US20090093526A1 - Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas - Google Patents
Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas Download PDFInfo
- Publication number
- US20090093526A1 US20090093526A1 US11/932,397 US93239707A US2009093526A1 US 20090093526 A1 US20090093526 A1 US 20090093526A1 US 93239707 A US93239707 A US 93239707A US 2009093526 A1 US2009093526 A1 US 2009093526A1
- Authority
- US
- United States
- Prior art keywords
- urea
- halogen
- alkyl
- methoxyphenyl
- optionally substituted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- -1 diphenyl ureas Chemical class 0.000 title claims abstract description 87
- 235000013877 carbamide Nutrition 0.000 title abstract description 40
- 102000002574 p38 Mitogen-Activated Protein Kinases Human genes 0.000 title description 20
- 108010068338 p38 Mitogen-Activated Protein Kinases Proteins 0.000 title description 20
- 230000005764 inhibitory process Effects 0.000 title description 7
- 239000004305 biphenyl Substances 0.000 title description 2
- 235000010290 biphenyl Nutrition 0.000 title description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 title description 2
- 201000010099 disease Diseases 0.000 claims abstract description 27
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 27
- 230000001404 mediated effect Effects 0.000 claims abstract description 20
- 102000004127 Cytokines Human genes 0.000 claims abstract description 13
- 108090000695 Cytokines Proteins 0.000 claims abstract description 13
- 108091005804 Peptidases Proteins 0.000 claims abstract description 11
- 239000008194 pharmaceutical composition Substances 0.000 claims abstract description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 92
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 90
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 77
- 150000002367 halogens Chemical class 0.000 claims description 73
- 150000001875 compounds Chemical class 0.000 claims description 66
- 125000000027 (C1-C10) alkoxy group Chemical group 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 47
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 44
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 31
- 125000003118 aryl group Chemical group 0.000 claims description 30
- 125000001072 heteroaryl group Chemical group 0.000 claims description 30
- 125000005843 halogen group Chemical group 0.000 claims description 28
- 239000004202 carbamide Substances 0.000 claims description 25
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 20
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 14
- 125000006374 C2-C10 alkenyl group Chemical group 0.000 claims description 13
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910006095 SO2F Inorganic materials 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 11
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 125000004429 atom Chemical group 0.000 claims description 10
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical group C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 125000004076 pyridyl group Chemical group 0.000 claims description 10
- 108060008682 Tumor Necrosis Factor Proteins 0.000 claims description 9
- 102000000852 Tumor Necrosis Factor-alpha Human genes 0.000 claims description 9
- 125000005915 C6-C14 aryl group Chemical group 0.000 claims description 8
- 206010028980 Neoplasm Diseases 0.000 claims description 8
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical group C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 claims description 8
- 206010040070 Septic Shock Diseases 0.000 claims description 7
- 125000003545 alkoxy group Chemical group 0.000 claims description 7
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical group N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 6
- 201000011510 cancer Diseases 0.000 claims description 6
