CN103570754B - The preparation method of N (4 (base of 3 amino 1H indazoles 4) phenyl) N ' (aminomethyl phenyl of 2 fluorine 5) ureas and its intermediate - Google Patents

The preparation method of N (4 (base of 3 amino 1H indazoles 4) phenyl) N ' (aminomethyl phenyl of 2 fluorine 5) ureas and its intermediate Download PDF

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CN103570754B
CN103570754B CN201210279813.XA CN201210279813A CN103570754B CN 103570754 B CN103570754 B CN 103570754B CN 201210279813 A CN201210279813 A CN 201210279813A CN 103570754 B CN103570754 B CN 103570754B
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compound
formula
fluoro
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CN103570754A (en
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安晓霞
吕峰
闫丽
王关兴
李慧超
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Chifeng Pharmaceutical Co ltd
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Shanghai Acebright Pharmaceuticals Group Co ltd
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Abstract

The invention provides the preparation method of N (4 (base of 3 amino 1H indazoles 4) phenyl) N ' (aminomethyl phenyl of 2 fluorine 5) ureas and its intermediate.Specifically, the invention provides a kind of preparation method of Formulas I boric acid ester compound, including step:Formula III compound is reacted with formula IV compound reaction production V compounds, and Formula V compound with borane reagent, generates compound of formula I.This method has reaction convenient, and intermediate is easy to get, high income, and product purity is up to more than 98.5%, the features such as cost of material is low, is adapted to industrialized production.

Description

N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(fluoro- 5- aminomethyl phenyls of 2-) The preparation method of urea and its intermediate
Technical field
The invention belongs to pharmaceutical synthesis field, in particular it relates to a kind of N- (4- (3- amino-1 h-indazoles -4- Base) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea and its intermediate boric acid ester compound preparation method.
Background technology
Angiogenesis is the physiology course that capillary grows out from already present blood vessel network, can meet that tissue is given birth to Into when nutrition supply, maintenance for tumour or growth are most important, and therefore, angiogenesis inhibitors are considered as that cancer is controlled The effective means for the treatment of.The receptor tyrosine kinase (RTK) of blood vessel endothelium albumen plays an important roll in angiogenesis, can As antineoplastic action target spot.
Abbott has developed a series of RTK inhibitor (WO2004113304A1), including indazole, benzoisoxazole and Benzisothiazole kinase inhibitors, they can suppress all vascular endothelial growth factor receptors in nanomolar range specificity (VEGFR) and platelet growth factor acceptor (PDGFR) family's EGFR-TK (TK) is active, wherein, N- (4- (3- amino- 1H- indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea is exactly most to have one of candidate compound of DEVELOPMENT PROSPECT.
N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea (Linifanib, ABT- 869) structural formula is:
Preclinical study result shows that its antitumor activity is notable, and good pharmacokinetics is shown in different animals Matter, the multinomial clinical test of this product is currently carried out, to evaluate it to Several Kinds of Malignancy, including kidney, liver cancer, Colon and rectum The effect of cancer, breast cancer, non-small cell lung cancer and acute myeloid leukemia.
2009, Albert W.Kruger etc. were in document Org.Pro.Res.Dev.2009, disclosed in 13,1419-1425 Following synthetic route:
In the route, (one of compound i.e. of the invention to be synthesized --- the Formula IV chemical combination of midbody compound 4 is obtained Thing) used in raw material 4- amino phenyl boric acid pinacols ester 2 and the fluoro- 5- methyl phenyl ester trivalent lattice of isocyanic acid 2- it is expensive and be not easy to obtain, it is former Expect that cost is high, be not suitable for industrialized production.
In order to solve the problems, such as raw material 4- amino phenyl boric acid pinacol esters, bang dragon is waited《Chinese pharmaceutical chemistry magazine》, 22 (1), 26-28,2012.Following synthesis ABT-869 route is reported in document:
Above-mentioned route voluntarily synthesizes 4- amino phenyl boric acid pinacol esters, but to undergo the reaction of 5 steps, route length.Obtain centre The yield of body 4 only has 38% or so, so being also not suitable for industrialized production.
In summary, there is an urgent need to efficient preparation N- (4- (the 3- ammonia of low, the suitable industrialized production of development cost for this area Base -1H- indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea and similar compound technique.
The content of the invention
It is an object of the invention to provide a kind of novel preparation N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N ' - The method of (the fluoro- 5- aminomethyl phenyls of 2-) urea (ABT-869) and its intermediate, the technique solve prior art because cost of material is held high Expensive or route is long, yield low the problem of causing production cost high.
The first aspect of the present invention provides a kind of preparation method of compound of formula I, and this method comprises the following steps:
1) in the presence of a base, formula III compound is reacted with formula IV compound, forms Formula V compound;
2) in the presence of alkali and palladium catalyst, Formula V compound is reacted with borane reagent, forms compound of formula I;
It is above-mentioned it is various in,
R1 be on phenyl ring optional position one or more (such as 1,2,3,4 or 5) substituent, each R1 can it is identical or It is different and independently selected from the following group:Halogen, C1-6Alkyl, C1-6Haloalkyl or C1-6Alkoxy;
R2 and R3 independently is hydroxyl or C1-6Alkoxy, C1-6Acyloxy, or R2 and R3 collectively form substitution or not taken The C in generation1-8The epoxide of alkane two, C6-10Fragrant two epoxides, or C1-8The epoxide of cycloalkanes two;Wherein described substitution is that have one or more (such as 1-5 or 1-3) substituent that is selected from the group:C1-6Alkyl, halogen, phenyl, benzyl ,-CH2-、C1-6Alkoxy, C1-6Acyl group, C1-6Acyloxy, C1-6Alkoxy carbonyl group;
R4 is selected from the group:H、F、Cl、Br、I.
