+H]+ 3 4 Preparation of compound ZED3906
24.2 g (73.0 mmol) of ZED3905 were suspended in 600 mL MeOH before 2.42 g of palladium (10%) on activated carbon (unreduced) were added. The suspension was stirred overnight at room temperature under an atmosphere of hydrogen. The catalyst was filtered, and the solvent was evaporated. Yield: 15.7 g, 71% ESI-MS: 302.4 [M+H]+ Scheme II-2
Preparation of compound ZED788
12.0 g of Boc-L-Glu-OtBu (39.6 mmol) and 7.09 g of cesium carbonate (21.8 mmol, 0.55 eq) were suspended in 100 ml of DMF and stirred for 1 h at room temperature.2.47 ml iodomethane (39.6 mmol) we added, and the mixture was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.4 g, >100% ESI-MS: 318.3 [M+H]+ Preparation of compound
13.4 g of ZED788 ( ^39,6 mmol) and 986 mg of N,N-dimethyl-4-aminopyridine (DMAP) were dissolved in 30 ml of acetonitrile.17.6 g of di-tert-butyl bicarbonate (77.1 mmol) in 100 ml of acetonitrile was added and the solution was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.7 g, 83% ESI-MS: 418.3 [M+H]+ Preparation of compound ZED721
13.7 g of ZED720 (32.8 mmol) were dissolved in 200 ml of dry diethyl ether and cooled to -78°C under argon atmosphere. 36.1 ml of diisobutylaluminum hydride (1M in hexane) were added dropwise and the solution was stirred for 30 min at -78°C before being quenched with potassium sodium tartrate (Rochelle salt) solution. The organic layer was separated, dried over Na2SO4, filtered, and concentrated to dryness. The raw product was used without further purification. Yield: 13.3 g, >100% ESI-MS: 388.3 [M+H]+ 5 Preparation of compound
15.0 g (38.7 mmol) of the aldehyde (S)-tert-butyl 2-(bis(tert-butoxycarbonyl)amino)-5- oxopentanoate (ZED721) were dissolved in 60 mL DCM. At 0°C 2.42 mL (1.05 eq) methyl isocyanide and 2.33 mL (1.05 eq) acetic acid were added, and the reaction was stirred at room temperature overnight. 75 mL TFA were added, and the reaction was stirred for another 3 h. The solvent was evaporated, and the residue was dissolved in 40 mL DMF.13.2 mL (2 eq) DIPEA and 10.4 g (46.6 mmol) di-tert-butyl dicarbonate in 10 mL DMF were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in DCM. After extraction with NaHCO3 solution (1.05 eq in water), 1.5 eq citric acid was added to the aqueous phase, followed by re-extraction with DCM. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography. Yield: 12.5 g, 95% ESI-MS: 333.5 [M+H]+
6 Preparation of compound ZED3907
19.8 g (59.5 mmol) of ZED3632, 22.6 g (1 eq) HATU and 17.9 g (1 eq) ZED3906 were dissolved in 400 mL DMF and 20.8 mL DIPEA (2 eq) and stirred at 45°C overnight. The solvent was evaporated; the residue was dissolved in 200 mL EtOAc and washed twice with each 150 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 27.4 g, 75% ESI-MS: 616.4 [M+H]+
480 mg (0.78 mmol) of ZED3907 were dissolved in 4 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 4 ml DMF. 137 mg (1 eq) 3-methylbenzo[b]furan-2-carboxylic acid, 296 mg (1 eq) HATU and 272 µl (2 eq) DIPEA were added, and the reaction was stirred at room temperature overnight. The solvent was evaporated; the residue was dissolved in 20 mL EtOAc and washed with each 10 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 409 mg, 78% ESI-MS: 674.4 [M+H]+
8 Preparation of compound ZED3266
409 mg (0.61 mmol) of ZED3907 were dissolved in 5 ml MeOH. 126 mg (1.5 eq) potassium carbonate were added, and the reaction was stirred at room temperature for 1 h. The solution was diluted with DCM and washed with water. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 377 mg, 98% ESI-MS: 632.4 [M+H]+ 9 Preparation of compound II-3
377 mg (0.60 mmol) of ZED3266 were dissolved in 2 ml DMF.405 mg (1.6 eq) Dess- Martin periodinane (DMP) were added and the reaction was stirred at room temperature over 2 h. The precipitate was filtered off and the filtrate was evaporated. The residue was purified by HPLC. Yield: 314 mg, 67% ESI-MS: 630.4 [M+H]+ 1H-NMR (DMSO-D6, 500 MHz, ^ [ppm]: 1.46 // 1.98 (d // d, 2H // 2H, adamantyl-C4-H2), 1.68 // 1.78 (m, 4H, adamantyl-C4-H2), 1.71 (m, 2H, adamantyl-C1-H), 1.75 (m, 2H, adamantyl-C6-H2), 1.78 (m, 2H, adamantyl-C5-H), 2.05 // 2.16 (m // m, 1H // 1H, ^- CH2), 2.53 (s, 3H, benzofuran-CH3), 2.64 (d, 3H, amide-N-CH3), 2.96 (t, 2H, ^-CH2),
3.82 (m, 1H, adamantyl-C2-H), 4.64 (s, 2H, N-CH2), 4.70 (ddd, 1H, ^-CH2), 6.25 (t, 1H, pyridinone-C5-H), 7.33 (d, 1H, pyridinone-C6-H), 7.36 (t, 1H, benzofuran-CH), 7.51 (t, 1H, benzofuran-CH), 7.63 (d, 1H, benzofuran-CH), 7.76 (d, 1H, benzofuran-CH), 8.06 (d, 1H, adamantyl-NH), 8.21 (d, 1H, pyridinone-C4-H), 8.54 (q, 1H, methylamide-NH), 8.87 (d, 1H, ^ ^-NH), 9.36 (s, 1H, pyridinone-NH). 13C-NMR (DMSO-D6, 500 MHz, ^ [ppm]: 8.62 (benzofuran-CH3), 24.50 ( ^-CH2), 25.37 (amide-N-CH3), 26.57 // 26.62 (adamantyl-C5-H), 30.83 (adamantyl-C4-H2), 31.35 (adamantyl-C1-H), 33.61 ( ^-CH2), 36.66 (adamantyl-C4’-H2), 37.01 (adamantyl-C6-H2), 51.64 (N-CH2), 52.80 ( ^-CH2), 53.24 (adamantyl-C2-H), 104.51 (pyridinone-C5-H), 111.55 (benzofuran-CH), 121.09 (benzofuran-CH), 121.72 (benzofuran-Cq), 122.53 (pyridinone-C4-H), 123.19 (benzofuran-CH), 127.28 (pyridinone-N-Cq), 127.89 (benzofuran-CH), 129.02 (benzofuran-Cq), 133.27 (pyridinone-C6-H), 142.31 (benzofuran-Cq), 152.68 (benzofuran-Cq), 156.55 (pyridinone-C=O), 159.59 (benzofuran-C=O), 161.32 (C=O-NH-CH3), 165.65 (C=O-adamantylamide), 170.42 (C=O-NH-pyridinone), 198.06 (C=O-methylamide). 10 Preparation of compound II-2
To the ^-hydroxyester precursor of compound II-2 (242 mg, 0.39 mmol, prepared by using benzofuran-2-carboxylic acid in step 6 according to compound ZED3264) in 8 mL of acetonitrile, 1 mg of TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl, 1 mol%) were added. 56 mg of calcium hypochlorite (1 eq) were added at 0°C and the reaction mixture was stirred at 25°C for 2 h. The suspension was filtered, diluted with ethyl acetate and washed with NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 102 mg, 42% ESI-MS: 616.3 [M+H]+
11 Preparation of compound II-4
To the ^-hydroxyester precursor of compound II-4 (124 mg, 0.19 mmol, prepared by using 3-chlorobenzofuran-2-carboxylic acid in step 6 according to compound ZED3264) in 4 ml DMSO, 106 mg of 2-iodoxybenzoic acid (IBX, 2 eq) were added and the reaction mixture was stirred at room temperature for 3 h. NaHCO3 solution (10%) was added and the suspension was extracted with EtOAc. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 37 mg, 30% (last step) ESI-MS: 650.3 / 652.3 [M+H]+ 12 Preparation of compound II-5
The synthesis of compound II-5 was performed according to compound II-3, using 4- bromo-1-benzofuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 69 mg, 72% (last step) ESI-MS: 694.3 / 696.3 [M+H]+
13 Preparation of
The synthesis of compound II-6 was performed according to compound II-3, using benzo[b]thiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 287 mg, 76% (last step) ESI-MS: 632.3 [M+H]+ 14 Preparation of compound II-7
The synthesis of compound II-7 was performed according to compound II-3, using 5- bromobenzo[b]thiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 145 mg, 59% (last step) ESI-MS: 710.2 / 712.2 [M+H]+
15 Preparation of compound II-8
The synthesis of compound II-8 was performed according to compound II-3, using 7- fluorobenzo[b]thiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 78 mg, 71% (last step) ESI-MS: 650.3 [M+H]+ 16 Preparation of compound II-9
The synthesis of compound II-9 was performed according to compound II-3, using 1H- indole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 57 mg, 69% (last step) ESI-MS: 615.4 [M+H]+
17 Preparation of compound II-10
The synthesis of compound II-10 was performed according to compound II-3, using 4,5- difluoro-1H-indole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 47 mg, 65% (last step) ESI-MS: 651.3 [M+H]+ 18 Preparation of compound II-11
The synthesis of compound II-11 was performed according to compound II-3, using 3- methyl-1H-indole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 58 mg, 72% (last step) ESI-MS: 629.4 [M+H]+
19 Preparation of compound II-12
The synthesis of compound II-12 was performed according to compound II-3, using 1H- benzo[d]imidazole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 27 mg, 48% (last step) ESI-MS: 616.4 [M+H]+ 20 Preparation of compound II-13
The synthesis of compound II-13 was performed according to compound II-3, using 2,3- dihydro-1H-indene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 38 mg, 61% (last step) ESI-MS: 616.4 [M+H]+
21 Preparation of compound II-14
The synthesis of compound II-14 was performed according to compound II-3, using 2- bromo-4-methylthiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 98 mg, 70% (last step) ESI-MS: 675.2 / 677.2 [M+H]+ 22 Preparation of compound II-15
The synthesis of compound II-15 was performed according to compound II-3, using 4- methyl-2-(trifluoromethyl)thiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 67 mg, 51% (last step) ESI-MS: 665.4 [M+H]+ 23 Preparation of compound II-16
The synthesis of compound II-16 was performed according to compound II-3, using 4- bromo-2-(trifluoromethyl)thiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 136 mg, 63% (last step) ESI-MS: 729.3 / 731.3 [M+H]+ 24 Preparation of compound II-17
The synthesis of compound II-17 was performed according to compound II-3, using 2,4- dichlorothiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 102 mg, 71% (last step) ESI-MS: 651.2 / 653.2 [M+H]+ 25 Preparation of compound II-18
The synthesis of compound II-18 was performed according to compound II-3, using 2- methoxy-4-methylthiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 56 mg, 63% (last step) ESI-MS: 627.3 [M+H]+
26 Preparation of compound II-19
The synthesis of compound II-19 was performed according to compound II-3, using 4- methyl-2-phenylthiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 46 mg, 67% (last step) ESI-MS: 673.4 [M+H]+ 27 Preparation of compound II-20
The synthesis of compound II-20 was performed according to compound II-3, using 2,4- dimethylthiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 216 mg, 77% (last step) ESI-MS: 611.4 [M+H]+
28 Preparation of compound II-21
The synthesis of compound II-21 was performed according to compound II-3, using 5- bromo-3-methylthiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 178 mg, 79% (last step) ESI-MS: 674.2 / 676.2.4 [M+H]+ 29 Preparation of compound II-22
The synthesis of compound II-22 was performed according to compound II-3, using 3,5- dibromothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 89 mg, 67% (last step) ESI-MS: 738.2 / 740.2 / 742.2 [M+H]+
30 Preparation of compound II-23
The synthesis of compound II-23 was performed according to compound II-3, using 5- bromothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 141 mg, 72% (last step) ESI-MS: 660.2 / 662.2 [M+H]+ 31 Preparation of compound II-24
The synthesis of compound II-24 was performed according to compound II-3, using 5- chlorothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 117 mg, 78% (last step) ESI-MS: 616.3 / 618.3 [M+H]+
32 Preparation of compound II-25
The synthesis of compound II-25 was performed according to compound II-3, using 5- bromo-3-methylfuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 173 mg, 72% (last step) ESI-MS: 658.2 / 660.2 [M+H]+ 33 Preparation of compound II-26
The synthesis of compound II-26 was performed according to compound II-3, using 5- chlorofuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 127 mg, 56% (last step) ESI-MS: 600.3 / 602.3 [M+H]+
