WO2001021160A2 - Derives de carboxamide, inhibiteurs selectifs d'agents pathogenes - Google Patents

Derives de carboxamide, inhibiteurs selectifs d'agents pathogenes Download PDF

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WO2001021160A2
WO2001021160A2 PCT/EP2000/009306 EP0009306W WO0121160A2 WO 2001021160 A2 WO2001021160 A2 WO 2001021160A2 EP 0009306 W EP0009306 W EP 0009306W WO 0121160 A2 WO0121160 A2 WO 0121160A2
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use according
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substituents
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WO2001021160A3 (fr
WO2001021160B1 (fr
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Axel Ullrich
Manfred Marschall
Thomas Stamminger
Christian Wallasch
Sabine Obert
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Axxima Pharmaceuticals Aktiengesellschaft
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Priority to AU79064/00A priority patent/AU7906400A/en
Publication of WO2001021160A2 publication Critical patent/WO2001021160A2/fr
Publication of WO2001021160A3 publication Critical patent/WO2001021160A3/fr
Publication of WO2001021160B1 publication Critical patent/WO2001021160B1/fr

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    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
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    • A61K31/165—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
    • A61K31/167—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide having the nitrogen of a carboxamide group directly attached to the aromatic ring, e.g. lidocaine, paracetamol
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    • C07C233/66—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by halogen atoms or by nitro or nitroso groups
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    • C07C233/77—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups
    • C07C233/80—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by a carbon atom of a six-membered aromatic ring
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    • C07C275/28—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C275/40—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton being further substituted by nitrogen atoms not being part of nitro or nitroso groups
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    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms 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
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    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members 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
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    • C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
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Definitions

  • the present invention relates to the use of carboxamide compounds as selective inhibitors of pathogens, particularly viruses and, more particularly, herpesviridae. Surprisingly, these compounds show reduced side effects in comparison with previous antiviral compounds. Thus, a novel method for 10 preventing or treating infections by pathogens, particularly herpesviridae is provided.
  • HCMV Human Cytomegalqvirus
  • Allograft recipients (20,000 allograft transplantations per year in US) are often infected (or superinfected) by virus from the transplanted organ.
  • Clinical symptoms in the postransplant period include prolonged fever, 5 leukopenia, thrombocytopenia, atypical lymphocytosis, elevated hepatic transaminases and decreased graft survival.
  • HCMV infection has been associated with high mortality rates (80-90% for untreated HCMV pneumonia), which have been reduced by newer antiviral agents to 1 0-20% (reviewed in Britt J.B. and Alford C.A., 0 1 996, Cytomegaloviruses, pp.2494-2523.
  • B.N the Best Fit for HCMV pneumonia
  • Ganciclovir is available for intravenous and oral administration and as an implant in the case of retinitis. Toxicities include leukopenia and thrombocytopenia. Foscarnet (phosphonoformic acid) exhibits considerable renal toxicity and is only available in intravenous form, which is also true for Cidofovir.
  • Leflunomide an immunomodulatory drug used in rheumatoid arthritis, was previously found to inhibit HCMV replication in cell culture.
  • the antiinflammatory and immunosuppressive properties of Leflunomide have been demonstrated in animal models of autoimmune disease and organ transplant rejection (Reviewed in J. Rheumatology (1998) 25:20, Agents Actions (1991) 32:10) and it was recently approved for use in rheumatoid arthritis in the US (Scrip (1998) (2370):22).
  • the proposed basis for the antiproliferative action of Leflunomide for example, in mitogen-stimulated human T-lymphocytes (JBC (1998) 273:21682), is the suppression of the de novo pathway of pyrimidine synthesis.
  • the active metabolite of Leflunomide is a noncompetitive inhibitor of Dihydroorotate dehydrogenase ( D H O D H ) ( Bioc h em . Ph a rma co l . ( 1 995 ) 5_0_: 861 ; J. Pharmacol. Exper.ther. (1995) 275:1043; JBC (1995) 270:22467. Eur.J. Biochem. (1996) 240:292; Biochemistry (1996) 35:1270), a mitochondrial enzyme which catalyzes the rate-limiting step in this biosynthetic pathway.