In another preference, R2 and R3 independently are hydroxyl or C1-4Alkoxy.
In another preference, R1 be two be located at phenyl ring optional position identical or different substituents, the substitution Base is selected from:F、Cl、Br、I、C1-6Alkyl;And/or
R2 and R3 collectively forms substituted or unsubstituted C2-8The epoxide of alkane two, wherein described substituted defined as described above; And/or
R4 is Cl or Br.
In another preference, during as substituent, described phenyl includes substituted or unsubstituted phenyl, the benzyl Including substituted or unsubstituted benzyl, and described substitution refers to and is selected from the group with one or more (such as 1-5 or 1-3) Substituent:C1-6Alkyl, halogen, C1-6Alkoxy, OH, NH3
In another preference, described compound of formula I is following structure:
In another preference, the alkali described in step 1) and step 2) is selected from organic base or inorganic base;
Preferably, described organic base is selected from the group:Triethylamine, diethylamine, diisopropylethylamine, pyridine or its combination; More preferably, described alkali is triethylamine or diisopropylethylamine;
In another preference, described inorganic base is selected from sodium acetate, potassium acetate, sodium dihydrogen phosphate, disodium hydrogen phosphate, phosphorus Acid dihydride potassium, dipotassium hydrogen phosphate, sodium carbonate, sodium acid carbonate, potassium carbonate, saleratus, sodium hydroxide, potassium hydroxide or its group Close.
In another preference, described alkaline reagent is selected from sodium acetate, potassium acetate, sodium acid carbonate, potassium carbonate, or its group Close.
In another preference, the alkali of step 1) and step 2) is identical.
In another preference, the mol ratio of the dosage of alkali and formula III compound is 0.5~5 in step 1):1, more preferably For 2~3.5:1.
In another preference, the mol ratio of the compound of step 1) Chinese style IV and formula III compound is 0.2~1:1, preferably 0.8~1:1.
In another preference, reaction temperature is -20~100 DEG C in step 1), and more preferably, reaction temperature is -10~50 ℃。
In another preference, the reaction time is 0.5~24 hour, more preferably 1~12 hour in step 1).
In another preference, the borane reagent described in step 2) is selected from the group:The boron of titanium dioxide two, tetramethoxy hypoboric acid Ester, tetraethoxy diborate, four n-butoxy diborates, tetraisopropoxide diborate, four positive propoxy diborates, It is duplex catechol borate, duplex pinacol borate, connection boric acid DOPCP, double [(-) pinane diol] two boron esters, double (diisopropyl-L-TARTARIC ACID diethylester) diborate, the boron ester of double (1S, 2S, 3R, 5S) (+)-pinane diols two, duplex (2- first Base -2,4-PD) borate, duplex (2,4- dimethyl -2,4-PD) borate, duplex (D- ethyl tartrates) boron Acid esters or its combination.
In another preference, the borane reagent is selected from duplex catechol borate, duplex pinacol borate, duplex (D- ethyl tartrates) borate;More preferably it is duplex pinacol borate.
In another preference, the dosage of the borane reagent is 0.8~5 with the mol ratio of the compound of formula V:1, preferably 1~ 1.5:1.
In another preference, the dosage of the alkali described in step 2) is 0.5~5 with the mol ratio of the compound of formula V:1, It is preferred that 2~3.5:1;And/or
Palladium catalyst described in step 2) is selected from 1,1 '-bis- (diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums, palladium carbon, Palladium, or its combination, preferably 1,1 '-bis- (diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums;And/or
The dosage of palladium catalyst described in step 2) is 0.01~0.2 with the mol ratio of the compound of formula V:1, be preferably 0.02~0.08:1.
In another preference, reaction temperature is 20~150 DEG C, preferably 60~100 DEG C in step 2).
In another preference, the reaction time is 0.5~24 hour, more preferably 1~12 hour in step 2).
In another preference, this method comprises the following steps:
I) in the presence of a base, the fluoro- 5- methyl phenyl esters of isocyanic acid 2- react with para-bromoaniline, form Formula VII compound;With
Ii) in atent solvent, in the presence of alkali and palladium catalyst, Formula VII compound is reacted with borane reagent, forms Formula IV Compound:
In another preference, step i) reaction temperature is -10~50 DEG C.
In another preference, step ii) reaction temperature be 60~100 DEG C.
In another preference, the alkali in step i) is diisopropylethylamine.
In another preference, step ii) in, atent solvent be DMF (DMF), dimethyl sulfoxide (DMSO), Or its combination.
In another preference, step ii) in VII compounds and the mol ratio of borane reagent, alkali, palladium catalyst be 1:0.8 ~5:0.5~5:0.01~0.2;More preferably it is 1:1~1.5:2~3.5:0.02~0.08.