- 125000001475 halogen functional group Chemical group 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 206010039073 rheumatoid arthritis Diseases 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 125000006376 (C3-C10) cycloalkyl group Chemical group 0.000 claims description 5
- RGBHNZLHKCUWSG-UHFFFAOYSA-N 1-(3-methoxynaphthalen-2-yl)-3-naphthalen-1-ylurea Chemical compound C1=CC=C2C(NC(=O)NC3=CC4=CC=CC=C4C=C3OC)=CC=CC2=C1 RGBHNZLHKCUWSG-UHFFFAOYSA-N 0.000 claims description 5
- NSCICEWWQXGDBG-UHFFFAOYSA-N 1-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]-3-(2-fluoro-4-methylphenyl)urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(C)C=C1F NSCICEWWQXGDBG-UHFFFAOYSA-N 0.000 claims description 5
- 108010002352 Interleukin-1 Proteins 0.000 claims description 5
- 102000000589 Interleukin-1 Human genes 0.000 claims description 5
- 239000004365 Protease Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 125000001624 naphthyl group Chemical group 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 5
- NARZIXFXYQEUCF-UHFFFAOYSA-N 1-(3-methoxynaphthalen-2-yl)-3-(4-methylphenyl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC1=CC=C(C)C=C1 NARZIXFXYQEUCF-UHFFFAOYSA-N 0.000 claims description 4
- XSIGIAGUVJSXBS-UHFFFAOYSA-N 1-[2-methoxy-5-(trifluoromethyl)phenyl]-3-(4-pyridin-4-ylsulfanylphenyl)urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC(C=C1)=CC=C1SC1=CC=NC=C1 XSIGIAGUVJSXBS-UHFFFAOYSA-N 0.000 claims description 4
- VKUYLANQOAKALN-UHFFFAOYSA-N 2-[benzyl-(4-methoxyphenyl)sulfonylamino]-n-hydroxy-4-methylpentanamide Chemical compound C1=CC(OC)=CC=C1S(=O)(=O)N(C(CC(C)C)C(=O)NO)CC1=CC=CC=C1 VKUYLANQOAKALN-UHFFFAOYSA-N 0.000 claims description 4
- 108090001007 Interleukin-8 Proteins 0.000 claims description 4
- 102000000380 Matrix Metalloproteinase 1 Human genes 0.000 claims description 4
- 108010016113 Matrix Metalloproteinase 1 Proteins 0.000 claims description 4
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Chemical group C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 claims description 4
- 102100030416 Stromelysin-1 Human genes 0.000 claims description 4
- 101710108790 Stromelysin-1 Proteins 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- MDFFNEOEWAXZRQ-UHFFFAOYSA-N aminyl Chemical compound [NH2] MDFFNEOEWAXZRQ-UHFFFAOYSA-N 0.000 claims description 4
- LVWZTYCIRDMTEY-UHFFFAOYSA-N metamizole Chemical group O=C1C(N(CS(O)(=O)=O)C)=C(C)N(C)N1C1=CC=CC=C1 LVWZTYCIRDMTEY-UHFFFAOYSA-N 0.000 claims description 4
- 201000008482 osteoarthritis Diseases 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- BVGDTMAZIBUCJX-UHFFFAOYSA-N 1-(3-chloro-4-methylphenyl)-3-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(C)C(Cl)=C1 BVGDTMAZIBUCJX-UHFFFAOYSA-N 0.000 claims description 3
- ASMCVDDUQQZBFK-UHFFFAOYSA-N 1-(5-chloro-2-hydroxy-4-nitrophenyl)-3-phenylurea Chemical compound OC1=CC([N+]([O-])=O)=C(Cl)C=C1NC(=O)NC1=CC=CC=C1 ASMCVDDUQQZBFK-UHFFFAOYSA-N 0.000 claims description 3
- QXEQXIYKHSLSID-UHFFFAOYSA-N 1-[2-methoxy-5-(trifluoromethyl)phenyl]-3-(3-pyridin-4-ylsulfanylphenyl)urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=CC(SC=2C=CN=CC=2)=C1 QXEQXIYKHSLSID-UHFFFAOYSA-N 0.000 claims description 3
- FUOBTFFYDOUWJF-UHFFFAOYSA-N 1-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]-3-(2,3-dimethylphenyl)urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=CC(C)=C1C FUOBTFFYDOUWJF-UHFFFAOYSA-N 0.000 claims description 3
- ORPATFVSFMGXEK-UHFFFAOYSA-N 1-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]-3-(3-fluoro-4-methylphenyl)urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(C)C(F)=C1 ORPATFVSFMGXEK-UHFFFAOYSA-N 0.000 claims description 3
- FLQZHESNDLWZGI-UHFFFAOYSA-N 1-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]-3-(4-fluoro-3-methylphenyl)urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(F)C(C)=C1 FLQZHESNDLWZGI-UHFFFAOYSA-N 0.000 claims description 3