34 Preparation of compound II-27
The synthesis of compound II-27 was performed according to compound II-3, using 5- chlorothiophene-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 112 mg, 65% (last step) ESI-MS: 616.3 / 618.3 [M+H]+ 35 Preparation of compound II-28
The synthesis of compound II-28 was performed according to compound II-3, using 2,5- dichlorothiophene-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 319 mg, 77% (last step) ESI-MS: 650.3 / 652.3 / 654.3 [M+H]+
36 Preparation of compound II-29
The synthesis of compound II-29 was performed according to compound II-3, using 2,5- dibromothiophene-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 98 mg, 52% (last step) ESI-MS: 738.2 / 740.2 / 742.2 [M+H]+ 37 Preparation of compound II-30
The synthesis of compound II-30 was performed according to compound II-3, using 5- bromothiophene-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 171 mg, 73% (last step) ESI-MS: 660.2 / 662.2 [M+H]+
38 Preparation of compound II-31
The synthesis of compound II-31 was performed according to compound II-3, using 2- chloro-5-methylthiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 32 mg, 41% (last step) ESI-MS: 631.3 / 633.3 [M+H]+ 39 Preparation of compound II-32
The synthesis of compound II-32 was performed according to compound II-3, using 2,5- dichlorothiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 41 mg, 35% (last step) ESI-MS: 651.2 / 653.2 / 655.2 [M+H]+
40 Preparation of compound II-33
The synthesis of compound II-33 was performed according to compound II-3, using 2,5- dibromothiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 21 mg, 32% (last step) ESI-MS: 739.2 / 741.2 / 743.2 [M+H]+
The synthesis of compound II-34 was performed according to compound II-3, using 2- bromo-5-methylthiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 42 mg, 57% (last step) ESI-MS: 675.2 / 677.2 [M+H]+
The synthesis of compound II-35 was performed according to compound II-3, using 2- bromothiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 66 mg, 46% (last step) ESI-MS: 661.2 / 663.2 [M+H]+ 43 Preparation of compound II-36
The synthesis of compound II-36 was performed according to compound II-3, using 2- chlorothiazole-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 74 mg, 58% (last step) ESI-MS: 617.3 / 619.3 [M+H]+
44 Preparation of compound II-37
The synthesis of compound II-37 was performed according to compound II-3, using 2,5- dimethylfuran-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 152 mg, 73% (last step) ESI-MS: 594.4 [M+H]+ 45 Preparation of compound II-38
The synthesis of compound II-38 was performed according to compound II-3, using 4,5- dimethylthiazole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 46 mg, 38% (last step) ESI-MS: 611.4 [M+H]+
46 Preparation of compound II-39
The synthesis of compound II-39 was performed according to compound II-3, using 4- bromothiazole-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 84 mg, 68% (last step) ESI-MS: 661.2 / 663.2 [M+H]+ 47 Preparation of c
The synthesis of compound II-40 was performed according to compound II-3, using 4- bromothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 163 mg, 73% (last step) ESI-MS: 660.2 / 662.2 [M+H]+
48 Preparation of compound II-41
The synthesis of compound II-41 was performed according to compound II-3, using 4- bromo-3-methylthiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 114 mg, 68% (last step) ESI-MS: 674.2 / 676.2 [M+H]+
The synthesis of compound II-42 was performed according to compound II-3, using 3- bromothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 149 mg, 76% (last step) ESI-MS: 660.2 / 662.2 [M+H]+
50 Preparation of compound II-43
The synthesis of compound II-43 was performed according to compound II-3, using 3- chloro-4-methylthiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 110 mg, 64% (last step) ESI-MS: 630.3 / 632.3 [M+H]+ 51 Preparation of compound II-44
The synthesis of compound II-44 was performed according to compound II-3, using 4- bromo-5-chlorothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 126 mg, 59% (last step) ESI-MS: 694.2 / 696.2 / 698.2 [M+H]+
52 Preparation of compound II-45
The synthesis of compound II-45 was performed according to compound II-3, using 4,5- dibromothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 89 mg, 51% (last step) ESI-MS: 738.2 / 740.2 / 742.2 [M+H]+ 53 Preparation of compound II-46
The synthesis of compound II-46 was performed according to compound II-3, using 4,5- dibromo-3-methoxythiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 59 mg, 40% (last step) ESI-MS: 768.2 / 770.2 / 772.2 [M+H]+
The synthesis of compound II-47 was performed according to compound II-3, using 4- bromofuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 90 mg, 69% (last step) ESI-MS: 644.3 / 646.3 [M+H]+ 55 Preparation of compound II-48
The synthesis of compound II-48 was performed according to compound II-3, using 4,5- dibromofuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 72 mg, 56% (last step) ESI-MS: 722.2 / 724.2 / 726.2 [M+H]+
56 Preparation of compound II-49
The synthesis of compound II-49 was performed according to compound II-3, using 4,5- dichlorothiophene-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 55 mg, 48% (last step) ESI-MS: 650.3 / 652.3 / 654.3 [M+H]+
(S)-2-((S)-1-acetylpyrrolidine-2-carboxamido)-N1-(1-(2-(2-adamantylamino)- 2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-yl)-N6-methyl-5-oxohexanediamide Chemical Formula: C31H42N6O7 Exact Mass: 610.31 Molecular Weight: 610.70 The synthesis of compound II-50 was performed according to compound II-3, using (S)- 1-acetylpyrrolidine-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 190 mg, 78% (last step) ESI-MS: 611.4 [M+H]+
58 Preparation of compound II-51
The synthesis of compound II-51 was performed according to compound II-3, using 1- methyl-1H-1,2,3-triazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 28 mg, 35% (last step) ESI-MS: 581.4 [M+H]+ 59 Preparation of compound II-52
The synthesis of compound II-52 was performed according to compound II-3, using 2H- tetrazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 23 mg, 31% (last step) ESI-MS: 568.4 [M+H]+
60 Preparation of compound II-53
The synthesis of compound II-53 was performed according to compound II-3, using pyrazine-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 79 mg, 74% (last step) ESI-MS: 578.3 [M+H]+ 61 Preparation of compound II-54
The synthesis of compound II-54 was performed according to compound II-3, using (S)- 1-methylpyrrolidine-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 68 mg, 82% (last step) ESI-MS: 583.4 [M+H]+
62 Preparation of compound II-55
The synthesis of compound II-55 was performed according to compound II-3, using (S)- 1-Boc-pyrrolidine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 43 mg, 79% (last step) ESI-MS: 569.4 [M+H]+
The synthesis of compound II-56 was performed according to compound II-3, using (2S,4S)-1-Boc-4-bromopyrrolidine-2-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 45 mg, 73% (last step) ESI-MS: 647.3 / 649.3 [M+H]+
64 Preparation of compound II-58
The synthesis of compound II-58 was performed according to compound II-3, using (S)- 1-Boc-piperidine-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 53 mg, 86% (last step) ESI-MS: 583.4 [M+H]+ 65 Preparation of compound II-59
The synthesis of compound II-59 was performed according to compound II-3, using (R)- 1-Boc-piperidine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 43 mg, 77% (last step) ESI-MS: 583.4 [M+H]+
66 Preparation of compound II-60
The synthesis of compound II-60 was performed according to compound II-3, using (R)- 4-Boc-morpholine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 67 mg, 85% (last step) ESI-MS: 585.4 [M+H]+ 67 Preparation of compound II-61
The synthesis of compound II-61 was performed according to compound II-3, using quinuclidine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 24 mg, 54% (last step) ESI-MS: 609.4 [M+H]+
68 Preparation of compound II-62
(S)-methyl 3-(1-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-6-(methylamino)-1,5,6-trioxohexan-2-ylcarbamoyl)-5-nitrobenzoate Chemical Formula: C33H38N6O10 Exact Mass: 678.26 Molecular Weight: 678.69 The synthesis of compound II-62 was performed according to compound II-3, using mono-methyl 5-nitroisophthalate instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 57 mg, 66% (last step) ESI-MS: 679.3 [M+H]+ 69 Preparation of compound II-63
The synthesis of compound II-63 was performed according to compound II-3, using 5- nitronicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 76 mg, 65% (last step) ESI-MS: 622.3 [M+H]+
70 Preparation of compound II-64
(S)-5-(1-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-ylamino)- 6-(methylamino)-1,5,6-trioxohexan-2-ylcarbamoyl)nicotinic acid Chemical Formula: C31H36N6O8 Exact Mass: 620.26 Molecular Weight: 620.65 The synthesis of compound II-64 was performed according to compound II-3, using 3,5- pyridinedicarboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 16 mg, 52% (last step) ESI-MS: 621.3 [M+H]+ 71 Preparation of compound II-65
The synthesis of compound II-65 was performed according to compound II-3, using 5- (methoxycarbonyl)nicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 34 mg, 62% (last step) ESI-MS: 635.3 [M+H]+
72 Preparation of compound II-66
The synthesis of compound II-66 was performed according to compound II-3, using 6- methylimidazo[2,1-b]thiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 45 mg, 37% (last step) ESI-MS: 636.4 [M+H]+ 73 Preparation of compound II-67
The synthesis of compound II-67 was performed according to compound II-3, using N-methyl-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 66 mg, 45% (last step) ESI-MS: 644.4 [M+H]+
74 Preparation of compound II-68
The synthesis of compound II-68 was performed according to compound II-3, using 5- hydroxy-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 21 mg, 34% (last step) ESI-MS: 646.4 [M+H]+ 75 Preparation of compound II-69
The synthesis of compound II-69 was performed according to compound II-3, using 5- fluoro-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 48 mg, 57% (last step) ESI-MS: 648.4 [M+H]+
76 Preparation of compound II-70
The synthesis of compound II-70 was performed according to compound II-3, using 5- chloro-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 45 mg, 35% (last step) ESI-MS: 664.3 / 666.3 [M+H]+ 77 Preparation of compound II-71
The synthesis of compound II-71 was performed according to compound II-3, using 5- bromo-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 31 mg, 34% (last step) ESI-MS: 708.3 / 710.3 [M+H]+
78 Preparation of compound II-72
The synthesis of compound II-72 was performed according to compound II-3, using 5- methyl-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 68 mg, 54% (last step) ESI-MS: 644.4 [M+H]+ 79 Preparation of compound II-73
The synthesis of compound II-73 was performed according to compound II-3, using 2- aminoadamantane-2-carbonitrile instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 26 mg, 46% (last step) ESI-MS: 655.4 [M+H]+
80 Preparation of compound II-74
The synthesis of compound II-74 was performed according to compound II-3, using 2- methyl 2-aminoadamantane-2-carboxylate instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 38 mg, 61% (last step) ESI-MS: 688.4 [M+H]+ 81 Preparation of compound II-87