In another preference, methods described also includes passing through following steps formula III compounds:
1a) in atent solvent, in the presence of a base, Formula II compound is reacted with triphosgene, shape compound of Formula III:
It is above-mentioned it is various in, R1 is one or more substituents of the optional position on phenyl ring, and each R1 may be the same or different And independently selected from the following group:Halogen, C1-6Alkyl, C1-6Haloalkyl or C1-6Alkoxy.
In another preference, step 1a) in, described alkali is organic base (such as diisopropylethylamine).
In another preference, step 1a) in, described atent solvent is organic solvent, selected from esters solvent, halogenated hydrocarbons Solvent, ether solvent, aromatic hydrocarbon solvent or its combination;More preferably, described organic solvent is ethyl acetate, dichloromethane, four Hydrogen furans, or its combination.
The second aspect of the present invention, there is provided a kind of preparation method of formula A compounds, including step:
1) in the presence of a base, formula III compound is reacted with formula IV compound, forms Formula V compound;
2) in the presence of alkali and palladium catalyst, Formula V compound is reacted with borane reagent, forms compound of formula I;
It is above-mentioned it is various in,
R1 be on phenyl ring optional position one or more substituents, each R1 may be the same or different and independently selected from The following group:Halogen, C1-6Alkyl, C1-6Haloalkyl or C1-6Alkoxy;
R2 and R3 independently is hydroxyl or C1-6Alkoxy, C1-6Acyloxy, or R2 and R3 collectively form substitution or not taken The C in generation1-8The epoxide of alkane two, C6-10Fragrant two epoxides, or C1-8The epoxide of cycloalkanes two;Wherein described substitution is selected from one or more The substituent of the following group:C1-6Alkyl, halogen, phenyl, benzyl ,-CH2-、C1-6Alkoxy, C1-6Acyl group, C1-6Acyloxy, C1-6Alcoxyl Carbonyl;
R4 is selected from the group:H, halogen;
3) compound of formula I and 3- amino -4- iodine indazole are reacted, form formula A compounds,
In formula, R isAnd X is that the one or more (such as 1,2,3,4 or 5) of optional position takes on phenyl ring Dai Ji, each R1 may be the same or different and independently selected from the following groups:Halogen, C1-6Alkyl, C1-6Haloalkyl or C1-6Alkoxy.
More preferably, X H, o-F, m-F, p-F, o-Me, m-Me, P-Me, m-Et, m-Cl, m-Br, m-CF3、m-OH、2-F- 5-Me、4-F-3-Me、3-F-Me、2-F-5-CF3、2-Cl-5-Cl、2-Me-4-Me、3-F-4-OMe、2-Br-4-Me、2-Me- 5-CF3
In another preference, described compound of formula I is Formula IV compound, and formula A compounds are ABT-869.
In the third aspect of the present invention, there is provided a kind of N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(2- Fluoro- 5- aminomethyl phenyls) urea preparation method, including step:
Formula IV compound and 3- amino -4- iodine indazole are reacted, form N- (4- (3- amino-1 h-indazole -4- bases) benzene Base)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea:
Methods described also includes:With the method formula VI compounds described in first aspect present invention.
It should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment) It can be combined with each other between each technical characteristic of body description, so as to form new or preferable technical scheme.As space is limited, exist This no longer tires out one by one states.
Embodiment
The present inventor by in-depth study extensively, develop first it is a kind of by following reaction, efficiently at low cost The technique for preparing compound of formula I:
It can be used as the intermediate of chemical synthesis by compound of formula I made from the technique, for synthetic drug.It is representational Medicine includes (but being not limited to):Indazole, benzoisoxazole and benzisothiazole kinase disclosed in WO2004113304A1 Inhibitor.
, can be inexpensive, efficient by the Formula IV intermediate by taking Formula IV intermediate (a kind of preferable compound of formula I) as an example Ground prepare compound ABT-869, thus it is especially suitable for industrialized production.Other Formulas I intermediates, pass through leaving group-B (R2) (R3) similar reaction, the formula A compound similar with ABT-869 can be prepared.
Term
As used in the present invention, term " ABT-869 ", " compound ABT-869 " or " Linifanib " are used interchangeably, all Referring to compound N-(4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea or its can pharmaceutically connect The salt received.
As used herein, term " C1-6Alkyl " refers to the straight or branched alkyl with 1-6 carbon atom, such as methyl, second Base, propyl group, isopropyl, butyl, isobutyl group, sec-butyl, the tert-butyl group or similar group.
Term " C1-6Alkoxy " refers to the straight or branched alkoxyl with 1-6 carbon atom, for example, methoxyl group, ethyoxyl, Propoxyl group, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy or similar group.
Term " C1-6Acyl group " refers to the acyl group with 1-6 carbon atom, such as formoxyl, acetyl group, propiono, isopropyl acyl Base, bytyry, isobutyryl, secondary bytyry, tertiary bytyry or similar group.
Term " C1-6Acyloxy " refers to the acyloxy with 1-6 carbon atom, such as formyloxy, acetoxyl group, propionyl oxygen Base, isopropenoxy, butyryl acyloxy, isobutyl acyloxy, secondary butyryl acyloxy, tertiary butyryl acyloxy or similar group.