- JNGWTTDGSWDQFT-UHFFFAOYSA-N 1-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]-3-(4-methylphenyl)urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(C)C=C1 JNGWTTDGSWDQFT-UHFFFAOYSA-N 0.000 claims description 3
- AUWOOQSOMNALEH-UHFFFAOYSA-N 1-[5-tert-butyl-2-(oxolan-3-yloxy)phenyl]-3-(2,3-dichlorophenyl)urea Chemical compound C=1C=CC(Cl)=C(Cl)C=1NC(=O)NC1=CC(C(C)(C)C)=CC=C1OC1CCOC1 AUWOOQSOMNALEH-UHFFFAOYSA-N 0.000 claims description 3
- ZFXKBQLAXHAGGU-UHFFFAOYSA-N 2-[4-tert-butyl-2-(naphthalen-1-ylcarbamoylamino)phenoxy]-n-methylacetamide Chemical compound CNC(=O)COC1=CC=C(C(C)(C)C)C=C1NC(=O)NC1=CC=CC2=CC=CC=C12 ZFXKBQLAXHAGGU-UHFFFAOYSA-N 0.000 claims description 3
- NQSGLPJENUWZCH-UHFFFAOYSA-N 2-[4-tert-butyl-2-[(2,3-dichlorophenyl)carbamoylamino]phenoxy]-n-methylacetamide Chemical compound CNC(=O)COC1=CC=C(C(C)(C)C)C=C1NC(=O)NC1=CC=CC(Cl)=C1Cl NQSGLPJENUWZCH-UHFFFAOYSA-N 0.000 claims description 3
- 208000022559 Inflammatory bowel disease Diseases 0.000 claims description 3
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical group C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 claims description 3
- 208000006673 asthma Diseases 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 230000002519 immonomodulatory effect Effects 0.000 claims description 3
- 230000002757 inflammatory effect Effects 0.000 claims description 3
- 230000036303 septic shock Effects 0.000 claims description 3
- CIMJBQAYBPMLBL-UHFFFAOYSA-N 1-(2,3-dimethylphenyl)-3-(3-methoxynaphthalen-2-yl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC1=CC=CC(C)=C1C CIMJBQAYBPMLBL-UHFFFAOYSA-N 0.000 claims description 2
- FWYLZUATYISQMP-UHFFFAOYSA-N 1-(2,4-difluorophenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(F)C=C1F FWYLZUATYISQMP-UHFFFAOYSA-N 0.000 claims description 2
- SUCUGGJVKQQPES-UHFFFAOYSA-N 1-(2-fluoro-4-methylphenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(C)C=C1F SUCUGGJVKQQPES-UHFFFAOYSA-N 0.000 claims description 2
- KUGJJKWDMFQOSJ-UHFFFAOYSA-N 1-(2-fluorophenyl)-3-(3-methoxynaphthalen-2-yl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC1=CC=CC=C1F KUGJJKWDMFQOSJ-UHFFFAOYSA-N 0.000 claims description 2
- DWJLOSAVQXZQEK-UHFFFAOYSA-N 1-(3,5-dichloro-4-phenoxyphenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC(C=C1Cl)=CC(Cl)=C1OC1=CC=CC=C1 DWJLOSAVQXZQEK-UHFFFAOYSA-N 0.000 claims description 2
- SUEHBAZECVRTOQ-UHFFFAOYSA-N 1-(3-chloro-4-fluorophenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(F)C(Cl)=C1 SUEHBAZECVRTOQ-UHFFFAOYSA-N 0.000 claims description 2
- HIXNPJUOIABYJB-UHFFFAOYSA-N 1-(3-chloro-4-fluorophenyl)-3-[5-(difluoromethylsulfonyl)-2-methoxyphenyl]urea Chemical compound COC1=CC=C(S(=O)(=O)C(F)F)C=C1NC(=O)NC1=CC=C(F)C(Cl)=C1 HIXNPJUOIABYJB-UHFFFAOYSA-N 0.000 claims description 2
- ONUBJNPWBUNSDO-UHFFFAOYSA-N 1-(3-chloro-4-methylphenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(C)C(Cl)=C1 ONUBJNPWBUNSDO-UHFFFAOYSA-N 0.000 claims description 2
- RVRRXOGHQFPGEO-UHFFFAOYSA-N 1-(3-fluoro-4-methylphenyl)-3-(3-methoxynaphthalen-2-yl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC1=CC=C(C)C(F)=C1 RVRRXOGHQFPGEO-UHFFFAOYSA-N 0.000 claims description 2
- NACDJICRDYELIJ-UHFFFAOYSA-N 1-(3-fluoro-4-methylphenyl)-3-[2-methoxy-5-(trifluoromethyl)phenyl]urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(C)C(F)=C1 NACDJICRDYELIJ-UHFFFAOYSA-N 0.000 claims description 2
- CPXWLAHCVVXGEX-UHFFFAOYSA-N 1-(3-fluorophenyl)-3-(3-methoxynaphthalen-2-yl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC1=CC=CC(F)=C1 CPXWLAHCVVXGEX-UHFFFAOYSA-N 0.000 claims description 2
- IDWWOMPHWKJLGC-UHFFFAOYSA-N 1-(3-methoxynaphthalen-2-yl)-3-(4-pyridin-4-ylsulfanylphenyl)urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC(C=C1)=CC=C1SC1=CC=NC=C1 IDWWOMPHWKJLGC-UHFFFAOYSA-N 0.000 claims description 2