The synthesis of compound II-87 was performed according to compound II-3, using 1- adamantanemethylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 43 mg, 53% (last step) ESI-MS: 644.4 [M+H]+
82 Preparation of compound II-88
The synthesis of compound II-88 was performed according to compound II-2, using 1- rimantadine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 31 mg, 41% (last step) ESI-MS: 644.4 [M+H]+ 83 Preparation of compound II-90
The synthesis of compound II-90 was performed according to compound II-3, using (±)- endo-2-norbornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 67 mg, 65% (last step) ESI-MS: 590.4 [M+H]+
84 Preparation of compound II-92
The synthesis of compound II-92 was performed according to compound II-3, using (R)- (+)-bornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 52 mg, 66% (last step) ESI-MS: 632.5 [M+H]+ 85 Preparation of compound II-94
The synthesis of compound II-94 was performed according to compound II-3, using exo- 2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 62 mg, 68% (last step) ESI-MS: 590.4 [M+H]+
86 Preparation of compound II-95
The synthesis of compound II-95 was performed according to compound II-3, using bicyclo[2.2.1]heptan-1-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 14 mg, 32% (last step) ESI-MS: 590.4 [M+H]+ 87 Preparation of compound II-96
The synthesis of compound II-96 was performed according to compound II-3, using bicyclo[2.2.1]heptan-7-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 36 mg, 53% (last step) ESI-MS: 590.4 [M+H]+
The synthesis of compound II-97 was performed according to compound II-3, using bicyclo[2.2.1]hept-5-en-2-amine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 21 mg, 44% (last step) ESI-MS: 588.4 [M+H]+ 89 Preparation of compound II-98
The synthesis of compound II-98 was performed according to compound II-3, using bicyclo[2.2.2]oct-2-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 25 mg, 41% (last step) ESI-MS: 604.4 [M+H]+
90 Preparation of compound II-99
The synthesis of compound II-99 was performed according to compound II-3, using (R)- (−)-isobornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 27 mg, 48% (last step) ESI-MS: 632.5 [M+H]+ 91 Preparation of compound II-100
(S)-N1-methyl-5-(3-methylbenzofuran-2-carboxamido)-2-oxo-N6-(2-oxo-1-(2-oxo-2-((1R,2R,3R,5S)- 2,6,6-trimethylbicyclo[3.1.1]heptan-3-ylamino)ethyl)-1,2-dihydropyridin-3-yl)hexanediamide Chemical Formula: C34H41N5O7 Exact Mass: 631.30 Molecular Weight: 631.72 The synthesis of compound II-100 was performed according to compound II-3, using (1R,2R,3R,5S)-(−)-isopinocampheylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 17 mg, 39% (last step) ESI-MS: 632.5 [M+H]+
92 Preparation of compound II-101
The synthesis of compound II-101 was performed according to compound II-3, using (1S,2S,3S,5R)-(+)-isopinocampheylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 25 mg, 41% (last step) ESI-MS: 632.5 [M+H]+ 93 Preparation of compound II-103
The synthesis of compound II-103 was performed according to compound II-3, using 3- amino-4-homoisotwistane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 12 mg, 28% (last step) ESI-MS: 644.5 [M+H]+
94 Preparation of compound II-104
(S)-N1-(1-(2-(diamantane-1-amino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-yl)- N6-methyl-2-(3-methylbenzofuran-2-carboxamido)-5-oxohexanediamide Chemical Formula: C38H43N5O7 Exact Mass: 681.32 Molecular Weight: 681.78 The synthesis of compound II-104 was performed according to compound II-3, using 1- aminodiamantane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 17 mg, 35% (last step) ESI-MS: 682.5 [M+H]+ 95 Preparation of compound II-105
(S)-N1-(1-(2-(diamantane-4-amino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-yl)- N6-methyl-2-(3-methylbenzofuran-2-carboxamido)-5-oxohexanediamide Chemical Formula: C38H43N5O7 Exact Mass: 681.32 Molecular Weight: 681.78 The synthesis of compound II-105 was performed according to compound II-3, using 4- aminodiamantane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 8 mg, 26% (last step) ESI-MS: 682.5 [M+H]+
Scheme II-3 New Building Block
96 Preparation of compound ZED4893
500 mg (3.57 mmol) of 2-hydroxy-3-nitropyridine and 818 mg (1 eq) of 1- (bromomethyl)adamantane were dissolved in 10 mL DMF and 1.24 mL DIPEA (2 eq) and stirred at room temperature overnight. The solvent was evaporated; the residue was dissolved in 30 mL EtOAc and washed twice with each 10 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 484 mg, 47% ESI-MS: 289.3 [M+H]+ 97 Preparation of compound ZED4894
484 mg (1.68 mmol) of ZED4893 were suspended in 30 mL MeOH before 50 mg of palladium (10%) on activated carbon (unreduced) were added. The suspension was
stirred for 3 h at room temperature under an atmosphere of hydrogen. The catalyst was filtered, and the solvent was evaporated. Yield: 339 mg, 78% ESI-MS: 259.4 [M+H]+ 98 Preparation of compound II-107
The synthesis of compound II-107 was performed according to compound II-3, using ZED4894 instead of ZED3906 in step 5 (according to ZED3907). Yield: 41 mg, 49% (last step) ESI-MS: 587.4 [M+H]+ 99 Preparation of compound II-108
The synthesis of compound II-108 was performed according to compound II-107, using 3-(bromomethyl)-1-adamantanol instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 16 mg, 36% (last step) ESI-MS: 603.4 [M+H]+
100 Preparation of compound II-109
The synthesis of compound II-109 was performed according to compound II-107, using 1-bromo-3-(bromomethyl)adamantane instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 24 mg, 41% (last step) ESI-MS: 665.3 / 667.3 [M+H]+ 101 Preparation of compound II-110
The synthesis of compound II-110 was performed according to compound II-107, using 2-(bromomethyl)adamantane instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 46 mg, 62% (last step) ESI-MS: 587.4 [M+H]+
102 Preparation of compound II-111
The synthesis of compound II-111 was performed according to compound II-3, using nicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 65 mg, 46% (last step) ESI-MS: 577.4 [M+H]+ 103 Preparation of compound II-112
The synthesis of compound II-112 was performed according to compound II-3, using isonicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 47 mg, 52% (last step) ESI-MS: 577.4 [M+H]+
104 Preparation of compound II-113
The synthesis of compound II-113 was performed according to compound II-3, using pyridazine-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 34 mg, 46% (last step) ESI-MS: 578.4 [M+H]+ 105 Preparation of compound II-114
The synthesis of compound II-114 was performed according to compound II-3, using pyridazine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (preparation of compound ZED3264). Yield: 43 mg, 56% (last step) ESI-MS: 578.4 [M+H]+
106 Preparation of compound II-115
The synthesis of compound II-115 was performed according to compound II-1, using cyclopropyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 47 mg, 64% (last step) ESI-MS: 656.5 [M+H]+ 107 Preparation of compound II-116
The synthesis of compound II-116 was performed according to compound II-1, using pentyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 87 mg, 71% (last step) ESI-MS: 686.5 [M+H]+
108 Preparation of compound II-117
The synthesis of compound II-117 was performed according to compound II-1, using allyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 42 mg, 63% (last step) ESI-MS: 656.5 [M+H]+ Scheme II-4
2) 3-Methylbenzo[b]- furan-2-carboxylic acid
HATU, DIPEA, DMF
Preparation of compound 10
15.0 g (38.7 mmol) of the aldehyde (S)-tert-butyl 2-(bis(tert-butoxycarbonyl)amino)-5- oxopentanoate (ZED721) were dissolved in 150 ml DCM. 6.42 ml (46.3 mmol) trimethylamine and 7.37 ml (79.9 mmol) acetone cyanohydrin were added, and the reaction was stirred at room temperature overnight. The solution was washed twice with each citric acid solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography. Yield: 16.2 g, >100% ESI-MS: 437.6 [M+Na]+ Preparation of compound 11
16.2 g ( ^38.6 mmol) of cyanohydrin 10 were dissolved in 95 ml MeOH at 4 °C and 1.91 g (45.5 mmol) lithium hydroxide monohydrate were added.18.6 ml hydrogen peroxide (35%) were added dropwise, and the reaction was stirred at room temperature for 1.5 h before quenching with sodium thiosulfate solution (5%). The aqueous phase was extracted with DCM. The combined organic phases were dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography. Yield: 8.61 g, 52% ESI-MS: 455.2 [M+Na]+
Preparation of compound 15
8.61 g (19.9 mmol) of hydroxyamide 10 were dissolved in 55 ml DCM. 3.45 ml (24.9 mmol) 1.91 g (45.5 mmol) trimethylamine, 2.12 ml acetic anhydride and 62 mg (0.50 mmol) DMAP were added, and the reaction was stirred at room temperature for 3 h. After washing with water and brine, the organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The product precipitates from MTBE solution by addition of hexane. Yield: 8.08 g, 86% ESI-MS: 475.5 [M+H]+ Preparation of compound 16
8.08 g (17.0 mmol) of 15 were dissolved in 140 ml DCM/TFA (1:1) and stirred at room temperature for 3 h. The solvent was evaporated, and the residue was dissolved in 40 ml DMF.5.80 ml (2 eq) DIPEA and 4.55 g (20.4 mmol) di-tert-butyl dicarbonate in 20 ml DMF were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in 80 ml EtOAc. After extraction with NaHCO3 solution (1.05 eq in water), the product precipitates from the aqueous phase by addition of 1.5 eq citric acid. Yield: 1.64 g, 30% ESI-MS: 319.4 [M+H]+
109 Preparation of compound II-118
The synthesis of compound II-118 was performed according to compound II-3, using compound 16 instead of ZED3632 in step 5 (according to ZED3907. Yield: 158 mg, 56% (last step) ESI-MS: 616.4 [M+H]+ 110 Preparation of compound II-119
The synthesis of compound II-119 was performed according to compound II-2, using allyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 56 mg, 71% (last step) ESI-MS: 642.4 [M+H]+
111 Preparation of compound II-120
The synthesis of compound II-120 was performed according to compound II-2, using isopropyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 62 mg, 65% (last step) ESI-MS: 644.5 [M+H]+ 112 Preparation of compound II-121
The synthesis of compound II-121 was performed according to compound II-2, using cyclopropyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 44 mg, 51% (last step) ESI-MS: 642.4 [M+H]+
113 Preparation of compound II-122
The synthesis of compound II-122 was performed according to compound II-2, using phenyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 37 mg, 56% (last step) ESI-MS: 678.4 [M+H]+ 114 Preparation of compound II-123
The synthesis of compound II-123 was performed according to compound II-2, using benzyl isocyanide instead of methyl isocyanide in step 4 (preparation of compound ZED3632). Yield: 46 mg, 52% (last step) ESI-MS: 692.5 [M+H]+
115 Preparation of compound II-124
Chemical Formula: C32H35N5O7 Exact Mass: 601.25 Molecular Weight: 601.65 (S)-2-(benzofuran-2-carboxamido)-N1-(1-(2-(2-adamantylamino)-2-oxoethyl)- 2-oxo-1,2-dihydropyridin-3-yl)-5-oxohexanediamide The synthesis of compound II-124 was performed according to compound II-118, using benzofuran-2-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (according to ZED3264). Yield: 96 mg, 81% (last step) ESI-MS: 602.4 [M+H]+ 116 Preparation of compound II-125
The synthesis of compound II-125 was performed according to compound II-124, using 2,5-dichlorothiophene-3-carboxylic acid instead of benzofuran-2-carboxylic acid in step 6 (according to ZED3264). Yield: 78 mg, 71% (last step) ESI-MS: 636.3 / 638.3 [M+H]+
117 Preparation of compound II-126