Term " C1-6Alkoxy carbonyl group " refers to the straight or branched alkoxy carbonyl group with 1-6 carbon atom, such as methoxycarbonyl group, Carbethoxyl group, propylene carbonyl oxygen, butyloxycarbonyl, butoxy carbonyl, isobutyl boc, secondary butoxy carbonyl, tertbutyloxycarbonyl or similar Group.
Term " halogen " refers to fluorine, chlorine, bromine or iodine.Term " halo " refers to by identical or different one or more above-mentioned The group of halogen atom substitution, such as trifluoromethyl, pentafluoroethyl group or similar group.
Term " C1-8The epoxide of alkane two " refers to the epoxide of straight or branched alkane two with 1-8 carbon atom, such as-OC1-8Alkyl O-、-OCH2CH2O-、-OCH2CH2CH2O-、-OCH2CH(CH3)CH2O-、-OCH2CH(CH3)CH(CH3)CH2O-、-OCH2C (CH3)2CH2O- or similar groups.
Term " C1-8The epoxide of cycloalkanes two " refers to the epoxide of cycloalkanes two or the epoxide of bridged ring alkane two with 1-8 carbon atom, and such as 1,2- Dioxy butylcyclohexane, 1,3- dioxies butylcyclohexane, the epoxide of (-) pinane two(1S,2S,3R,5S) The epoxide of (+)-pinane twoOr similar group.
Term " phenyl " includes unsubstituted and substitution phenyl, wherein substitution refers to one or more hydrogen atom quilts on phenyl ring It is substituted for halogen atom, C1-6Alkyl, C1-6Alkoxy or similar group.
Term " C6-10Fragrant two epoxides " refer to the epoxide of virtue two with 6-10 carbon atom, such as the epoxide benzene of 1,2- bis-, 1,2- bis- Epoxide naphthalene or similar group.
Term " BTC " refers to triphosgene, molecular formula C3H6O3
Term " esters solvent " refers to the based organic solvent with 2-20 (preferably 2-10) carbon atoms, such as acetic acid Methyl esters, ethyl acetate, propyl acetate, butyl acetate, isopropyl acetate, isobutyl acetate, pentyl acetate, hexyl acetate, acetic acid Heptyl ester, decyl acetate, ethylene acetate, or similar solvent.
Term " ether solvent " refers to the straight or branched alkoxyl with 2-20 (preferably 2-10) carbon atoms, such as Ether, propyl ether, isopropyl ether, ethyl n-butyl ether, di-n-butyl ether, diamyl ether, tetrahydrofuran, oxirane, expoxy propane, 1,3- Dioxolane or similar solvent.
Preparation method
Compound or compound ABT-869 can be made by following method shown in the logical formula (I) of the present invention.But it should manage Solution, hereinafter given method actual conditions, such as the amount of reactant, solvent, alkali, compound used therefor, reaction temperature, reaction Required time etc., it is exemplary not from the limited effect.The compounds of this invention will optionally can also describe in this manual Or various synthetic methods known in the art combine and be easily made, such combination can be by art of the present invention Technical staff readily carry out.
In the preparation process in accordance with the present invention, respectively react generally in atent solvent, reaction temperature is -20 DEG C to reflux temperature Carried out under (preferably -10 DEG C to 100 DEG C).Reaction time is usually 0.1-24 hours, preferably 0.5-18 hours.
The preparation of compound of formula I
Compound of formula I can be prepared as follows:
In the presence of a base, formula III compound is reacted with formula IV compound, forms Formula V compound;
Then, in the presence of alkali and palladium catalyst, Formula V compound is reacted with borane reagent, forms compound of formula I.
Starting materials of formulae III compounds and formula IV compound can be prepared by a conventional method or be commercially available.
In the present invention, representational borane reagent includes (but being not limited to):The boron of titanium dioxide two, tetramethoxy hypoboric acid Ester, tetraethoxy diborate, four n-butoxy diborates, tetraisopropoxide diborate, four positive propoxy diborates, It is duplex catechol borate, duplex pinacol borate, connection boric acid DOPCP, double [(-) pinane diol] two boron esters, double (diisopropyl-L-TARTARIC ACID diethylester) diborate, the boron ester of double (1S, 2S, 3R, 5S) (+)-pinane diols two, duplex (2- first Base -2,4-PD) borate, duplex (2,4- dimethyl -2,4-PD) borate, duplex (D- ethyl tartrates) boron Acid esters or its combination.
Preferably, the borane reagent is selected from duplex catechol borate, duplex pinacol borate, duplex (D- winestones Diethyl phthalate) borate;More preferably it is duplex pinacol borate.
Compound ABT-869 preparation
Compound ABT-869 can be following to prepare by intermediate Formula IV compound:
Formula IV compound and 3- amino -4- iodine indazole are reacted, form N- (4- (3- amino-1 h-indazole -4- bases) benzene Base)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea:
Compared with prior art, the present invention has the advantage that:
1st, the inventive method can easily obtain N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(2- is fluoro- 5- aminomethyl phenyls) urea key intermediate boric acid ester compound.
2nd, method high income of the invention.
3rd, the ABT-869 of high-purity can be easily made in the inventive method, and product purity is up to more than 98%.
4th, cost of material is low, is adapted to industrialized production.
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention Rather than limitation the scope of the present invention.The experimental method of unreceipted actual conditions in the following example, generally according to conventional strip Part, or according to the condition proposed by manufacturer.Unless otherwise indicated, otherwise percentage and number are calculated by weight.