- AGSGMXNMNBWVDI-UHFFFAOYSA-N 1-(3-methoxynaphthalen-2-yl)-3-[4-(4-methoxyphenoxy)phenyl]urea Chemical compound C1=CC(OC)=CC=C1OC(C=C1)=CC=C1NC(=O)NC1=CC2=CC=CC=C2C=C1OC AGSGMXNMNBWVDI-UHFFFAOYSA-N 0.000 claims description 2
- UBZGBQRSXPGADO-UHFFFAOYSA-N 1-(3-methoxynaphthalen-2-yl)-3-[4-(pyridin-4-ylmethyl)phenyl]urea Chemical compound COC1=CC2=CC=CC=C2C=C1NC(=O)NC(C=C1)=CC=C1CC1=CC=NC=C1 UBZGBQRSXPGADO-UHFFFAOYSA-N 0.000 claims description 2
- BQUTVXTUZCAKSG-UHFFFAOYSA-N 1-(5-tert-butyl-2-methoxyphenyl)-3-[4-(pyridin-3-ylmethyl)phenyl]urea Chemical compound COC1=CC=C(C(C)(C)C)C=C1NC(=O)NC(C=C1)=CC=C1CC1=CC=CN=C1 BQUTVXTUZCAKSG-UHFFFAOYSA-N 0.000 claims description 2
- XNIGDEIZAANVJQ-UHFFFAOYSA-N 1-(5-tert-butyl-2-methoxyphenyl)-3-[4-(pyridin-4-ylmethyl)phenyl]urea Chemical compound COC1=CC=C(C(C)(C)C)C=C1NC(=O)NC(C=C1)=CC=C1CC1=CC=NC=C1 XNIGDEIZAANVJQ-UHFFFAOYSA-N 0.000 claims description 2
- ANGVHJHUUCSQAW-UHFFFAOYSA-N 1-(5-tert-butyl-2-phenylphenyl)-3-(2,3-dichlorophenyl)urea Chemical compound C=1C(C(C)(C)C)=CC=C(C=2C=CC=CC=2)C=1NC(=O)NC1=CC=CC(Cl)=C1Cl ANGVHJHUUCSQAW-UHFFFAOYSA-N 0.000 claims description 2
- YRHGPXLYOAFTRO-UHFFFAOYSA-N 1-(5-tert-butyl-2-thiophen-3-ylphenyl)-3-(2,3-dichlorophenyl)urea Chemical compound C=1C=CC(Cl)=C(Cl)C=1NC(=O)NC1=CC(C(C)(C)C)=CC=C1C=1C=CSC=1 YRHGPXLYOAFTRO-UHFFFAOYSA-N 0.000 claims description 2
- XQXIPVQCMSNTRN-UHFFFAOYSA-N 1-[2-methoxy-5-(trifluoromethyl)phenyl]-3-(4-methylphenyl)urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC1=CC=C(C)C=C1 XQXIPVQCMSNTRN-UHFFFAOYSA-N 0.000 claims description 2
- MWSOHEJRUMZBJC-UHFFFAOYSA-N 1-[2-methoxy-5-(trifluoromethyl)phenyl]-3-(4-pyridin-4-yloxyphenyl)urea Chemical compound COC1=CC=C(C(F)(F)F)C=C1NC(=O)NC(C=C1)=CC=C1OC1=CC=NC=C1 MWSOHEJRUMZBJC-UHFFFAOYSA-N 0.000 claims description 2
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- LYKMMUBOEFYJQG-UHFFFAOYSA-N piperoxan Chemical group C1OC2=CC=CC=C2OC1CN1CCCCC1 LYKMMUBOEFYJQG-UHFFFAOYSA-N 0.000 claims description 2
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- 238000010265 fast atom bombardment Methods 0.000 description 154
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- 239000000203 mixture Substances 0.000 description 109
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 78
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 70
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/16—Amides, e.g. hydroxamic acids
- A61K31/17—Amides, e.g. hydroxamic acids having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
- A61K31/341—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide not condensed with another ring, e.g. ranitidine, furosemide, bufetolol, muscarine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/38—Heterocyclic compounds having sulfur as a ring hetero atom
- A61K31/381—Heterocyclic compounds having sulfur as a ring hetero atom having five-membered rings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
- A61K31/4035—Isoindoles, e.g. phthalimide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
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- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5375—1,4-Oxazines, e.g. morpholine
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- A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
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- A—HUMAN NECESSITIES
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Definitions
- This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases and proteolytic enzyme mediated diseases, and pharmaceutical compositions for use in such therapy.
- effector molecules which are critical for the progression of rheumatoid arthritis are pro-inflammatory cytokines and tissue degrading proteases. Recently, a family of kinases was described which is instrumental in controlling the transcription and translation of the structural genes coding for these effector molecules.