  • D H O D H Dihydroorotate dehydrogenase
  • carboxamide derivatives can selectively inhibit kinases from pathogens, particularly from herpesviridae such as HCMV, without significantly inhibiting DHODH.
  • pathogens particularly from herpesviridae such as HCMV
  • these compounds show a pronounced reduction in HCMV replication but do not inhibit purified recombinant human DHODH in an in vitro assay.
  • This surprising uncoupling of antipathogen efficacy and inhibition of the de novo pyrimidine synthesis suggests that the subject carboxamide derivatives are free of the side effects associated with the antiproliferative and immunosuppressive properties of prior art medicaments such as Leflunomide.
  • the present invention refers to the use of compounds of the general formulae (la) , (lb), (lc) or (Id) : (la) (lb)
  • X and Z are substituents comprising an aromatic or heteroaromatic ring system for the manufacture of an agent against infectious diseases.
  • X and/or Z may be an aromatic radical, preferably a phenyl radical which is unsubstituted or which carries at least one substituent, e.g. 1 -4 substituents which may be selected from hydroxy, cyano, nitro, halo, e.g.
  • X and/or Z is an aromatic or heteroaromatic radical, e.g . a phenyl radical having at least one, particularly one, two or three C ⁇ -C 4 haloalkyl substituents, e.g . C, haloalkyl substituents such as -CF 3 , -CHF 2 and -CH 2 F.
  • X and/or Z may be selected from radicals represented by formulae (lla-c) :
  • Y is preferably hydrogen or C ⁇ alkyl, more preferably hydrogen.
  • X and/or Z comprises a heterocyclic ring which may contain one or several heteroatoms such as oxygen, nitrogen and/or sulfur, preferably a 5-membered heterocyclic ring which may be selected from pyrrole, pyrazole, imidazole, 1 ,2,3-triazole, tetrazole, oxazole, isoxazole, thiazole, isothiazole, 1 ,2,4-thiadiazole, 1 ,3,4-thiadiazole, thiophene, furan, indole and 3-thiaindole, a 6-membered heterocyclic ring which may be selected from pyridine, pyran, pyrimidine, pyridazine, pyrimidine and pyrazine, or a bi- or polycyclic heteroaromatic ring such as indazole, imidazole, chinoline or isochinoline.
  • the heterocyclic ring can be mono, di,
  • R is at least one substituent, e.g. one or two substituents selected from halo, C ⁇ Cg alkyl, ⁇ 3 alkoxy or aryl, e.g . phenyl.
  • the aromatic and/or heteroaromatic ring of X an Z may be directly linked to the central structural element of the compounds (la-d), i.e. by a covalent bond .
  • the linkage may comprise an alkylene-group, preferably a C C 4 alkylene group, e.g. a C ⁇ or C 2 alkylene group.
  • compounds (la), (lb), (lc) and (Id) have a selectivity for kinases from pathogens compared with the cellular enzyme DHODH .
  • the compounds are suitable for the preparation of an agent against infectious diseases, particularly viral infections, more particularly, against infections by herpesviruses.
  • the herpesviruses may be selected from human herpesviruses and herpesviruses from other mammals, such as bovine, equine, porcine and pongine herpesviruses.
  • Suitable herpesviruses are selected from ⁇ -herpesviruses, e.g.
  • herpesvirus such as herpes simplex virus 1 , herpes simplex virus 2, bovine herpesvirus 2, cercopithecine herpesvirus 1 or varicellaviruses such as varicella zoster virus, porcine herpesvirus 1 (pseudorabiesvirus) bovine herpesvirus 1 and equine herpesvirus 1 (equine abortion virus) .
  • the herpesvirus may be selected from ⁇ -herpesviruses, e.g. cytomegaloviruses such as human cytomegalovirus and from roseoloviruses, such as human herpesvirus 6, human herpesvirus 7 or aotine herpesviruses 1 and 3.