The compound 1-I of embodiment 1 preparation
Step A:
Triphosgene (8.9g, 30.0mmol) is dissolved in 100mL ethyl acetate, addition triethylamine (10.1g, 99.8mmol), -10~-5 DEG C are cooled under stirring, 2,5- dichloroanilines (8.1g, 50.0mmol) ethyl acetate is slowly added dropwise (80mL) solution, about 0.5-1 hours are added dropwise.It is added dropwise, is warming up to 50 DEG C of stirring reaction 1-2 hours.TLC detection raw material reactions Finish, be cooled to room temperature, reaction solution direct plunges into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 DEG C, para-bromoaniline (6.9g, 40.1mmol), two are added dropwise into reaction solution Ethyl acetate (50mL) solution of wopropyl ethyl amine (6.5g, 50.3mmol), about 0.5-1 hours are added dropwise.It is added dropwise, continues to control 25~30 DEG C of reaction 1-2 hours of temperature.Reaction solution is concentrated under reduced pressure half volume, 100mL water is added dropwise under stirring into system, has White solid separates out, and filtering, filter cake is dried in vacuo to obtain 1-III compound 11.6g, yield 80.4%.MS(ESI)m/z:(M+H) =361.0。
Step C:
The addition 1-III compounds (11.6g, 32.2mmol) into reaction bulb successively, the boron of titanium dioxide two (2.6g, 48.3mmol), sodium acid carbonate (6.7g, 79.8mmol) and water (100mL), stir, and add Pd (PPh3)4(1.1g, 1.0mmol).It is warming up to backflow, temperature control reaction 2-3 hours.TLC detection raw material reactions are finished, and reaction system is slowly cooled into 0 ~5 DEG C, solid is separated out, continues insulated and stirred 0.5-1 hours.Filtering, filter cake recrystallized from acetonitrile, drying obtain 1-I compounds 8.7g, yield 83.1%, HPLC detection purity 98.7%.MS(ESI)m/z:(M+H)=326.0.
The compound 2-I of embodiment 2 preparation
Step A:
Triphosgene (14.8g, 100.0mmol) is dissolved in 100mL tetrahydrofurans, addition diisopropylethylamine (13.4g, 103.7mmol), -10~-5 DEG C are cooled under stirring, 1- amino -2,4- dimethyl benzene (12.1g, 100.0mmol) is slowly added dropwise Tetrahydrofuran (120mL) solution, be added dropwise about 0.5-1 hours.It is added dropwise, is warming up to return stirring reaction 1-2 hours.TLC Detection raw material reaction finishes, and is cooled to room temperature, reaction solution direct plunges into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 DEG C, potassium carbonate (13.8g, 100.0mmol) is added, then to reaction solution Middle tetrahydrofuran (50mL) solution that para-bromoaniline (17.2g, 100.0mmol) is added dropwise, is added dropwise about 0.5-1 hours.It is added dropwise, Continue 25~30 DEG C of reaction 1-2 hours of temperature control.Reaction solution is concentrated under reduced pressure half volume, is added dropwise under stirring into system 100mL water, there is white solid precipitation.Filtering, filter cake are dried in vacuo to obtain 2-II I 25.6g, yield 80.2%.MS (ESI)m/z:(M+H)=320.2, (M+Na)=342.2.
Step C:
The addition 2-III compounds (25.6g, 80.2mmol) into reaction bulb successively, the boron of tetramethoxy two (14.0g, 96.4mmol), potassium acetate (7.9g, 80.5mmol) and methanol (200mL), stir, and add PdCl2(dppf) (5.9g, 8.0mmol).It is warming up to backflow, temperature control reaction 2-3 hours.TLC detection raw material reactions are finished, and reaction system is cooled into room temperature, 500mL water is added, with 300ml points of 3 extractions of dichloromethane, 300mL saturated common salts water washing 1 time, anhydrous sodium sulfate drying.Filter Liquid is concentrated under reduced pressure into dry that crude product 24.3g, recrystallized from acetonitrile, drying obtain 2-I compound 20.6g, yield 82.2%, HPLC inspections Survey purity 99.1%.MS(ESI)m/z:(M+H)=313.1.
The compound 3-I of embodiment 3 preparation
Step A:
The fluoro- 5- methylanilines (5.0g, 39.9mmol) of 2- are dissolved in 150mL dichloromethane, add diisopropylethylamine (6.2g, 48.0mmol).- 10~-5 DEG C are cooled under stirring, triphosgene (4.8g, 16.2mmol) dichloromethane is slowly added dropwise (100mL) solution, about 0.5-1 hours are added dropwise.It is added dropwise, is warming up to and reaction 3-4 hours are stirred at room temperature, TLC detection raw materials is anti- It should finish, reaction solution direct plunges into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 DEG C, the dropwise addition para-bromoaniline (6.9g, 40.1mmol) into reaction solution, three Dichloromethane (30mL) solution of ethamine (8.1g, 80.0mmol), about 0.5-1 hours are added dropwise.It is added dropwise, continuation temperature control 25~ 30 DEG C of reaction 1-2 hours.Obtained reaction mixture is concentrated under reduced pressure half volume, 100mL is added dropwise under stirring into system Water, there is white solid precipitation, filter, filter cake is dried in vacuo to obtain Formula VII compound 10.7g, yield 82.6%.MS(ESI)m/z: (M+H)=324.1。
Step C:
The addition Formula VII compound (10.7g, 33.1mmol) into reaction bulb successively, duplex pinacol borate (9.2g, 36.3mmol), potassium acetate (9.7g, 98.8mmol) and DMF (100mL).Stir, add PdCl2(dppf) (1.2g, 1.7mmol), 80~85 DEG C are warming up to, temperature control reaction 2-3 hours.TLC detection raw material reactions are finished, and reaction system is cooled to Room temperature, 200mL water is added, with 200ml points of 3 extractions of dichloromethane, 200mL saturated common salts water washing 1 time, anhydrous sodium sulfate is done Dry, filtrate decompression is concentrated to dryness to obtain crude product 12.5g.Recrystallized from acetonitrile, dry and obtain Formula IV compound 10.6g, yield 86.5%, HPLC detection purity is 99.2%.MS(ESI)m/z:(M+H)=371.2.