- the mitogen-activated protein (MAP) kinase family is made up of a series of structurally related proline-directed serine/threonine kinases which are activated either by growth factors (such as EGF) and phorbol esters (ERK), or by IL-1, TNF ⁇ or stress (p38, JNK).
- the MAP kinases are responsible for the activation of a wide variety of transcription factors and proteins involved in transcriptional control of cytokine production.
- a pair of novel protein kinases involved in the regulation of cytokine synthesis was recently described by a group from SmithKline Beecham (Lee et al. Nature 1994, 372, 739).
- CSAIDSs cytokine suppressive anti-inflammatory drugs
- CSAIDs function by interfering with m-RNA translational events during cytokine biosynthesis. Inhibition of p38 has been shown to inhibit both cytokine production (eg., TNF ⁇ , IL-1, IL-6, IL-8) and proteolytic enzyme production (eg., MMP-1, MMP-3) in vitro and/or in vivo.
- cytokine production eg., TNF ⁇ , IL-1, IL-6, IL-8
- proteolytic enzyme production eg., MMP-1, MMP-3
- TNF ⁇ production and/or signaling have linked TNF ⁇ production and/or signaling to a number of diseases including rheumatoid arthritis (Maini. J. Royal Coil. Physicians London 1996, 30, 344).
- excessive levels of TNF ⁇ have been implicated in a wide variety of inflammatory and/or immunomodulatory diseases, including acute rheumatic fever (Yegin et al. Lancet 1997, 349, 170), bone resorption (Pacifici et al. J. Clin. Endocrinol. Metabol. 1997, 82, 29), postmenopausal osteoperosis (Pacifici et al. J. Bone Mineral Res. 1996, 11, 1043), sepsis (Blackwell et al. Br. J. Anaesth.
- TNF ⁇ has also been linked to infectious diseases (review: Beutler et al. Crit. Care Med. 1993, 21, 5423; Degre. Biotherapy 1996, 8, 219) including tuberculosis (Rook et al. Med. Malad. Infect. 1996, 26, 904), Helicobacter pylori infection during peptic ulcer disease (Beales et al.
- HIV human immunodeficiency virus
- Poli. Proc. Nat'l. Acad. Sci. USA 1990, 87, 782; Vyakaram et al. AIDS 1990, 4, 21; Badley et al. J. Exp. Med. 1997, 185, 55 human immunodeficiency virus
- p38 inhibitors will be useful in treatment of the above listed diseases.
- MM matrix-destroying metalloprotease
- TRIPs tissue inhibitors of metalloproteinases
- aneurysmal aortic disease (Vine et al. Clin. Sci. 1991, 81, 233), birth control (Woessner et al. Steroids 1989, 54, 491), dystrophobic epidermolysis bullosa (Kronberger et al. J. Invest. Dermatol. 1982, 79, 208), degenerative cartilage loss following traumatic joint injury, osteopenias mediated by MMP activity, tempero mandibular joint disease, and demyelating diseases of the nervous system (Chantry et al. J. Neurochem. 1988, 50, 688).
- p38 inhibitors will be useful in treatment of the above listed diseases.
- Inhibitors of p38 are active in animal models of TNF ⁇ production, including a murine lipopolysaccharide (LPS) model of TNF ⁇ production. Inhibitors of p38 are active in a number of standard animal models of inflammatory diseases, including carrageenan-induced edema in the rat paw, arachadonic acid-induced edema in the rat paw, arachadonic acid-induced peritonitis in the mouse, fetal rat long bone resorption, murine type II collagen-induced arthritis, and Fruend's adjuvant-induced arthritis in the rat. Thus, inhibitors of p38 will be useful in treating diseases mediated by one or more of the above-mentioned cytokines and/or proteolytic enzymes.
- LPS murine lipopolysaccharide
- arthritic diseases The primary disabling effect of osteoarthritis, rheumatoid arthritis and septic arthritis is the progressive loss of articular cartilage and thereby normal joint function. No marketed pharmaceutical agent is able to prevent or slow this cartilage loss, although nonsteroidal antiinflammatory drugs (NSAIDs) have been given to control pain and swelling. The end result of these diseases is total loss of joint function which is only treatable by joint replacement surgery. P38 inhibitors will halt or reverse the progression of cartilage loss and obviate or delay surgical intervention.
- NSAIDs nonsteroidal antiinflammatory drugs
- This invention provides compounds, generally described as aryl ureas, including both aryl and heteroaryl analogues, which inhibit p38 mediated events and thus inhibit the production of cytokines (such as TNF ⁇ , IL-1 and IL-8) and proteolytic enzymes (such as MMP-1 and MMP-3).