  • the herpesviruses may be selected from ⁇ -herpesviruses, e.g. from lymphocryptoviruses such as Epstein-Barr virus, cercopithecine herpesvirus 2 or porcine herpesvirus 1 , or from rhadinoviruses such as human herpesvirus 8, ateline herpesvirus 2 or saimudine herpesvirus 1 , or preferably, the virus is selected from human herpesvirus 1 (HSV-1 ), varicella zoster virus (VZV) or human cytomegalovirus (HCMV) .
  • HSV-1 human herpesvirus 1
  • VZV varicella zoster virus
  • HCMV human cytomegalovirus
  • the compounds are active against Foscarnet-resistant HCMV strains. Thus, they are likely to have a mode of action which is different from the HCMV drugs on the market, making them valuable tools for combination therapy approaches, e.g. for combination therapies together with viral DNA polymerase inhibitors. Furthermore, it was found that the compounds are potent inhibitors of ganciclovir-resistant virus strains, particularly ganciclovir-resistant HCMV strains.
  • the compounds of the formula I are suitable for the manufacture of an agent for the prophylaxis and/or treatment of a viral infection.
  • This prophylaxis or treatment comprises administering a pharmaceutical composition containing as an active agent a pharmaceutically effective amount of a compound of the general formula I to a subject, preferably a human, in need thereof, e.g. a subject suffering from a herpesvirus infection or a subject which is in need of a prophylactic administration to avoid the outbreak of a herpesvirus infection.
  • the pharmaceutical composition may contain suitable diluents, carriers and auxiliary agents. Further, the composition may also contain other pharmaceutically active agents, e.g. antiviral agents.
  • the pharmaceutical composition may be suitable for oral, parenteral, e.g . intradermal, intravenous or intramuscular, rectal, nasal and topical applications.
  • the composition may be an injectable solution, ointment, cream or spray. Further, the composition may have retardation properties, i.e. showing a delayed release of the active agent.
  • the dosage of the active agent depends on the specific compound being administered, the type and the severity of the viral infection. For example, a dosage from 0.01 mg to 100 mg per day and per kg/body weight for the active agent is suitable.
  • the efficacy of the compounds of formulae (la), (lb), (Ic) and (Id) against enzymes from pathogens, e.g. viral kinases, may be determined in an in vitro enzyme inhibition test.
  • the anti-viral effect can also be determined directly in a cell culture assay.
  • a preferred and new cell culture assay is described in Example 2.2 and comprises the use of cells infected with a recombinant human cytomegalovirus carrying a reporter gene, e.g . the GFP-gene.
  • the reporter gene is preferably inserted into the viral genome in a manner that viral replication is still possible.
  • the reporter gene may be inserted into the HCMV gene region encoding the open reading frames US9 and US1 0.
  • a further embodiment of the present invention refers to the use of compounds of the general formula (IV) :
  • X and Y are defined as for the compounds (la-d) and R' is selected from C -C alkyl and C 3 -C 4 cycloalkyl, particularly CH 3 , for the preparation of an agent against ganciclovir-resistant virus strains.
  • the compounds may be present in the form of a physiologically acceptable salt, e.g. an alkali metal, amonium or substituted amonium salt, particularly the sodium salt or the salt of a basic amino acid such as lysine.
  • the compounds of formula (IV) may be classified as leflunomides. Surprisingly, these leflunomides are potent inhibitors of ganciclovir-resistant virus strains, particularly ganciclovir-resistant herpes virus strains and more particularly ganciclovir- resistant HCMV strains.
  • the compounds of the formula (IV) are suitable for the manufacture of an agent for the prophylaxis and/or treatment of a viral infection.
  • This prophylaxis or treatment may be carried out as described above for compounds of the formulae (la) and (lb) .
  • Fig. 1 is a list of compounds of the present invention having anti-viral activity.
  • Fig. 2 is a diagram showing the efficacy of compounds of the present invention against a ganciclovir-resistant virus strain.