The compound 4-I of embodiment 4 preparation
Step A:
The bromo- 4- methylanilines (37.2g, 200.0mmol) of 2- are dissolved in 200mL toluene, addition pyridine (47.5g, 600.5mmol), -10~-5 DEG C are cooled under stirring, triphosgene (29.6g, 100.0mmol) toluene (150mL) is slowly added dropwise Solution, about 0.5-1 hours are added dropwise.It is added dropwise, is warming up to return stirring reaction 1-2 hours.TLC detection raw material reactions finish, Room temperature is cooled to, reaction solution direct plunges into the next step.
Step B:
Reaction solution adds potassium carbonate (41.4g, 300.0mmol) one step up, is warming up to 25~30 DEG C, and paraiodoaniline is added dropwise Toluene (400mL) solution of (39.4g, 180.0mmol), about 1-2 hours are added dropwise.It is added dropwise, it is anti-continues 25~30 DEG C of temperature control Answer 1-2 hours.Reaction solution is concentrated under reduced pressure half volume, 1000mL water is added dropwise under stirring into system, there is white solid analysis Go out.Filtering, filter cake are dried in vacuo to obtain 4-III compound 63.2g, yield 81.4%.MS(ESI)m/z:(M+H)=432.1.
Step C:
4-III compounds (63.2g, 146.6mmol), duplex catechol borate are added into reaction bulb successively (35.7g, 150.0mmol), potassium carbonate (27.6g, 200.0mmol), methanol (500mL) and water (500mL), stir, add Enter Pd (PPh3)4(8.0g).60 DEG C are warming up to, temperature control reaction 2-3 hours.TLC detection raw material reactions finish, and reaction system is cold But to 0-5 DEG C, solid is separated out, continues stirring 1 hour.Filtering, filter cake recrystallized from acetonitrile, drying obtain 4-I compounds 48.3g, yield 77.9%, HPLC detection purity is 98.5%.MS(ESI)m/z:(M+H)=424.1.
The compound 5-I of embodiment 5 preparation
Step A:
Triphosgene (5.9g, 20.0mmol) is dissolved in 100mL isopropyl acetates, addition diisopropylethylamine (6.5g, 50.3mmol), -10~-5 DEG C are cooled under stirring, the second of the fluoro- 4- aminoanisoles (7.1g, 50.0mmol) of 3- is slowly added dropwise Isopropyl propionate (50mL) solution, about 0.5-1 hours are added dropwise.It is added dropwise, is warming up to and reaction 3-4 hours are stirred at room temperature.TLC is detected Raw material reaction finishes, and reaction solution direct plunges into the next step.
Step B:
Reaction solution adds potassium carbonate (11.0g, 79.7mmol) one step up, is warming up to 25~30 DEG C, and para-bromoaniline is added dropwise Isopropyl acetate (30mL) solution of (6.9g, 40.1mmol), about 0.5-1 hours are added dropwise.It is added dropwise, continues temperature control 45~50 DEG C reaction 1-2 hours.Reaction solution is concentrated under reduced pressure half volume, 100mL water is added dropwise under stirring into system, there is white solid Separate out.Filtering, filter cake are dried in vacuo to obtain 5-II I 11.4g, yield 83.8%.MS(ESI)m/z:(M+H)=340.1.
Step C:
5-III compounds (11.4g, 33.6mmol), duplex (D- ethyl tartrates) boron are added into reaction bulb successively Acid esters (15.1g, 35.0mmol), sodium acetate (8.2g, 100.0mmol) and isopropyl acetate (200mL), stir, and add Pd(OAc)2(0.4g, 1.8mmol).90~100 DEG C are warming up to, temperature control reaction 2-3 hours.TLC detection raw material reactions finish, will Reaction system is cooled to room temperature, adds 200mL water, with 200ml points of 3 extractions of dichloromethane, 200ml saturated common salts water washing 1 It is secondary, anhydrous sodium sulfate drying.Filtrate decompression is concentrated to dryness to obtain crude product 15.2g, recrystallized from acetonitrile, and drying obtains 5-I compounds 13.1g, yield 82.1%, HPLC detection purity is 98.8%.MS(ESI)m/z:(M+H)=475.2.