- the invention also provides a method of treating a cytokine mediated disease state in humans or mammals, wherein the cytokine is one whose production is affected by p38. Examples of such cytokines include, but are not limited to TNF ⁇ , IL-1 and IL-8.
- the invention also provides a method of treating a protease mediated disease state in humans or mammals, wherein the protease is one whose production is affected by p38. Examples of such proteases include, but are not limited to collagenase (MMP-1) and stromelysin (MMP-3).
- these compounds are useful therapeutic agents for such acute and chronic inflammatory and/or immunomodulatory diseases as rheumatoid arthritis, osteoarthritis, septic arthritis, rheumatic fever, bone resorption, postmenopausal osteoperosis, sepsis, grain negative sepsis, septic shock, endotoxic shock, toxic shock syndrome, systemic inflammatory response syndrome, inflammatory bowel diseases including Crohn's disease and ulcerative colitis, Jarisch-Herxheimer reactions, asthma, adult respiratory distress syndrome, acute pulmonary fibrotic diseases, pulmonary sarcoidosis, allergic respiratory diseases, silicosis, coal worker's pneumoconiosis, alveolar injury, hepatic failure, liver disease during acute inflammation, severe alcoholic hepatitis, malaria including Plasmodium falciparum malaria and cerebral malaria, non-insulin-dependent diabetes mellitus (NIDDM), congestive heart failure, damage following heart disease, atherosclerosis, Alzheimer's disease, acute ence
- HIV human immunodeficiency virus
- the present invention therefore, provides compounds generally described as aryl ureas, including both aryl and heteroaryl analogues, which inhibit the p38 pathway.
- the invention also provides a method for treatment of p38-mediated disease states in humans or mammals, e.g., disease states mediated by one or more cytokines or proteolytic enzymes produced and/or activated by a p38 mediated process.
- the invention is directed to compounds and methods for the treatment of diseases mediated by p38 kinase comprising administering a compound of Formula I
- B is a substituted or unsubstituted, up to tricyclic aryl or heteroaryl moiety of up to 30 carbon atoms with at least one 6-member aromatic structure containing 0-4 members of the group consisting of nitrogen, oxygen and sulfur, wherein if B is substituted, it is substituted by one or more substituents selected from the group consisting of halogen, up to per-halo, and W n , wherein n is 0-3 and each W is independently selected from the group consisting of —CN, —CO 2 R 7 , —C(O)NR 7 R 7 , —C(O)—R 7 , —NO 2 , —OR 7 , —SR 7 , —NR 7 R 7 , —NR 7 C(O)OR 7 , —NR 7 C(O)R 7 , C 1 -C 10 alkyl, C 2-10 -alkenyl, C 1-10 -alkoxy, C 3 -C 10 cycloalkyl, C
- Ar is a 5-10 member aromatic structure containing 0-2 members of the group consisting of nitrogen, oxygen and sulfur, which is unsubstituted or substituted by halogen up to per-halo and optionally substituted by Z n1 wherein n1 is 0 to 3 and each Z is independently selected from the group consisting of —CN, —CO 2 R 7 , —C(O)NR 7 R 7 , —C(O)—NR 7 , —C(O)R 7 , —NO 2 , —OR 7 , —SR 7 , —NR 7 R 7 , —NR 7 C(O)OR 7 , —NR 7 C(O)R 7 , C 1 -C 10 alkyl, C 3 -C 10 cycloalkyl, C 6 -C 14 aryl, C 3 -C 13 hetaryl, C 7 -C 24 alkaryl, C 4 -C 23 alkheteroaryl, substituted C 1 -C 10 alky
- the compounds of formula I are of formula Ia
- R 3 , R 4 , R 5 and R 6 are each independently H, halogen, C 1-10 -alkyl optionally substituted by halogen, up to perhalo, C 1-10 -alkoxy, optionally substituted by at least one hydroxy group or by halogen, up to perhalo; C 6-12 aryl, optionally substituted by C 1-10 alkoxy or halogen, C 5-12 hetaryl, optionally substitued by C 1-10 alkyl C 1-10 alkoxy or halogen; NO 2 , SO 2 F or —SO 2 CH p X 3-p ; —COOR 1 ; —OR 1 CONHR 1 ; —NHCOR 1 ; —SR 1 ; phenyl optionally substituted by halo or C 1-10 -alkoxy; NH 2 ; —N(SO 2 R 1 ) 2 , furyloxy,
- R 4 , R 5 or R 6 can be —X—Y
- suitable hetaryl groups B include, but are not limited to, 5-12 carbon-atom aromatic rings or ring systems containing 1-3 rings, at least one of which is aromatic, in which one or more, e.g., 1-4 carbon atoms in one or more of the rings can be replaced by oxygen, nitrogen or sulfur atoms.