The synthesis of compound II-126 was performed according to compound II-124, using 4-methyl-2-(trifluoromethyl)thiazole-5-carboxylic acid instead of benzofuran-2-carboxylic acid in step 6 (according to ZED3264). Yield: 53 mg, 67% (last step) ESI-MS: 651.3 [M+H]+ 118 Preparation of compound II-127
The synthesis of compound II-127 was performed according to compound II-124, using 1-methyl-1H-1,2,3-triazole-5-carboxylic acid instead of benzofuran-2-carboxylic acid in step 6 (according to ZED3264). Yield: 26 mg, 49% (last step) ESI-MS: 567.3 [M+H]+
119 Preparation of compound II-128
Chemical Formula: C26H29Cl2N5O6S Exact Mass: 609.12 Molecular Weight: 610.51 (2S)-N1-(1-(2-((1R,2R,4S)-bicyclo[2.2.1]heptan-2-ylamino)-2-oxoethyl)-2-oxo-1,2- dihydropyridin-3-yl)-2-(2,5-dichlorothiophene-3-carboxamido)-N6-methyl-5-oxohexanediamide The synthesis of compound II-128 was performed according to compound II-97, using 2,5-dichlorothiophene-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in step 6 (according to ZED3264). Yield: 53 mg, 73% (last step) ESI-MS: 610.3 / 612.3 [M+H]+ 120 Preparation of compound II-129
The synthesis of compound II-129 was performed according to compound II-97, using 4-methyl-2-(trifluoromethyl)thiazole-5-carboxylic acid instead of 3-methylbenzo[b]furan- 2-carboxylic acid in step 6 (according to ZED3264). Yield: 42 mg, 60% (last step) ESI-MS: 625.3 [M+H]+
121 Preparation of compound II-130
The synthesis of compound II-130 was performed according to compound II-97, using 1-methyl-1H-1,2,3-triazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2- carboxylic acid in step 6 (according to ZED3264). Yield: 15 mg, 39% (last step) ESI-MS: 541.3 [M+H]+ Example III. Synthetic method III Scheme III-1
1 Preparation of compound
30.0 g (214 mmol) of 2-hydroxy-3-nitropyridine and 40.5 g (2 eq) of chloroacetic acid were suspended in 600 mL water. At 40°C, 245 g (3 eq) trisodium phosphate
dodecahydrate were added, and the reaction was stirred at room temperature overnight. 250 mL HCl (32%) were added, and the suspension was stirred for another night at 4°C. The precipitate was filtered and dried. Yield: 41.2 g, 97% ESI-MS: 199.3 [M+H]+ 2 Preparation of compound ZED3905
17.0 g (85.8 mmol) of ZED1657, 16.1 g (1 eq) of 2-adamantanamine hydrochloride and 11.6 g (1 eq) of HOBt were dissolved in 200 mL DMF and 17.9 mL (1.2 eq) DIPEA.18.1 g (1.1 eq) of 1-ethyl-3-(3ʹ-dimethylaminopropyl)carbodiimide hydrochloride were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in 500 mL DCM. The solution was washed with each 200 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 24.1 g, 85% ESI-MS: 332.4 [M+H]+ 3 Preparation of compound ZED3906
24.2 g (73.0 mmol) of ZED3905 were suspended in 600 mL MeOH before 2.42 g of palladium (10%) on activated carbon (unreduced) were added. The suspension was stirred overnight at room temperature under an atmosphere of hydrogen. The catalyst was filtered, and the solvent was evaporated. Yield: 15.7 g, 71% ESI-MS: 302.4 [M+H]+
Scheme III-2
Scheme III-3
Preparation of compound ZED788
12.0 g of Boc-L-Glu-OtBu (39.6 mmol) and 7.09 g of cesium carbonate (21.8 mmol, 0.55 eq) were suspended in 100 ml of DMF and stirred for 1 h at room temperature.2.47 ml iodomethane (39.6 mmol) we added, and the mixture was stirred at room temperature
overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.4 g, >100% ESI-MS: 318.3 [M+H]+ Preparation of compound
13.4 g of ZED788 ( ^39,6 mmol) and 986 mg of N,N-dimethyl-4-aminopyridine (DMAP) were dissolved in 30 ml of acetonitrile.17.6 g of di-tert-butyl bicarbonate (77.1 mmol) in 100 ml of acetonitrile was added and the solution was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The raw product was used without further purification. Yield: 13.7 g, 83% ESI-MS: 418.3 [M+H]+ Preparation of compound
13.7 g of ZED720 (32.8 mmol) were dissolved in 200 ml of dry diethyl ether and cooled to -78°C under argon atmosphere. 36.1 ml of diisobutylaluminum hydride (1M in hexane) were added dropwise and the solution was stirred for 30 min at -78°C before being quenched with potassium sodium tartrate (Rochelle salt) solution. The organic layer was separated, dried over Na2SO4, filtered, and concentrated to dryness. The raw product was used without further purification.
Yield: 13.3 g, >100% ESI-MS: 388.3 [M+H]+ Preparation of compound
13.3 g of ZED721 ( ^32.8 mmol) were dissolved in 60 ml of benzene and 11.2 g of (carbomethoxymethylene)triphenylphosphorane (1 eq) was added portionwise. After stirring overnight, the solvent was evaporated. The residue was purified by flash chromatography. Yield: 12.0 g, 83% ESI-MS: 444.3 [M+H]+ Preparation of compound Ib
12.0 g of ZED755 (27.1 mmol) are dissolved in 100 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 100 ml DMF and 9.23 ml DIPEA (2 eq). 7.15 g of N-(tert- butoxycarbonyloxy)succinimide were added and the reaction was stirred at room temperature overnight. The solvent was evaporated, and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography. Yield: 5.89 g, 76% ESI-MS: 288.3 [M+H]+ 5
4 Preparation of compound ZED4198
1.67 g (5.80 mmol) of (S,E)-2-(tert-butoxycarbonylamino)-7-methoxy-7-oxohept-5-enoic acid, 2.21 g (1 eq) HATU and 1.75 g (1 eq) ZED3906 were dissolved in 25 mL DMF and 1.97 mL DIPEA (2 eq) and stirred at 45°C overnight. The solvent was evaporated; the residue was dissolved in 100 mL EtOAc and washed twice with each 30 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. Yield: 1.65 g, 50% ESI-MS: 571.4 [M+H]+ 5 Preparation of compound III-1
200 mg (0.35 mmol) of ZED4198 were dissolved in 6 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 9 ml DMF. 44.2 mg (1 eq) 1-methyl-1H-imidazole-5-carboxylic acid, 133 mg (1 eq) HATU and 119 µl (2 eq) DIPEA were added, and the reaction was stirred at room temperature overnight. The solvent was evaporated and the residue was purified by HPLC. Yield: 165 mg, 81% ESI-MS: 579.4 [M+H]+
1H-NMR (DMSO-D6, 500 MHz, ^ [ppm]: 1.50 // 2.00 (d // d, 2H // 2H, adamantyl- C4-H2), 1.70 // 1.80 (m, 4H, adamantyl-C4-H2), 1.78 (m, 2H, adamantyl-C1-H), 1.78 (m, 2H, adamantyl-C6-H2), 1.80 (m, 2H, adamantyl-C5-H), 1.90 // 2.03 (m // m, 1H // 1H, ^-CH2), 2.32 (m, 2H, ^-CH2), 3.62 (s, 3H, O-CH3), 3.79 (s, 3H, imidazole-N-CH3), 3.83 (m, 1H, adamantyl-C2-H), 4.58 (ddd, 1H, ^-CH2), 4.66 (s, 2H, N-CH2), 5.85 (m, 1H, =CH-), 6.25 (t, 1H, pyridinone-C5-H), 6.92 (m, 1H, =CH-), 7.33 (d, 1H, pyridinone-C6-H), 7.72 (s, 1H, imidazole-CH), 7.77 (s, 1H, imidazole-CH), 8.09 (d, 1H, adamantyl-NH), 8.21 (d, 1H, pyridinone-C4-H), 8.61 (d, 1H, ^ ^-NH), 9.25 (s, 1H, pyridinone-NH). 13C-NMR (DMSO-D6, 500 MHz, ^ [ppm]: 26.70 // 26.64 (adamantyl-C5-H), 28.44 ( ^ -CH2), 29.10 ( ^-CH2), 30.92 (adamantyl-C4-H2), 31.44 (adamantyl-C1-H), 33.46 (imidazole-N-CH3), 36.74 (adamantyl-C4’-H2), 37.09 (adamantyl-C6-H2), 51.14 (O-CH3), 51.62 (N-CH2), 53.07 ( ^ -CH2), 53.32 (adamantyl-C2-H), 104.59 (pyridinone-C5-H), 121.04 (=CH-), 122.30 (pyridinone-C4-H), 125.06 (imidazole- Cq), 127.90 (pyridinone-N-Cq), 132.78 (imidazole-CH), 133.26 (pyridinone-C6- H), 142.18 (imidazole-CH), 148.54 (=CH-), 156.60 (pyridinone-C=O), 160.24 (imidazole-C=O), 165.71 (C=O-adamantylamide), 165.98 (Cq methyl ester), 170.69 (C=O-NH-pyridinone). 6 Preparation of compound III-2
The synthesis of compound III-2 was performed according to compound III-1, using 3- methylbenzo[b]furan-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 101 mg, 75% (last step) ESI-MS: 629.4 [M+H]+
7 Preparation of compound III-3
(S,E)-methyl 6-(3-chlorobenzofuran-2-carboxamido)-7-(1-(2-(2-adamantylamino)- 2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-ylamino)-7-oxohept-2-enoate Chemical Formula: C34H37ClN4O7 Exact Mass: 648.24 Molecular Weight: 649.13 The synthesis of compound III-3 was performed according to compound III-1, using 3- chlorobenzofuran-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 214 mg, 82% (last step) ESI-MS: 649.3 / 651.3 [M+H]+ 8 Preparation of compound III-4
The synthesis of compound III-4 was performed according to compound III-1, using 4- bromo-1-benzofuran-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 104 mg, 76% (last step) ESI-MS: 693.3 / 695.3 [M+H]+
9 Preparation of compound III-5
The synthesis of compound III-5 was performed according to compound III-1, using benzo[b]thiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 356 mg, 85% (last step) ESI-MS: 631.3 [M+H]+ 10 Preparation of compound III-6
The synthesis of compound III-6 was performed according to compound III-1, using 5- bromobenzo[b]thiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in the final step. Yield: 102 mg, 70% (last step) ESI-MS: 709.2 / 711.2 [M+H]+
11 Preparation of compound III-7
The synthesis of compound III-7 was performed according to compound III-1, using 7- fluorobenzo[b]thiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in the final step. Yield: 56 mg, 68% (last step) ESI-MS: 649.3 [M+H]+ 12 Preparation of compound III-8
The synthesis of compound III-8 was performed according to compound III-1, using 1H- indole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 79 mg, 76% (last step) ESI-MS: 614.4 [M+H]+
13 Preparation of compound III-9
The synthesis of compound III-9 was performed according to compound III-1, using 4,5- difluoro-1H-indole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 43 mg, 76% (last step) ESI-MS: 650.3 [M+H]+ 14 Preparation of compound III-10
The synthesis of compound III-10 was performed according to compound III-1, using 3- methyl-1H-indole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 73 mg, 82% (last step) ESI-MS: 628.4 [M+H]+
15 Preparation of compound III-11
The synthesis of compound III-11 was performed according to compound III-1, using 1H-benzo[d]imidazole-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 22 mg, 41% (last step) ESI-MS: 615.4 [M+H]+ 16 Preparation of compound III-12
The synthesis of compound III-12 was performed according to compound III-1, using 2,3-dihydro-1H-indene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 51 mg, 75% (last step) ESI-MS: 615.4 [M+H]+
17 Preparation of compound III-13
The synthesis of compound III-13 was performed according to compound III-1, using 2,5-dichlorothiophene-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 78 mg, 71% (last step) ESI-MS: 649.3 / 651.3 [M+H]+ 18 Preparation of compound III-14
The synthesis of compound III-14 was performed according to compound III-1, using 4- methyl-2-(trifluoromethyl)thiazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in the final step. Yield: 52 mg, 67% (last step) ESI-MS: 664.4 [M+H]+
19 Preparation of compound III-15
The synthesis of compound III-15 was performed according to compound III-1, using 3,5-dibromothiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 143 mg, 86% (last step) ESI-MS: 737.2 / 739.2 / 741.2 [M+H]+ 20 Preparation of compound III-16
The synthesis of compound III-16 was performed according to compound III-1, using 2,5-dibromothiophene-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 107 mg, 65% (last step) ESI-MS: 737.2 / 739.2 / 741.2 [M+H]+
21 Preparation of compound III-17
The synthesis of compound III-17 was performed according to compound III-1, using 5- bromothiophene-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 89 mg, 80% (last step) ESI-MS: 659.2 / 661.2 [M+H]+ 22 Preparation of compound III-18
(S,E)-methyl 6-(4-bromothiophene-2-carboxamido)-7-(1-(2-(2-adamantylamino)- 2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-ylamino)-7-oxohept-2-enoate Chemical Formula: C30H35BrN4O6S Exact Mass: 658.15 Molecular Weight: 659.59 The synthesis of compound III-18 was performed according to compound III-1, using 4- bromothiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 143 mg, 76% (last step) ESI-MS: 659.2 / 661.2 [M+H]+