The compound 6-I of embodiment 6 preparation
Step A:
Triphosgene (5.9g, 20.0mmol) is dissolved in 100mL ethyl acetate, addition triethylamine (10.1g, 99.8mmol), -10~-5 DEG C are cooled under stirring, 2- methyl -5- 5-trifluoromethylanilines (8.8g, 50.0mmol) are slowly added dropwise Ethyl acetate (80mL) solution, be added dropwise about 0.5-1 hours.It is added dropwise, is warming up to 60 DEG C of stirring reaction 1-2 hours.TLC is examined Survey raw material reaction to finish, be cooled to room temperature, reaction solution direct plunges into the next step.
Step B:
Sodium hydroxide (2.0g, 50.0mmol) is added in reaction solution one step up, 25~30 DEG C is warming up to, is added dropwise to chlorobenzene Ethyl acetate (50mL) solution of amine (5.7g, 45.0mmol), about 0.5-1h is added dropwise.It is added dropwise, continues 25~30 DEG C of temperature control React 1-2 hours.Reaction solution is concentrated under reduced pressure half volume, 100mL water is added dropwise under stirring into system, there is white solid analysis Go out.Filtering, filter cake are dried in vacuo to obtain 6-III compound 9.3g, yield 75.3%.MS(ESI)m/z:(M+H)=275.7.
Step C:
6-III compounds (9.3g, 33.9mmol), double (1S, 2S, 3R, 5S) (+)-pinanes are added into reaction bulb successively The boron ester (12.2g, 34.0mmol) of glycol two, triethylamine (10.1g, 99.8mmol) and dioxane (100mL), stir, Add Pd (PPh3)4(0.8g, 1.0mmol).It is warming up to backflow, temperature control reaction 2-3 hours.TLC detection raw material reactions finish, will Reaction system is cooled to room temperature, adds 200mL water, with 200ml points of 3 extractions of dichloromethane, 200ml saturated common salts water washing 1 It is secondary, anhydrous sodium sulfate drying.Filtrate decompression is concentrated to dryness to obtain crude product 13.5g, recrystallized from acetonitrile, and drying obtains 6-I compounds 11.3g, yield 79.7%, HPLC detection purity is 98.6%.MS(ESI)m/z:(M+H)=419.3.
The compound 7-I of embodiment 7 preparation
Step A:
Triphosgene (8.9g, 30.0mmol) is dissolved in 100mL dichloromethane, addition diisopropylethylamine (12.9g, 99.8mmol), -10~-5 DEG C are cooled under stirring, 4- methylanilines (5.4g, 50.0mmol) dichloromethane is slowly added dropwise (50mL) solution, about 0.5-1 hours are added dropwise.It is added dropwise, is warming up to and reaction 3-4 hours are stirred at room temperature.TLC detection raw material reactions Finish, reaction solution direct plunges into the next step.
Step B:
Reaction solution adds potassium carbonate (11.0g, 80.0mmol) one step up, is warming up to 25~30 DEG C, and para-bromoaniline is added dropwise Dichloromethane (30mL) solution of (6.9g, 40.0mmol), about 0.5-1 hours are added dropwise.It is added dropwise, continues 35~40 DEG C of temperature control React 1-2 hours.Reaction solution is concentrated under reduced pressure half volume, 100mL water is added dropwise under stirring into system, there is white solid analysis Go out.Filtering, filter cake are dried in vacuo to obtain 7-III compound 9.9g, yield 81.2%.MS(ESI)m/z:(M+H)=306.1.
Step C:
7-II Is (9.9g, 32.5mmol), duplex (2,4- dimethyl -2,4- penta are added into reaction bulb successively Glycol) borate (11.3g, 40.0mmol), sodium acetate (4.1g, 50.0mmol) and tetrahydrofuran (200mL), stir, Add Pd (OAc)2(0.4g, 1.6mmol).It is warming up to backflow temperature control reaction 2-3 hours.TLC detection raw material reactions finish, will be anti- Answer system to be cooled to room temperature, add 200mL water, divided 3 times with dichloromethane 200ml and extracted, 200mL saturated common salts water washing 1 time, Anhydrous sodium sulfate drying.Filtrate decompression is concentrated to dryness to obtain crude product 15.2g, recrystallized from acetonitrile, and drying obtains 7-I compound 9.6g, Yield 80.7%, HPLC detection purity is 98.9%.MS(ESI)m/z:(M+H)=367.2.
The preparation of the N- of embodiment 8 (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea
Formula IV compound (10.6g, 28.6mmol), the 3- amino -4- iodine that embodiment 3 obtains are added into reaction bulb successively Indazole (8.1g, 31.3mmol), sodium carbonate (7.6g, 71.7mmol), ethanol 100mL, water 100mL.Lower addition is stirred at room temperature PdCl2(dppf) (0.4g, 0.6mmol), it is warming up to backflow.After backflow 8 hours, decompression boils off ethanol.Second is added in residue Acetoacetic ester 150mL, 20% aqueous ammonium chloride solution 50mL, stir 30 minutes.Organic layer is separated, is washed with water 3 times, anhydrous sodium sulfate Dry.Organic layer evaporated under reduced pressure, obtained crude product dichloromethane-ethanol (10:1) recrystallize, obtain white solid 8.0g, receive Rate 74.8%, HPLC detection purity is 99.0%.MS(ESI)m/z:(M+H)=376.4.