- Each ring typically has 3-7 atoms.
- B can be 2- or 3-furyl, 2- or 3-thienyl, 2- or 4-triazinyl, 1-, 2- or 3-pyrrolyl, 1-, 2-, 4- or 5-imidazolyl, 1-, 3-, 4- or 5-pyrazolyl, 2-, 4- or 5-oxazolyl, 3-, 4- or 5-isoxazolyl, 2-, 4- or 5-thiazolyl, 3-, 4- or 5-isothiazolyl, 2-, 3- or 4-pyridyl, 2-, 4-, 5- or 6-pyrimidinyl, 1,2,3-triazol-1-, -4- or 5-yl, 1,2,4-triazol-1-, -3- or -5-yl, 1- or 5-tetrazolyl, 1,2,3-oxadiazol-4- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl, 1,3,4-thiadiazol-2- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl, 1,3,4-thiadiazol-2
- B can be 4-methyl-phenyl, 5-methyl-2-thienyl, 4-methyl-2-thienyl, 1-methyl-3-pyrryl, 1-methyl-3-pyrazolyl, 5-methyl-2-thiazolyl or 5-methyl-1,2,4-thiadiazol-2-yl.
- Suitable alkyl groups and alkyl portions of groups, e.g., alkoxy, etc. throughout include methyl, ethyl, propyl, butyl, etc., including all straight-chain and branched isomers such as isopropyl, isobutyl, sec-butyl, tert-butyl, etc.
- Suitable aryl groups include, for example, phenyl and 1- and 2-naphthyl.
- cycloalkyl refers to cyclic structures with or without alkyl substitutents such that, for example, “C 4 cycloakyl” includes methyl substituted cyclopropyl groups as well as cyclobutyl groups.
- cycloalkyl also includes saturated heterocyclic groups.
- Suitable halogen groups include F, Cl, Br, and/or I, from one to per-substitution (i.e. all H atoms on a group replaced by a halogen atom) being possible where an alkyl group is substituted by halogen, mixed substitution of halogen atom types also being possible on a given moiety.
- Preferred compounds of formula I include those where R 3 is H, halogen or C 1-10 -alkyl, optionally substituted by halogen, up to perhalo, NO 2 , —SO 2 F, —SO 2 CHF 2 ; or —SO 2 CF 3 ; R 4 is H, C 1-10 -alkyl, C 1-10 -alkoxy, halogen or NO 2 ; R 5 is H, C 1-10 -alkyl optionally substituted by halogen, up to perhalo; R 6 is H, hydroxy, C 1-10 -alkoxy, optionally substituted by at least one hydroxy group; —COOR 1 ; —OR 1 CONHR 1 ; —NHCOR 1 ; —SR 1 ; phenyl optionally substituted by halo or C 1-10 -alkoxy; NH 2 ; —N(SO 2 R 1 ) 2 , furyloxy,
- R 6 is t-butyl or CF 3 and R 6 is —OCH 3 .
- R 4′ is C 1-10 -alkyl or halogen;
- R 5′ is H, C 1-10 -alkyl, halogen, CF 3 , halogen, NO 2 or NH 2 ;
- R 6′ is H, C 1-10 -alkyl, halogen, —NHCOCH 3 , —N(CH 3 )COCH 3 , NO 2 ,
- the invention also relates to compounds per se, of formula II
- R 3 , R 4 , R 5 and R 6 are each independently H, halogen, C 1-10 -alkyl optionally substituted by halogen up to perhalo, C 1-10 -alkoxy, optionally substituted by at least one hydroxy group or halogen, up to perhalo; NO 2 , SO 2 F or —SO 2 CH n X 3-n , C 1-10 -alkoxy; —COOR 1 ; —OR 1 CONHR 1 ; —NHCOR 1 ; —SR 1 ; C 6-12 aryl, optionally substituted by C 1-10 -alkyl, C 1-10 alkoxy or halogen, C 5-12 hetaryl, optionally substitued by C 1-10 alkyl, C 1-10 alkoxy or halogen; NH 2 ; —N(SO 2 R 1 ) 2 ; furyloxy;
- R 6 is phenyl substituted by alkoxy or halogen
- the compounds have a pKa greater than 10, e.g., greater than 12, preferably greater than 15.