23 Preparation of compound III-19
The synthesis of compound III-19 was performed according to compound III-1, using 4,5-dibromothiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 57 mg, 64% (last step) ESI-MS: 737.2 / 739.2 / 741.2 [M+H]+ 24 Preparation of compound III-20
The synthesis of compound III-20 was performed according to compound III-1, using 4,5-dichlorothiophene-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 78 mg, 73% (last step) ESI-MS: 649.3 / 651.3 / 653.3 [M+H]+
25 Preparation of compound III-21
The synthesis of compound III-21 was performed according to compound III-1, using (S)-1-acetylpyrrolidine-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 114 mg, 86% (last step) ESI-MS: 610.4 [M+H]+ 26 Preparation of compound III-22
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin-3- ylamino)-6-(1-methyl-1H-1,2,3-triazole-5-carboxamido)-7-oxohept-2-enoate Chemical Formula: C29H37N7O6 Exact Mass: 579.28 Molecular Weight: 579.65 The synthesis of compound III-22 was performed according to compound III-1, using 1- methyl-1H-1,2,3-triazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid in the final step. Yield: 45 mg, 59% (last step) ESI-MS: 580.4 [M+H]+
27 Preparation of compound III-23
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-7-oxo-6-(2H-tetrazole-5-carboxamido)hept-2-enoate Chemical Formula: C27H34N8O6 Exact Mass: 566.26 Molecular Weight: 566.61 The synthesis of compound III-23 was performed according to compound III-1, using 2H-tetrazole-5-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 42 mg, 57% (last step) ESI-MS: 567.4 [M+H]+ 28 Preparation of compound III-24
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-7-oxo-6-(pyrazine-2-carboxamido)hept-2-enoate Chemical Formula: C30H36N6O6 Exact Mass: 576.27 Molecular Weight: 576.64 The synthesis of compound III-24 was performed according to compound III-1, using pyrazine-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 54 mg, 68% (last step) ESI-MS: 577.3 [M+H]+
29 Preparation of compound III-25
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-6-((S)-1-methylpyrrolidine-2-carboxamido)-7-oxohept-2-enoate Chemical Formula: C31H43N5O6 Exact Mass: 581.32 Molecular Weight: 581.70 The synthesis of compound III-25 was performed according to compound III-1, using (S)-1-methylpyrrolidine-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 85 mg, 79% (last step) ESI-MS: 582.4 [M+H]+ 30 Preparation of compound III-26
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-7-oxo-6-((S)-pyrrolidine-3-carboxamido)hept-2-enoate Chemical Formula: C30H41N5O6 Exact Mass: 567.31 Molecular Weight: 567.68 The synthesis of compound III-26 was performed according to compound III-1, using (S)-1-Boc-pyrrolidine-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 78 mg, 93% (last step) ESI-MS: 568.4 [M+H]+
31 Preparation of compound III-27
(S,E)-methyl 6-((2S,4S)-4-bromopyrrolidine-2-carboxamido)-7-(1-(2-(2-adamantylamino)- 2-oxoethyl)-2-oxo-1,2-dihydropyridin-3-ylamino)-7-oxohept-2-enoate Chemical Formula: C30H40BrN5O6 Exact Mass: 645.22 Molecular Weight: 646.57 The synthesis of compound III-27 was performed according to compound III-1, using (2S,4S)-1-Boc-4-bromopyrrolidine-2-carboxylic acid instead of 1-methyl-1H-imidazole-5- carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 56 mg, 89% (last step) ESI-MS: 646.3 / 648.3 [M+H]+ 32 Preparation of compound III-28
The synthesis of compound III-28 was performed according to compound III-1, using 1- Boc-imidazole-4-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 45 mg, 86% (last step) ESI-MS: 565.3 [M+H]+
33 Preparation of compound III-29
The synthesis of compound III-29 was performed according to compound III-1, using (S)-1-Boc-piperidine-2-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 108 mg, 94% (last step) ESI-MS: 582.4 [M+H]+ 34 Preparation of compound III-30
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-7-oxo-6-((R)-piperidine-3-carboxamido)hept-2-enoate Chemical Formula: C31H43N5O6 Exact Mass: 581.32 Molecular Weight: 581.70 The synthesis of compound III-30 was performed according to compound III-1, using (R)-1-Boc-piperidine-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 68 mg, 87% (last step) ESI-MS: 582.4 [M+H]+
35 Preparation of compound III-31
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-6-((R)-morpholine-3-carboxamido)-7-oxohept-2-enoate Chemical Formula: C30H41N5O7 Exact Mass: 583.30 Molecular Weight: 583.68 The synthesis of compound III-31 was performed according to compound III-1, using (R)-4-Boc-morpholine-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid. The final product was obtained by deprotection (DCM/TFA) as described above and purified by HPLC. Yield: 73 mg, 90% (last step) ESI-MS: 584.4 [M+H]+ 36 Preparation of compound III-32
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-7-oxo-6-(quinuclidine-3-carboxamido)hept-2-enoate Chemical Formula: C33H45N5O6 Exact Mass: 607.34 Molecular Weight: 607.74 The synthesis of compound III-32 was performed according to compound III-1, using quinuclidine-3-carboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 23 mg, 71% (last step) ESI-MS: 608.4 [M+H]+
37 Preparation of compound III-33
The synthesis of compound III-33 was performed according to compound III-1, using mono-methyl 5-nitroisophthalate instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 68 mg, 86% (last step) ESI-MS: 678.3 [M+H]+ 38 Preparation of compound III-34
(S,E)-methyl 7-(1-(2-(2-adamantylamino)-2-oxoethyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-6-(5-nitronicotinamido)-7-oxohept-2-enoate Chemical Formula: C31H36N6O8 Exact Mass: 620.26 Molecular Weight: 620.65 The synthesis of compound III-34 was performed according to compound III-1, using 5- nitronicotinic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 54 mg, 75% (last step) ESI-MS: 621.3 [M+H]+
The synthesis of compound III-35 was performed according to compound III-1, using 3,5-pyridinedicarboxylic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 28 mg, 63% (last step) ESI-MS: 620.3 [M+H]+ 40 Preparation of compound III-36
The synthesis of compound III-36 was performed according to compound III-1, using 5- (methoxycarbonyl)nicotinic acid instead of 1-methyl-1H-imidazole-5-carboxylic acid in the final step. Yield: 48 mg, 77% (last step) ESI-MS: 634.3 [M+H]+
41 Preparation of compound III-37
The synthesis of compound III-37 was performed according to compound III-2, using N-methyl-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 42 mg, 47% (last step) ESI-MS: 643.4 [M+H]+ 42 Preparation of compound III-38
The synthesis of compound III-38 was performed according to compound III-2, using 5- hydroxy-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 35 mg, 24% (last step) ESI-MS: 645.4 [M+H]+
43 Preparation of compound III-39
The synthesis of compound IIII-39 was performed according to compound IIII-2, using 5-fluoro-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 64 mg, 68% (last step) ESI-MS: 647.4 [M+H]+ 44 Preparation of compound III-40
The synthesis of compound III-40 was performed according to compound III-2, using 5- chloro-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 32 mg, 27% (last step) ESI-MS: 663.3 / 665.3 [M+H]+
45 Preparation of compound III-41
The synthesis of compound III-41 was performed according to compound III-2, using 5- bromo-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 41 mg, 57% (last step) ESI-MS: 707.3 / 709.3 [M+H]+ 46 Preparation of compound III-42
The synthesis of compound III-42 was performed according to compound III-2, using 5- methyl-2-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 51 mg, 47% (last step) ESI-MS: 643.4 [M+H]+
47 Preparation of compound III-43
The synthesis of compound III-43 was performed according to compound III-2, using 2- aminoadamantane-2-carbonitrile instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 36 mg, 52% (last step) ESI-MS: 654.4 [M+H]+ 48 Preparation of compound III-44
The synthesis of compound III-44 was performed according to compound III-2, using 2- methyl 2-aminoadamantane-2-carboxylate instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 49 mg, 68% (last step) ESI-MS: 687.4 [M+H]+
49 Preparation of compound III-45
The synthesis of compound III-45 was performed according to compound III-2, using 1- adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 214 mg, 77% (last step) ESI-MS: 629.4 [M+H]+ 50 Preparation of compound III-46
The synthesis of compound III-46 was performed according to compound III-2, using 3,5-dimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 67 mg, 77% (last step) ESI-MS: 657.4 [M+H]+
51 Preparation of compound III-47
The synthesis of compound III-47 was performed according to compound III-2, using N- methyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 36 mg, 41% (last step) ESI-MS: 643.4 [M+H]+ 52 Preparation of compound III-48
The synthesis of compound III-48 was performed according to compound III-2, using 3- ethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 78 mg, 54% (last step) ESI-MS: 657.4 [M+H]+
The synthesis of compound III-49 was performed according to compound III-2, using 3- trifluoromethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 29 mg, 45% (last step) ESI-MS: 697.4 [M+H]+ 54 Preparation of compound III-50
The synthesis of compound III-50 was performed according to compound III-2, using 3- hydroxy-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 23 mg, 37% (last step) ESI-MS: 645.4 [M+H]+
55 Preparation of compound III-51
The synthesis of compound III-51 was performed according to compound III-2, using 3- fluoro-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 56 mg, 62% (last step) ESI-MS: 647.4 [M+H]+ 56 Preparation of compound III-52
The synthesis of compound III-52 was performed according to compound III-2, using 3- chloro-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 24 mg, 32% (last step) ESI-MS: 663.3 / 665.3 [M+H]+
57 Preparation of compound III-53
The synthesis of compound III-53 was performed according to compound III-2, using 3- bromo-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 25 mg, 42% (last step) ESI-MS: 707.3 / 709.3 [M+H]+ 58 Preparation of compound III-54
The synthesis of compound III-54 was performed according to compound III-2, using methyl 3-aminoadamantane-1-carboxylate instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 38 mg, 52% (last step) ESI-MS: 687.4 [M+H]+
59 Preparation of compound III-55
The synthesis of compound III-55 was performed according to compound III-2, using 4,4-difluoro-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 11 mg, 36% (last step) ESI-MS: 665.4 [M+H]+ 60 Preparation of compound III-56
The synthesis of compound III-56 was performed according to compound III-2, using 1- adamantanemethylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 47 mg, 68% (last step) ESI-MS: 643.4 [M+H]+
61 Preparation of compound III-57
The synthesis of compound III-57 was performed according to compound III-2, using 1- rimantadine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 23 mg, 35% (last step) ESI-MS: 644.4 [M+H]+ 62 Preparation of compound III-58
The synthesis of compound III-58 was performed according to compound III-1, using (±)-endo-2-norbornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 36 mg, 53% (last step) ESI-MS: 539.4 [M+H]+
63 Preparation of compound III-59