Similarly, by the reaction of leaving away of leaving group, the formula A compounds that X is 2-Cl-5-Cl are made with compound 1-I. 2-Me-4-Me formula A compounds are made with formula 2-I compounds.3-F-4-OMe formula A compounds are made with formula 5-I compounds. After tested, these formulas A compounds have RTK inhibitory activity.
All it is incorporated as referring in this application in all documents that the present invention refers to, it is independent just as each document It is incorporated as with reference to such.In addition, it is to be understood that after the above-mentioned instruction content of the present invention has been read, those skilled in the art can To be made various changes or modifications to the present invention, these equivalent form of values equally fall within the model that the application appended claims are limited Enclose.

Claims (14)

1. a kind of preparation method of Formula IV compound, it is characterised in that this method comprises the following steps:
I) in the presence of a base, the fluoro- 5- methyl phenyl esters of isocyanic acid 2- react with para-bromoaniline, form Formula VII compound;With
Ii) in atent solvent, in the presence of alkali and palladium catalyst, Formula VII compound is reacted with borane reagent, forms Formula IV chemical combination Thing:
And step i) and step ii) described in alkali be organic base or inorganic base, wherein described organic base is selected from the group:Three second Amine, diethylamine, diisopropylethylamine, pyridine, or its combination;Described inorganic base is selected from sodium acetate, potassium acetate, biphosphate Sodium, disodium hydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, sodium carbonate, sodium acid carbonate, potassium carbonate, saleratus, sodium hydroxide, Potassium hydroxide or its combination;
Step ii) described in atent solvent for N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO) or its combination;
Step ii) described in borane reagent be selected from the group:Duplex pinacol borate;
Step ii) described in palladium catalyst be selected from 1,1 '-bis- (diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums, palladium carbon, acetic acid Palladium, or its combination.
2. the method as described in claim 1, it is characterised in that described alkali is triethylamine or diisopropylethylamine.
3. the method as described in claim 1, it is characterised in that described alkali is selected from sodium acetate, potassium acetate, sodium acid carbonate, carbon Sour potassium, or its combination.
4. the method as described in claim 1, it is characterised in that para-bromoaniline and the fluoro- 5- methylbenzenes of isocyanic acid 2- in step i) The mol ratio of ester is 0.2~1:1.
5. the method as described in claim 1, it is characterised in that para-bromoaniline and the fluoro- 5- methylbenzenes of isocyanic acid 2- in step i) The mol ratio of ester is 0.8~1:1.
6. the method as described in claim 1, it is characterised in that the dosage of the borane reagent and the mol ratio of Formula VII compound For 0.8~5:1.
7. the method as described in claim 1, it is characterised in that the dosage of the borane reagent and the mol ratio of Formula VII compound For 1~1.5:1.
8. the method as described in claim 1, it is characterised in that step ii) described in alkali dosage and Formula VII compound Mol ratio is 0.5~5:1.
9. the method as described in claim 1, it is characterised in that step ii) described in alkali dosage and Formula VII compound Mol ratio is 2~3.5:1.
10. the method as described in claim 1, it is characterised in that step ii) described in palladium catalyst for 1,1 '-bis- (hexichol Base phosphine) ferrocene, four triphenyl phosphorus palladiums.
11. the method as described in claim 1, it is characterised in that step ii) described in palladium catalyst dosage and Formula VII The mol ratio of compound is 0.01~0.2:1.
12. the method as described in claim 1, it is characterised in that step ii) described in palladium catalyst dosage and Formula VII The mol ratio of compound is 0.02~0.08:1.
13. the method as described in claim 1, it is characterised in that methods described also includes preparing isocyanic acid by following steps The fluoro- 5- methyl phenyl esters of 2-:
1a) in atent solvent, in the presence of a base, the fluoro- 5- methylanilines of 2- react with triphosgene, form the fluoro- 5- of isocyanic acid 2- Methyl phenyl ester:
Described alkali is selected from diisopropylethylamine;
Described atent solvent is selected from ethyl acetate, dichloromethane, tetrahydrofuran, or its combination.
14. a kind of preparation method of N- (4- (3- amino-1 h-indazole -4- bases) phenyl)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea, It is characterised in that it includes step:
I) in the presence of a base, the fluoro- 5- methyl phenyl esters of isocyanic acid 2- react with para-bromoaniline, form Formula VII compound;With
Ii) in atent solvent, in the presence of alkali and palladium catalyst, Formula VII compound is reacted with borane reagent, forms Formula IV chemical combination Thing:
Iii) Formula IV compound and 3- amino -4- iodine indazole are reacted, form N- (4- (3- amino-1 h-indazole -4- bases) benzene Base)-N '-(the fluoro- 5- aminomethyl phenyls of 2-) urea:
And step i) and step ii) described in alkali be organic base or inorganic base, wherein described organic base is selected from the group:Three second Amine, diethylamine, diisopropylethylamine, pyridine, or its combination;Described inorganic base is selected from sodium acetate, potassium acetate, biphosphate Sodium, disodium hydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, sodium carbonate, sodium acid carbonate, potassium carbonate, saleratus, sodium hydroxide, Potassium hydroxide or its combination.
Step ii) described in atent solvent for N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO) or its combination.
Step ii) described in borane reagent be selected from the group:Duplex pinacol borate;
Step ii) described in palladium catalyst be selected from 1,1 '-bis- (diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums, palladium carbon, acetic acid Palladium, or its combination.
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