  • the aromatic rings can be mono, di, tri, or tetrasubstituted with e.g. alkyl, substituted alkyl, aryl, hydroxy, halogen, nitro, carboxy, thiomethyl groups.
  • the heterocyclic ring can be mono, di, tri, or tetrasubstituted with e.g. alkyl, substituted alkyl, aryl, hydroxy, oxo, halogen, nitro, thiomethyl groups.
  • the cDNA for human DHODH (accession number M94065) was obtained via PCR with EST clone AA173225 (from RZPD in Berlin) and oligonucleotides 5'-CTG AAT TCA AAT TAC CGT GGA GAC ACC TGC
  • the assay was basically performed as described by Copeland et al. ("NBT assay", Arch. Biochem. Biophys.323:79, 1 995) with slight modifications: 20 ⁇ of a 5x ubiquinone mixture ( 1 mM Ubiquinone Q1 0, 0.5 % Triton X100, 500 mM Tris pH 7.5), 2 ⁇ of 1 0 mM NBT (nitroblue tetrazolium), 2-1 0 ⁇ of DHODH-GST (depending on the batch of 1 -liter bacterial preparation), 91 - 83 ⁇ of water and 5 ⁇ of compound or DSMO were added to each well of a 96-well microtiter plate.
  • HFF Human foreskin fibroblasts
  • pBlueScribe vector pBS + (Stratagene) : the first contained restriction sites for Nhel, Spel, Pad and Bgll followed by a loxP sequence (ATAACTTCGTATAGCATACATTATACGAAGTTAT) and was introduced into Pstl/Xbal sites of the vector; the second contained another loxP sequence followed by restriction sites Hpal, Clal and Pmel and was introduced into BamHI/Asp71 8 sites.
  • a gene cassette comprising of a "humanized” version of the ORF coding for GFP (gfp-h) under the control of the HCMV enhancer/promoter and the Ptk/PY441 enhancer-driven neoR selection marker was excised from plasmid pUF5 (Zolotukhin et al., 1 996, J .Virol.70, 4646-4654) and inserted into the recombination vector via Bglll sites.
  • HCMV sequences with homology to the gene region containing the open reading frames US9 and US1 0 were inserted.
  • viral sequences were amplified from template pCM49 (Fleckenstein et al., 1 982, Gene 1 8, 39-46) via PCR in a 35-cycle program (denaturation 45 sec at 95°C, annealing 45 sec at 55 °C and elongation 2 min at 72 °C) by the use of Vent DNA polymerase (New England Biolabs) .
  • a US 1 0-specific sequence of 1 983 bp in length was generated using primers US 1 0[200900]Spel (GCTCACTAGTGGCCTAGCCTGGCTCATGGCC) and US1 0[ 1 9891 8]Pacl (GTCCTTAATTAAGACGTGGTTGTGGTCACCGAA) and inserted at the vector 5' cloning position via Spel/Pacl restriction sites (see bold-print) .
  • a US9-specific sequence of 201 0 bp was generated using primers US9- 3'Pmel (CTCGGTTTAAACGACGTGAGGCGCTCCGTCACC) and US-5' Clal (TTGCATCGATACGGTGTGAGATACCACGATG) inserted at the vector 3' cloning position via Pmel/Clal restriction sites.
  • the resulting construct pHM673 was linearized by the use of restriction enzyme Nhel and transfected into HEF cells via the electroporation method using a Gene Pulser (Bio-rad; 280 V, 960 ⁇ F, 400 ⁇ ) .
  • a Gene Pulser Bio-rad; 280 V, 960 ⁇ F, 400 ⁇
  • cells were used for infection with 1 PFU/ml of HCMV strain AD 1 69.
  • Selection with 200 ⁇ g/ml G41 8 was started 24 h post infection. Following 3 weeks of passage in the presence of G41 8, GFP fluorescence could be detected in most of the infected cells.
  • Plaque assays were performed with infectuous culture supernatant on HFF cells and single virus plaques were grown by transfer to fresh HFF cells cultured in 48-well plates.