The synthesis of compound III-59 was performed according to compound III-2, using (±)-endo-2-norbornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 56 mg, 69% (last step) ESI-MS: 589.4 [M+H]+ 64 Preparation of compound III-60
The synthesis of compound III-60 was performed according to compound III-1, using (R)-(+)-bornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 25 mg, 49% (last step) ESI-MS: 581.5 [M+H]+
65 Preparation of compound III-61
The synthesis of compound III-61 was performed according to compound III-2, using (R)-(+)-bornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 42 mg, 63% (last step) ESI-MS: 631.5 [M+H]+ 66 Preparation of compound III-62
The synthesis of compound III-62 was performed according to compound III-1, using exo-2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 56 mg, 64% (last step) ESI-MS: 539.4 [M+H]+
67 Preparation of compound III-63
(S,E)-methyl 7-(1-(2-((1R,2R,4S)-bicyclo[2.2.1]heptan-2-ylamino)-2-oxoethyl)-2- oxo-1,2-dihydropyridin-3-ylamino)-6-(3-methylbenzofuran-2-carboxamido)-7- oxohept-2-enoate Chemical Formula: C32H36N4O7 Exact Mass: 588.26 Molecular Weight: 588.65 The synthesis of compound III-63 was performed according to compound III-2, using exo-2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 78 mg, 71% (last step) ESI-MS: 589.4 [M+H]+ 68 Preparation of compound III-64
The synthesis of compound III-64 was performed according to compound III-2, using bicyclo[2.2.1]heptan-1-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 27 mg, 52% (last step) ESI-MS: 589.4 [M+H]+
69 Preparation of compound III-65
The synthesis of compound III-65 was performed according to compound III-2, using bicyclo[2.2.1]heptan-7-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 52 mg, 75% (last step) ESI-MS: 589.4 [M+H]+ 70 Preparation of compound III-66
The synthesis of compound III-66 was performed according to compound III-2, using bicyclo[2.2.1]hept-5-en-2-amine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 36 mg, 54% (last step) ESI-MS: 587.4 [M+H]+
71 Preparation of compound III-67
The synthesis of compound III-67 was performed according to compound III-2, using bicyclo[2.2.2]oct-2-ylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 42 mg, 51% (last step) ESI-MS: 603.4 [M+H]+ 72 Preparation of compound III-68
The synthesis of compound III-68 was performed according to compound III-2, using (R)-(−)-isobornylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 26 mg, 56% (last step) ESI-MS: 631.5 [M+H]+
73 Preparation of compound III-69
(S,E)-methyl 6-(3-methylbenzofuran-2-carboxamido)-7-oxo-7-(2-oxo-1-(2-oxo-2-((1R,2R,3R,5S)-2,6,6- trimethylbicyclo[3.1.1]heptan-3-ylamino)ethyl)-1,2-dihydropyridin-3-ylamino)hept-2-enoate Chemical Formula: C35H42N4O7 Exact Mass: 630.31 Molecular Weight: 630.73 The synthesis of compound III-69 was performed according to compound III-2, using (1R,2R,3R,5S)-(−)-isopinocampheylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 15 mg, 48% (last step) ESI-MS: 631.5 [M+H]+ 74 Preparation of compound III-70
The synthesis of compound III-70 was performed according to compound III-2, using (1S,2S,3S,5R)-(+)-isopinocampheylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 21 mg, 58% (last step) ESI-MS: 631.5 [M+H]+
75 Preparation of compound III-71
The synthesis of compound III-71 was performed according to compound III-2, using (−)-cis-myrtanylamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 12 mg, 45% (last step) ESI-MS: 631.5 [M+H]+ 76 Preparation of compound III-72
The synthesis of compound III-72 was performed according to compound III-2, using 3- amino-4-homoisotwistane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 23 mg, 59% (last step) ESI-MS: 643.5 [M+H]+
77 Preparation of compound III-73
The synthesis of compound III-73 was performed according to compound III-2, using 1- aminodiamantane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 26 mg, 62% (last step) ESI-MS: 681.5 [M+H]+ 78 Preparation of compound III-74
The synthesis of compound III-74 was performed according to compound III-2, using 4- aminodiamantane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 17 mg, 53% (last step) ESI-MS: 681.5 [M+H]+
Scheme III-4
79 Preparation of ZED4684
2.5 mL (24.3 mmol) of 2-chloro-N,N-dimethylacetamide and 4.2 mL (1 eq) of triethyl phosphite were stirred at 160°C for 8 h. The mixture was purified by HPLC. Yield: 2.50 g, 46% ESI-MS: 224.4 [M+H]+
80 Preparation of ZED4688
500 mg (2.24 mmol) of ZED4684 were dissolved in 16 mL THF. At 0°C, 251 mg (2.24 mmol) of potassium tert-butoxide were added. After 30 min, 723 mg (1.87 mmol) of the aldehyde (S)-tert-butyl 2-(bis(tert-butoxycarbonyl)amino)-5-oxopentanoate (ZED721) in 16 mL THF were added and the mixture was stirred at 0°C for 1.5 h before being quenched with water (16 mL, 0°C). After extraction with EtOAc (2 x 32 mL), the combined organic phases were washed with brine (15 mL), dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 659 mg, 77% ESI-MS: 457.5 [M+H]+ 81 Preparation of ZED4690
659 mg of ZED4688 (1.44 mmol) were dissolved in 20 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 10 ml DMF and 245 µl DIPEA (2 eq). 310 mg (1 eq) of N-(tert- butoxycarbonyloxy)succinimide were added and the reaction was stirred at room temperature overnight. The solvent was evaporated and the residue was dissolved in ethyl acetate and washed with twice with each citric acid solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 242 mg, 56% ESI-MS: 301.5 [M+H]+
82 Preparation
242 mg (0.81 mmol) of ZED4688, 308 mg (1 eq) HATU and 244 mg (1 eq) ZED3906 were dissolved in 10 mL DMF and 276 µL DIPEA (2 eq) and stirred at 45°C overnight. The solvent was evaporated; the residue was dissolved in 50 mL EtOAc and washed twice with each 15 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 288 mg, 61% ESI-MS: 584.4 [M+H]+ 83 Preparation of compound III-75
100 mg (0.17 mmol) of ZED4692 were dissolved in 6 ml DCM/TFA (1:1) and stirred at room temperature for 1 h. The solvent was evaporated, and the residue was dissolved in 15 ml DMF and 58 µl DIPEA (2 eq). 30 mg (1 eq) of 3-methylbenzo[b]furan-2- carboxylic acid and 65 mg (1 eq) of HATU were added, and the reaction was stirred at room temperature overnight. The solvent was evaporated; the residue was purified by HPLC. Yield: 78 mg, 71% ESI-MS: 642.5 [M+H]+
84 Preparation of compound III-76
The synthesis of compound III-76 was performed according to compound III-75, using 1-methyl-1H-imidazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 70 mg, 69% (last step) ESI-MS: 592.5 [M+H]+ 85 Preparation of compound III-77
The synthesis of compound III-77 was performed according to compound III-75, using 3,5-dimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 45 mg, 57% (last step) ESI-MS: 670.5 [M+H]+
86 Preparation of compound ZED4893
500 mg (3.57 mmol) of 2-hydroxy-3-nitropyridine and 818 mg (1 eq) of 1- (bromomethyl)adamantane were dissolved in 10 mL DMF and 1.24 mL DIPEA (2 eq) and stirred at room temperature overnight. The solvent was evaporated; the residue was dissolved in 30 mL EtOAc and washed twice with each 10 mL citric acid solution (10%), NaHCO3 solution (10%) and brine. The organic phase was dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by HPLC. Yield: 484 mg, 47% ESI-MS: 289.3 [M+H]+ 87 Preparation of compound ZED4894
484 mg (1.68 mmol) of ZED4893 were suspended in 30 mL MeOH before 50 mg of palladium (10%) on activated carbon (unreduced) were added. The suspension was stirred for 3 h at room temperature under an atmosphere of hydrogen. The catalyst was filtered, and the solvent was evaporated. Yield: 339 mg, 78% ESI-MS: 259.4 [M+H]+
88 Preparation of compound III-78
The synthesis of compound III-78 was performed according to compound III-1, using ZED4894 instead of ZED3906 in step 5 (according to ZED3907). Yield: 43 mg, 59% (last step) ESI-MS: 536.4 [M+H]+ 89 Preparation of compound III-79
The synthesis of compound III-79 was performed according to compound III-2, using ZED4894 instead of ZED3906 in step 5 (according to ZED3907). Yield: 56 mg, 69% (last step) ESI-MS: 586.4 [M+H]+
90 Preparation of compound III-80
The synthesis of compound III-80 was performed according to compound III-79, using 3-(bromomethyl)-1-adamantanol instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 29 mg, 51% (last step) ESI-MS: 602.4 [M+H]+ 91 Preparation of compound III-81
(6S,E)-methyl 7-(1-((3-bromo-1-adamantyl)methyl)-2-oxo-1,2-dihydropyridin- 3-ylamino)-6-(3-methylbenzofuran-2-carboxamido)-7-oxohept-2-enoate Chemical Formula: C34H38BrN3O6 Exact Mass: 663.19 Molecular Weight: 664.59 The synthesis of compound III-81 was performed according to compound III-79, using 1-bromo-3-(bromomethyl)adamantane instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 37 mg, 61% (last step) ESI-MS: 664.3 / 666.3 [M+H]+
92 Preparation of compound III-82
The synthesis of compound III-82 was performed according to compound III-79, using 2-(bromomethyl)adamantane instead of 1-(bromomethyl)adamantane (according to ZED4893). Yield: 58 mg, 77% (last step) ESI-MS: 586.4 [M+H]+ 93 Preparation of compound III-83
The synthesis of compound III-83 was performed according to compound III-1, using nicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 59 mg, 79% (last step) ESI-MS: 576.4 [M+H]+
94 Preparation of compound III-84
The synthesis of compound III-84 was performed according to compound III-1, using isonicotinic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 73 mg, 85% (last step) ESI-MS: 576.4 [M+H]+ 95 Preparation of compound III-85
The synthesis of compound III-85 was performed according to compound III-1, using pyridazine-4-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 54 mg, 78% (last step) ESI-MS: 577.4 [M+H]+
96 Preparation of compound III-86
The synthesis of compound III-86 was performed according to compound III-1, using pyridazine-3-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 47 mg, 82% (last step) ESI-MS: 577.4 [M+H]+ 97 Preparation of compound III-87
The synthesis of compound III-87 was performed according to compound III-1, using 1- adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 117 mg, 78% (last step) ESI-MS: 579.5 [M+H]+
98 Preparation of compound III-88
The synthesis of compound III-88 was performed according to compound III-1, using 3,5-dimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 132 mg, 83% (last step) ESI-MS: 607.5 [M+H]+ 99 Preparation of compound III-89
The synthesis of compound III-89 was performed according to compound III-2, using (carbethoxyethylidene)triphenylphosphorane instead of (carbomethoxymethylene) triphenylphosphorane (according to ZED755). Yield: 57 mg, 85% (last step) ESI-MS: 643.5 [M+H]+
100 Preparation of compound III-90
The synthesis of compound III-90 was performed according to compound III-2, using diethyl (methanesulfonylmethyl)phosphonate instead of (carbomethoxymethylene)triphenylphosphorane (according to ZED755). Yield: 79 mg, 72% (last step) ESI-MS: 649.4 [M+H]+ 101 Preparation of compound III-91
The synthesis of compound III-91 was performed according to compound III-1, using 3,5,7-trimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 41 mg, 69% (last step) ESI-MS: 621.5 [M+H]+
102 Preparation of compound III-92
The synthesis of compound III-92 was performed according to compound III-2, using 3,5,7-trimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 67 mg, 75% (last step) ESI-MS: 671.5 [M+H]+ 103 Preparation of compound III-93