  • DNA was isolated from cells of 32 fluorescence-positive wells and confirmed for the presence of recombinant virus by PCR.
  • HFF cells were cultivated in 1 2-well plates to 90-100% confluency and used for infection with dilutions of virus-positive cell culture supernatants. Virus inoculation was performed for 90 min at 37 °C under occasional shaking before virus was removed and the cell layers were rinsed with PBS. Overlays of MEM 5 % (v/v) fetal calf serum and 0.3% (w/v) agarose were added to each well and all samples were incubated at 37°C in a 5 % CO 2 atmosphere for approximately 1 2 days. Finally, overlays were removed and the formation of foci was visualized by staining with 1 % crystal violet in 20% ethanol for 1 min.
  • plaque assays After repeated rinsing with PBS, plates were air- dried at room temperature and plaque numbers were counted with a light microscope.
  • quantification of plaque assays could also be performed without crystal violet staining by a direct counting of the amount of green fluorescent plaques using fluorescence microscopy.
  • Antiviral compounds The reference compounds used for antiviral studies, ganciclovir (GCV, Cymeven), foscarnet sodium (FOS, Foscavir) and cidofovir (CDV, Vistide) were purchased from Syntex Arzneistoff (Aachen, Germany), Sigma- Aldrich (Germany) and Pharmacia & Upjohn S.A. (Luxembourg), respectively. Stocks were prepared in aequeous solution and stored at -20 °C. The test compounds were dissolved in DMSO and aliquots were stored at -20°C.
  • HFF cells were cultivated in 1 2-well plates to 90-1 00% confluency and used for infection with 0,5xTCID 50 of AD1 69-GFP virus. Virus inoculation was performed for 90 min at 37 °C with occasional shaking before virus was removed and the cell layers were rinsed with PBS. Infected cell layers were incubated with 2 ml of MEM containing 5% (v/v) fetal calf serum and optionally of the respective test substances or DMSO as control. Infected cells were incubated at 37 °C in a 5% CO 2 atmosphere for 7 days and harvested by trypsination and centrifugation.
  • lysis buffer 25 mM Tris pH 7.8, 2 mM DTT, 2 mM trans-1 ,2-diaminocyclohexane-N,N,N',N'- tetraacetic acid, 1 % Triton X-1 00, 10% glycerol
  • lysis buffer 25 mM Tris pH 7.8, 2 mM DTT, 2 mM trans-1 ,2-diaminocyclohexane-N,N,N',N'- tetraacetic acid, 1 % Triton X-1 00, 10% glycerol
  • Cells were either grown on Lab-Tek Permanox slides (Nunc) or harvested from 6-well plates, spotted onto glass slides with marked rings (Medco) and fixed by a 1 5-min treatment with 3% formaldehyde in PBS followed by permeabilization for 1 5 min in 0.1 % Triton X-1 00 in PBS at room temperature. Blocking was achieved by incubation with Cohn Fraction ll/lll of human gamma-globulin (Sigma; 2 mg/ml) for 30 min at 37 °C.
  • the IE 1 /IE2-specific primary antibody MAb81 0 (Chemicon International, Inc.
  • Table 1 shows the compounds and lists which percentage of DHODH activity is inhibited at a concentration of 20 ⁇ M. Values are averages of duplicate measurements from two different experiments. Percentage of HCMV inhibition at 20 ⁇ M and 1 00 /vM (two different experiments) of the substances are also shown. Values are averages of duplicate measurements. Table 1
  • the compounds shown in Fig. 1 also have significant anti-viral activity in the assay system as described above.
  • a series of laboratory variants of AD 1 69-GFP virus with resistance against ganciclovir (GCV) was generated.
  • HFF cells were infected in 1 2-well plates with MOI 0.002 and incubated with 1 ⁇ M of GCV.
  • GFP-expression in infected cells was monitored microscopically and the supernatants of positive wells were transferred to fresh cells weekly. Thereby GCV concentrations were increased stepwise ( 1 -//M increase in each step) up to the point where the total virus replication became critical and resistant virus grew out in individual wells. Using supernatants of these wells, two rounds of plaque purifications were performed on HFF cells.