The synthesis of compound III-93 was performed according to compound III-22, using 3,5,7-trimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 34 mg, 68% (last step) ESI-MS: 622.5 [M+H]+
104 Preparation of compound III-94
The synthesis of compound III-94 was performed according to compound III-13, using 3,5,7-trimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 69 mg, 88% (last step) ESI-MS: 691.3 / 693.3 [M+H]+ 105 Preparation of compound III-95
The synthesis of compound III-95 was performed according to compound III-14, using 3,5,7-trimethyl-1-adamantanamine instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 35 mg, 64% (last step) ESI-MS: 706.4 [M+H]+
106 Preparation of compound III-96
The synthesis of compound III-96 was performed according to compound III-22, using exo-2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 24 mg, 64% (last step) ESI-MS: 540.4 [M+H]+ 107 Preparation of compound III-97
The synthesis of compound III-97 was performed according to compound III-13, using exo-2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 78 mg, 84% (last step) ESI-MS: 609.3 / 611.3 [M+H]+
108 Preparation of compound III-98
The synthesis of compound III-98 was performed according to compound III-14, using exo-2-aminonorbornane instead of 2-adamantanamine in step 2 (preparation of compound ZED3905). Yield: 48 mg, 68% (last step) ESI-MS: 624.3 [M+H]+ 109 Preparation of compound III-99
The synthesis of compound III-99 was performed according to compound III-89, using 1-methyl-1H-imidazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 68 mg, 79% (last step) ESI-MS: 593.5 [M+H]+
110 Preparation of compound III-100
The synthesis of compound III-100 was performed according to compound III-90, using 1-methyl-1H-imidazole-5-carboxylic acid instead of 3-methylbenzo[b]furan-2-carboxylic acid in the final step. Yield: 46 mg, 73% (last step) ESI-MS: 599.4 [M+H]+
Biological Examples Example B-1. Inhibitory effect of the compounds according to the invention Transglutaminase assay For the determination of potency of inhibitors against tissue transglutaminase, the incorporation of dansylcadaverine into dimethylcasein (Zedira product T036, Lorand et al., Anal Biochem, 1971, 44:221-31) was measured using recombinant human transglutaminase 2 (Zedira Product T022). The tissue transglutaminase is diluted in buffer (50 mM Tris-HCl, 7.5 mM CaCl2, 150 mM NaCl, pH = 7.4). The final concentration of TG2 in the assay is 10 nM. A 10 mM inhibitor stock solution is prepared in DMSO, and from this a serial 1:2-fold dilution series is prepared also in DMSO. Each of the initial dilutions is subsequently diluted 1:50-fold with buffer (50 mM Tris-HCl, 7.5 mM CaCl2, 150 mM NaCl, pH = 7.4) to yield the final working dilutions containing 2% (v/v) DMSO. 15 µl of inhibitor working dilution are added per well of a 96 well microtiter plate. As control, 15 µl of a 2% (v/v) DMSO solution prepared using the buffer mentioned above are added per well. Immediately before starting the assay, 600 µl transglutaminase working solution are added to 11.4 ml assay buffer (50 mM Tris-HCl, 10 mM CaCl2, 10 mM glutathione, 2.5% glycerol, 16.7 µM dansylcadaverine, 4 µM N,N-dimethylcasein, 200 mM NaCl, pH = 8.0).285 µl of this reaction mix are added per well containing the inhibitor. Increase in fluorescence is measured using λex = 330 nm and λem = 500 nm at 37°C for 30 min. A slope of the increase in fluorescence between 20 and 30 min is calculated for determination of the IC50 value (inhibitor concentration at which 50% of the initial activity is blocked). Analysis of enzymatic activity is performed by calculation of the slope of an increase in fluorescence intensity. IC50 values are calculated by plotting the enzymatic activity (as percentage from control containing 2% DMSO instead of inhibitor) against the inhibitor concentration. IC50 is defined as the inhibitor concentration blocking 50 % of initial enzyme activity. The inhibitory activity of the inventive compounds in regard to tissue transglutaminase (TG2) is shown in the following tables 1, 2 and 3 using IC50-values.
Table 1. efficacy of reversible TG2 inhibitors A: IC50 < 150 nM, B: 150 nM ≤ IC50 < 600 nM, C: IC50 ≥ 600 nM
Table 2. efficacy of reversible TG2 inhibitors A: IC50 < 40 nM, B: 40 nM ≤ IC50 < 400 nM, C: IC50 ≥ 400 nM
Table 3. efficacy of irreversible TG2 inhibitors A: IC50 < 25 nM, B: 25 nM < IC50 < 250 nM, C: IC50 ≥ 250 nM
Example B-2. logD values of the inventive compounds In order to classify the inventive compounds according to their lipophilicity, LogD values (distribution coefficient) were determined by means of the well-established shake flask method, measuring the partition of a compound between an octanol and phosphate- buffered saline (PBS, pH 7.4) by HPLC. Compounds with a moderate lipophilicity (LogD values from 0 to 3) are usually advantaged for oral absorption, being in balance between solubility and permeability. However, sophisticated formulation of a compound might improve oral bioavailability for highly lipophilic compounds. Table 4. logD values of reversible TG2 inhibitors A: logD < 1, B: 1 ≤ logD < 3, C: logD ≥ 3
Table 6. logD values of irreversible TG2 inhibitors A: logD < 1, B: 1 ≤ logD < 3, C: logD ≥ 3
Example B-3. Caco-2 permeability assay of the inventive compounds Permeability coefficients (Papp values) were obtained from Caco-2 barrier studies predicting oral/intestinal bioavailability of the tested compounds. The assays were performed by using CacoReadyTM ready-to-use kits from ReadyCell according to the manufacturers protocol. It is considered that compounds bearing P values ab -6 app ove 1x10 cm/s are classified as permeable whereas compounds bearing P valu -6 app es below 1x10 cm/s are classified as not permeable. Table 7. Caco2 peremability assay of reversible TG2 inhibitors A: P < 1x10-6 cm/s, B: -6 app Papp ≥ 1x10 cm/s
Table 8. Caco2 peremability assay of reversible TG2 inhibitors A: P < 1x10-6 c -6 app m/s, B: Papp ≥ 1x10 cm/s
Claims
CLAIMS 1. A compound of the general formula (I):
wherein L represents –L1– or –L1-L2–; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–;
, R2 represents
,
,
,
wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re; Ra, Rb, Rc, Rd, and Re represents independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, or –NHSO2CH2CF3; R4 represents –R5, –OR5 or –NR6R7; R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2,
–cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo-C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, or –CH2CH2OCH2CH3; R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, or –CH2CH2N(CH3)2,
or –NR6R7 represents ,
R8, R9, R10, R11 , R12 , R13, and R14 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo-C3H5, –CHO, –COCH3, –COCF3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOH, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –OOC–CH3, –OOC–CF3, –OOC–C2H5, –OOC–C3H7, –OOC–CH(CH3)2, –OOC–C(CH3)3, –NH2, –NHCH3, –NHC2H5, –NHC3H7, –NHCH(CH3)2, –NHC(CH3)3, –N(CH3)2, –N(C2H5)2, –N(C3H7)2, –N[CH(CH3)2]2, –N[C(CH3)3]2, –NHCOCH3, –NHCOCF3, –NHCOC2H5, –NHCOC3H7, –NHCOCH(CH3)2, –NHCOC(CH3)3, –CONH2, –CONHCH3, –CONHC2H5, –CONHC3H7, –CONHCH(CH3)2, –CONH ^cyclo-C3H5, –CONHC(CH3)3, –CON(CH3)2, –CON(C2H5)2, –CON(C3H7)2, –CON[CH(CH3)2]2, –CON[C(CH3)3]2, –SO2NH2, –SO2NHCH3, –SO2NHC2H5, –SO2NHC3H7, –SO2NHCH(CH3)2, –SO2NH ^cyclo-C3H5, –SO2NHC(CH3)3, –SO2N(CH3)2, –SO2N(C2H5)2,
or R8 and R9 or R9 and R10 can form together one of the following five- membered or six-membered rings: ,
or R12 and R13 or R13 and R14 can form together one of the following five- membered or six-membered rings;
RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, 3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph,
–SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, –SO2 ^cyclo ^C3H5, or –SO2C(CH3)3; RN1 represents –H, –CH3, or –CH2CH3; or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof.
2. The compound according to Claim 1, wherein
wherein L represents –L1–L2– ; L1 represents –CH2CO–, L2 represents –NRN1–, and R3 represents 1-adamantyl; or L2 represents –NRN1CH 3 2–, and R represents 2-bicyclo[3.3.1]heptyl, and the afore-mentioned 1-adamantly and 2-bicyclo[3.1.1]heptyl residues optionally contain one or more C=C double bond(s) and/or are substituted by one or more of Ra, Rb, Rc, Rd, and Re;
;
R6 represents ^C2H5; and R8, R10, R11 , Ra, Rb, Rc, Rd, Re , RN and RN1 have the same meanings as defined in claim 1. 3. The compound according to Claim 1 or 2 represented by formula (II):
wherein L2 represents –NRN1–, and R3 represents 1-adamantyl; or L2 represents –NRN1CH 3 2–, and R represents 2-bicyclo[3.
3.1]heptyl, and the afore-mentioned 1-adamantly and 2-bicyclo[3.1.1]heptyl residues optionally contain one or more C=C double bond(s) and/or are substituted by one or more of Ra, Rb, Rc, Rd, and Re; ;
, , Ra, Rb, Rc, Rd, and Re represent independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2,
–CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, or –NHSO2CH2CF3; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2 ^cyclo-C4H7, ^CH2 ^cyclo-C5H9, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, ^CO ^cyclo ^C3H5, ^CO ^cyclo-C4H7, ^CO ^cyclo-C5H9, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, or –SO2C(CH3)3; RN1 represents –H, –CH3, or –CH2CH3; R8, R10, and R11 represent independently of each other –H, –F, –Cl, –Br, –I, –OH, ^CN, –NO2, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^cyclo-C3H5, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, –OCH3, –OC2H5, –OC3H7, –OCH(CH3)2, –OC(CH3)3, –OC4H9, –OCHF2, –OCF3, −OCH2CF3, –OC2F5, −OCH2OCH3, –O-cyclo-C3H5, –OCH2-cyclo-C3H5, –O–C2H4-cyclo- ^C(CH3)=CH2, ^CH=CH ^CH3,
^Ph, or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof.
4. The compound according to any one of claims 1 to 3, wherein the compound has any one of the formula (II-a), (II-b), (II-b1) – (II-b2), and (III-a) – (III-b ):
7. The compound according to claim 1, represented by the formula (I):
wherein L represents –L1– or –L1–L2– ; L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, –NR CH2CH2–, or –NRN1CH(CH3)–; R1 represents ;
R2 represents
,
wherein the unsubstituted bicyclic residues can be substituted with 1 to 5 of the substituents R9 – R13 and preferably with 1 to 3 of the substituents R11 – R13; R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly,
diamantyl, hexamethylenetetraminyl, and the afore-mentioned residues optionally contain one or more C=C double bond and/or are substituted one or more of Ra, Rb, Rc, Rd, and Re, and when R3 is 2-bicyclo[3.1.1]heptyl, L is not –CH N1 2CONR CH2–, and when R3 is 1-adamantyl, then L is not –CH N1 2CONR –; Ra, Rb, Rc, Rd, and Re represent independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, or –NHSO2CH2CF3; R4 represents –NR6R7; R6 and R7 represent independently of each other –H, –CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2, or –NR6R7 represents , , , or ; R5 and R8 – R14 have the meanings as defined in claim 1; RN represents –H, ^CH3, ^C2H5, ^C3H7, ^CH(CH3)2, ^C4H9, ^CH2 ^CH(CH3)2, ^CH(CH3) ^C2H5, ^C(CH3)3, ^cyclo-C3H5, ^cyclo-C4H7, ^cyclo-C5H9, ^CH2 ^cyclo ^C3H5, ^CH2F, ^CHF2, ^CF3, ^CH2Cl, ^CH2Br, ^CH2I, ^CH2 ^CH2F, ^CH2 ^CHF2, ^CH2 ^CF3, ^CH2 ^CH2Cl, ^CH2 ^CH2Br, ^CH2 ^CH2I, ^CH2 ^CH=CH2, ^CH2-C≡CH, –CHO, –COCH3, –COC2H5, –COC3H7, –COCH(CH3)2, –COC(CH3)3, –COOCH3, –COOC2H5, –COOC3H7, –COOCH(CH3)2, –COOC(CH3)3, –COOCH2Ph, –SO2CH3, –SO2CF3, –SO2C2H5, –SO2C3H7, –SO2CH(CH3)2, or –SO2C(CH3)3; RN1 represent –H, –CH3, or –CH2CH3; or a diastereomer, an enantiomer, a mixture of diastereomers, a mixture of enantiomer, a racemate, a solvate, a hydrate, or a pharmaceutically acceptable salt thereof.
9. The compound according to claim 7 or 8, wherein L1 represents –CH2–, or –CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH N1 2–, or –NR CH(CH3)–; R3 represents bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, 4- homoisotwistanyl, adamantly, or diamantyl, and the afore-mentioned residues optionally contain one or more C=C double bond(s) and/or are substituted by one or more of Ra, Rb, Rc, Rd, and Re; and when R3 is 2-bicyclo[3.1.1]heptyl, –L1-L2– is not –CH N1 2CONR CH2–,
and when R3 is 1-adamantyl, then –L1-L2– is not –CH N1 2CONR –; and Ra, Rb, Rc, Rd, Re and RN1 have the same meanings as defined in claim 7.
10. The compound according to any one of the claims 7 – 9, wherein the compound has any one of the formulae (IV-a) – (IV-l) and (V-a) – (V-d): R
12. The compound according to claim 1, wherein the compound has the formula (I):
wherein L represents –L1– or –L1–L2–;
L1 represents –CH2–, –CH2CH2–, –CH2CH2CH2–, –CH2CO–, –CH2CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH2–, –NRN1CH2CH2–, or –NRN1CH(CH3)–; R1 represents ;
R3 represents bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, bicyclo[3.2.2]nonyl, bicyclo[3.3.2]decyl, bicyclo[3.3.3]undecyl, 4-homoisotwistanyl, adamantly, diamantyl, hexamethylenetetraminyl and the afore-mentioned residues optionally contain one or more C=C double bond(s) and/or are substituted by one or more of Ra, Rb, Rc, Rd, and Re; Ra, Rb, Rc, Rd, and Re represent independently of each other –H, –F, –Cl, –Br, –CN, –OH, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CHF2, –CF3, –CH2CF3, –COCH3, –COCH2CH3, –CO2H, –CO2CH3, –CO2C2H5, –CONH2, –CONHCH3, –CON(CH3)2, –CONHC2H5, –CH2CO2H, –CH2CO2CH3, –CH2CO2C2H5, –CH2CONH2, –CH2CONHCH3, –CH2CON(CH3)2, –CH2CONHC2H5, –NHCOCH3, –NHCOC2H5, –NHCOCF3, –NHCOCH2CF3, –NHSO2CH3, –NHSO2C2H5, –NHSO2CHF2, –NHSO2CF3, or –NHSO2CH2CF3; R4 represents –R5, –OR5 or –NR6R7; R5 represents –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH2CH2CH2CH3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo-C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, or –CH2CH2OCH2CH3; R6 and R7 represent independently of each other –H, –CH3, –CH2CH3, –CH2CH2CH3, –CH(CH3)2, –CH2CH2CH2CH3, –CH2CH2CH2CH2CH3, –CH2CH(CH3)2, –C(CH3)3, –CH2CH=CH2, –CH2CH=CH(CH3), –CH2CH=C(CH3)2, –CH2CH=CHCH2CH3, –cyclo-C3H5, –cyclo-C4H7, –cyclo-C5H9, –cyclo-C6H11, –CH2–cyclo-C3H5, –CH2–cyclo-C4H7, –CH2–cyclo- C5H9, –CH2–cyclo-C6H11, –CH2–Ph, –CH2OCH3, –CH2OCH2CH3, –CH2CH2OCH3, –CH2CH2OCH2CH3, –CH2CH2NHCH3, –CH2CH2N(CH3)2,
14. The compound according to claim 12 or 13, wherein
, , L1 represents –CH2–, or –CH2CO–; L2 represents a bond, –NRN1–, –NRN1CH –, or N1 2 –NR CH(CH3)–; R3 represents bicyclo[2.2.1]heptyl, bicyclo[3.1.1]heptyl, bicyclo[2.2.2]octyl, 4- homoisotwistanyl, adamantly, or diamantyl and the afore-mentioned residues optionally contain one or more C=C double bond(s) and/or are substituted by one or more of Ra, Rb, Rc, Rd, and Re; and R5, R6, R7 , Ra, Rb, Rc, Rd, Re and RN1 have the same meanings as defined in claim 12.
15. The compound according to any one of the claims 12 – 14, wherein the compound has any one of the formulae (VI-a) – (Vl-l), (VII-a) – (VII-l), (VIII-a) – (VIIl-l), (IX-a) – (IX-d), (X-a) – (X-d), and (XI-a) – (XI-d):
19. A pharmaceutical composition comprising a compound of any one of the claims 1 – 18 as an active ingredient, together with at least one pharmaceutically acceptable carrier, excipient and/or diluent.
20. Compound according to any one of the claims 1 – 18 for use in medicine.
21. Compound according to any one of the claims 1 – 18 or the pharmaceutical composition according to claim 19 for use in the treatment or prophylaxis of autoimmune and inflammatory diseases, vascular diseases, fibrotic diseases, liver diseases, cholestatic liver diseases, cancer, neurodegenerative diseases, ocular diseases, and skin disorders.
22. Compound for use, or the pharmaceutical composition for use according to claim 21, wherein the autoimmune and inflammatory diseases comprises multiple sclerosis, celiac disease, Duhring-Brocq-disease (dermatitis herpetiformis), gluten ataxia, gluten neuropathy, diabetes, rheumatoid arthritis, Graves' disease, inflammatory bowel disease, systemic lupus erythematosus psoriasis, and gingivitis; the vascular diseases comprise atherosclerosis, thrombosis, vascular stiffness; the fibrotic diseases affecting the lung, the kidney, the liver, the skin or the gut like cystic fibrosis, kidney fibrosis and diabetic nephropathy, intestinal fibrosis, idiopathic lung fibrosis, liver fibrosis; the liver diseases like alcoholic hepatitis, alcoholic steatohepatitis, nonalcoholic steatohepatitis, non-alcoholic fatty liver disease, liver cirrhosis, autoimmune hepatitis or liver inflammation; the cholestatic liver diseases comprise primary biliary cholangitis and primary sclerosing cholangitis; the cancer comprises glioblastoma, melanoma, pancreatic cancer, renal cell carcinoma, meningioma, and breast cancer, the neurodegenerative diseases comprise Parkinson’s disease, Huntington’s disease, or Alzheimer’s disease, the ocular diseases comprise glaucoma, cataracts, macular degeneration, or uveitis; the skin disorders comprise acne, psoriasis, scarring, and skin aging.
23. Compound for use, or the pharmaceutical composition for use according to any one of the claims 21 or 22 in the treatment or prophylaxis of celiac disease.
24. A method for producing the compound of formula (Ia) according to claim 1 comprising: Step 1A: providing a compound 4a
Step 2A: performing coupling reaction of the compound 4a with a compound 5
to obtain a compound 6a
Step 3A: deprotecting an amino protecting group PG3 to obtain a compound 7a
Step 4A: performing coupling reaction of the compound 7a with a carboxylic acid (R2-CO2H 8) to obtain a compound 9a
Step 5A: performing oxidation reaction of the compound 9a to produce the compound of the formula (Ia)
wherein L, R2 , R3,and R6 have the same meanings as defined in claim 1, and PG3 is an amino protecting group; or a method for producing the compound of formula (Ib) according to claim 1 comprising: Step 1B: providing a compound 4b
Step 2B: performing coupling reaction of the compound 4b with a compound 5
to obtain a compound
Step 3B: deprotecting an amino protecting group PG3 to obtain a compound 7b
Step 4B: performing coupling reaction of the compound 7b with a carboxylic acid (R2-CO2H 8) to obtain a compound 9b
Step 5B: performing oxidation reaction of the compound 9b to produce the compound of the formula (Ib)
wherein L, R2 , R3, R6 and R7 have the same meanings as defined in claim 1, and PG3 is an amino protecting group; or a method for producing the compound of formula (Ic) according to claim 1 comprising: Step 1C: providing a compound 4c
Step 2C: performing coupling reaction of the compound 4c with a compound 5
to obtain a compound
Step 3C: deprotecting an amino protecting group PG3 to obtain a compound 7c
Step 4C: performing coupling reaction of the compound 7c with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ic)
wherein L, R2 , R3, R5 have the same meanings as defined in claim 1, and PG3 is an amino protecting group; or a method for producing the compound of the formula (Id) according to claim 1 comprising: Step 1D: providing a compound 4d
Step 2D: performing coupling reaction of the compound 4d with a compound 5
to obtain a compound 6d
6d; Step 3D: deprotecting an amino protecting group PG3 to obtain a compound 7d
7d; Step 4D: performing coupling reaction of the compound 7d with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Id)
wherein L, R2 , R3, R6, R7 have the same meanings as defined above in formula (Id), and PG3 is an amino protecting group; or a method for producing the compound of the formula (Ie) according to claim 1 comprising: Step 1E: providing a compound
Step 2E: performing coupling reaction of the compound 4e with a compound 5
to obtain a compound
Step 3E: deprotecting an amino protecting group PG3 to obtain a compound 7e
Step 4E: performing coupling reaction of the compound 7e with a carboxylic acid (R2-CO2H 8) to produce the compound of the formula (Ie)
wherein L, R2 , R3, R5 have the same meanings as defined above in formula (Ie), and PG3 is an amino protecting group.
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PCT/EP2021/086674 WO2023110138A1 (en) | 2021-12-17 | 2021-12-17 | Inhibitors of transglutaminases |
PCT/EP2022/068212 WO2023275333A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
EP22741485.1A EP4192812A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
KR1020237044976A KR20240035404A (en) | 2021-06-30 | 2022-06-30 | transglutaminase inhibitor |
IL309474A IL309474A (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
EP22741488.5A EP4192814A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
IL309476A IL309476A (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
AU2022305117A AU2022305117A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
PCT/EP2022/068216 WO2023275336A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
EP22741487.7A EP4192813A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
KR1020247003531A KR20240028466A (en) | 2021-06-30 | 2022-06-30 | transglutaminase inhibitor |
AU2022301517A AU2022301517A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
CA3166252A CA3166252A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
IL309077A IL309077A (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
AU2022303109A AU2022303109A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
CA3231322A CA3231322A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
PCT/EP2022/068217 WO2023275337A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
CA3231327A CA3231327A1 (en) | 2021-06-30 | 2022-06-30 | Inhibitors of transglutaminases |
KR1020247003631A KR20240028473A (en) | 2021-06-30 | 2022-06-30 | transglutaminase inhibitor |
CONC2024/0000832A CO2024000832A2 (en) | 2021-06-30 | 2024-01-29 | Transglutaminase inhibitors |
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US11072634B2 (en) * | 2016-12-27 | 2021-07-27 | Zedira Gmbh | Inhibitors of transglutaminases |
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US9434763B2 (en) * | 2012-07-17 | 2016-09-06 | Zedira Gmbh | Derivatives of pyridinone as inhibitors for tissue transglutaminase |
US11072634B2 (en) * | 2016-12-27 | 2021-07-27 | Zedira Gmbh | Inhibitors of transglutaminases |
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