  • GCV-resistant viral clones e.g. AD1 69-GFP31 4
  • HFF cells were cultivated in 1 2-well plates to 90-1 00% confluency and used for infection with dilutions of virus stocks (i.e. AD 1 69-GFP or AD1 69- GFP31 4) .
  • virus inoculation was performed for 90 minutes at 37 °C under occasional shaking before virus was removed and the cell layers were rinsed with PBS.
  • Overlays of MEM containing 5% (v/v) fetal calf serum and 0.3% (w/v) agarose were added to each well. The plates were incubated at 37°C in a 5 % CO 2 atmosphere for 8-1 2 d.
  • plaque purification of GFP- expressing viruses plates were used for fluorescence microscopy, GFP- positive plaques were picked from the overlays and transferred to fresh cells for virus multiplication.
  • plaque reduction assays antiviral compounds were incubated in the overlays after infection. Overlays were removed and plaque formation was visualized by staining with 1 % cristal violet in 20% ethanol for 1 min. After repeated rinsing with PBS, plates were air-dried at room temperature and plaque numbers were counted with a light microscope.
  • quantification of plaque reduction assays could be performed alternatively, without cristal violet staining, by a direct counting of the numbers of green fluorescent plaques using fluorescence microscopy.
  • HFF cells were cultivated in 1 2-well plates (250,000 cells/well) and used for infection with 0.5xTCID 50 -GFP of AD1 69-GFP or AD 1 69-GFP31 4 virus. Virus inoculation was performed as described above. [TCID 50 -GFP was defined as the dilution of the virus inoculum producing 50% of the maximal GFP signal in HFF cells] . Then, infected cell layers were incubated with 2,5 ml of MEM containing 5 % (v/v) fetal calf serum and optionally a dilution of one of the respective test compounds. Infected cells were incubated at 37 °C in a 5 % CO 2 atmosphere for 7 d.
  • lysis buffer 25 mM Tris pH 7.8 2 mM DTT, 2 mM trans- 1 ,2-diaminocyclohexane-N,N,N',N'- tetraacetic acid, 1 % Triton X-100, 1 0% glycerol
  • lysis buffer 25 mM Tris pH 7.8 2 mM DTT, 2 mM trans- 1 ,2-diaminocyclohexane-N,N,N',N'- tetraacetic acid, 1 % Triton X-100, 1 0% glycerol
  • GCV-resistant HCMV is sensitive to compound ( 1 ) or compound (6) .
  • HFF cells were cultivated in 1 2-well plates and infected with the indicated concentrations of GFP-expressing variants of HCMV, AD1 69-GFP (parental) or AD1 69-GFP314 (GCV-resistant) .
  • the following chemical compounds were added to the culture media: DMSO 0.07% (A), 0.1 4% (B), ganciclovir (GCV) 1 0 M (A and B), compound (6) 35 ⁇ M (A) and 70 M (B), and compound ( 1 ) 35 ⁇ M (A) and 70 ⁇ M (B) .
  • Seven days postinfection infected cells were harvested and used for GFP quantification.
  • the results for parental virus AD 1 69-GFP and a GCV- resistant virus mutant (AD 1 69-GFP314) are shown in Fig. 2a and 2b, respectively.

Abstract

La présente invention porte sur l'utilisation de composés de carboxamide servant d'inhibiteurs sélectifs d'agents pathogènes, particulièrement de virus et, plus particulièrement, d'herpesviridae. Ces composés ont l'avantage de présenter moins d'effets secondaires que les composés antiviraux existants. La présente invention constitue ainsi un nouveau procédé de prévention ou de traitement des infections par agents pathogènes, particulièrement les herpesviridae.
PCT/EP2000/009306 1999-09-23 2000-09-22 Derives de carboxamide, inhibiteurs selectifs d'agents pathogenes WO2001021160A2 (fr)

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