- Preferred 5-tert-butylphenyl ureas are:
- Suitable pharmaceutically acceptable salts are well known to those skilled in the art and include basic salts of inorganic and organic acids, such as hydroebtoric acid, hydrobromic acid, sulphuric acid, phosphoric acid, methanesulphonic acid, sulphonic acid, acetic acid, trifluoroacetic acid, malic acid, tartaric acid, citric acid, lactic acid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic acid, phenylacetic acid, and mandelic acid.
- basic salts of inorganic and organic acids such as hydroebtoric acid, hydrobromic acid, sulphuric acid, phosphoric acid, methanesulphonic acid, sulphonic acid, acetic acid, trifluoroacetic acid, malic acid, tartaric acid, citric acid, lactic acid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic
- pharmaceutically acceptable salts include acid salts of inorganic bases, such as salts containing alkaline cations (e.g., Li + Na + or K + ), alkaline earth cations (e.g., Mg +2 , Ca +2 or Ba +2 ), the ammonium cation, as well as acid salts of organic bases, including aliphatic and aromatic substituted ammonium, and quaternary ammonium cations, such as those arising from protonation or peralkylation of triethylamine, N,N-diethylamine, N,N-dicyclohexylamine, pyridine, N,N-dimethylaminopyridine (DMAP), 1,4-diazabiclo[2.2.2]octane (DABCO), 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU).
- a number of the compounds of Formula I possess asymmetric carbons and can therefore exist in racemic and optically active forms. Methods of separation of enantiomeric and diastereomeric mixtures are well known to one skilled in the art.
- the present invention encompasses any isolated racemic or optically active form of compounds described in Formula I which possess p38 kinase inhibitory activity.
- the compounds of Formula I may be prepared by use of known chemical reactions and procedures, some from starting materials which are commercially available, Nevertheless, the following general preparative methods are presented to aid one of skill in the art in synthesizing these compounds, with more detailed particular examples being presented in the experimental section describing the working examples.
- Nitroaryls are commonly formed by electrophilic aromatic nitration using HNO 3 , or an alternative NO 2 + source. Nitroaryls may be further elaborated prior to reduction. Thus, nitroaryls substituted with
- potential leaving groups may undergo substitution reactions on treatment with nucleophiles, such as thiolate (exemplified in Scheme II) or phenoxide. Nitroaryls may also undergo Ullman-type coupling reactions (Scheme II).
- the invention also includes pharmaceutical compositions including a compound of Formula I, and a physiologically acceptable carrier.
- the compounds may be administered orally, topically, parenterally, by inhalation or spray, vaginally, rectally or sublingually in dosage unit formulations.
- administration by injection includes intravenous, intramuscular, subcutaneous and parenteral injections, as well as use of Infusion techniques.
- Dermal administration may include topical application or transdermal administration.
- One or more compounds may be present in association with one or more non-toxic pharmaceutically acceptable carriers and if desired other active ingredients.
- compositions intended for oral use may be prepared according to any suitable method known to the art for the manufacture of pharmaceutical compositions.
- Such compositions may contain one or more agents selected from the group consisting of diluents, sweetening agents, flavoring agents, coloring agents and preserving agents in order to provide palatable preparations.
- Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients which are suitable for the manufacture of tablets.
- excipients may be, for example, inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, corn starch, or alginic acid; and binding agents, for example magnesium stearate, stearic acid or talc.
- the tablets may be uncoated or they may be coated by known techniques to delay disintegration and adsorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
- a time delay material such as glyceryl monostearate or glyceryl distearate may be employed.
- These compounds may also be prepared in solid, rapidly released form.
- Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil.
- an inert solid diluent for example, calcium carbonate, calcium phosphate or kaolin
- water or an oil medium for example peanut oil, liquid paraffin or olive oil.
- Aqueous suspensions containing the active materials in admixture with excipients suitable for the manufacture of aqueous suspensions may also be used.
- excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxypropyl-methylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents may be a naturally-occurring phosphatide, for example, lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol such as polyoxyethylene sorbitol monooleate, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbit
- the aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl, p-hydroxybenzoate, one or more coloring agents, one or more flavoring agents, and one or more sweetening agents, such as sucrose or saccharin.
- preservatives for example ethyl, or n-propyl, p-hydroxybenzoate
- coloring agents for example ethyl, or n-propyl, p-hydroxybenzoate
- coloring agents for example ethyl, or n-propyl, p-hydroxybenzoate
- flavoring agents for example ethyl, or n-propyl, p-hydroxybenzoate
- sweetening agents such as sucrose or saccharin.
- Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, suspending agent and one or more preservatives.
- a dispersing or wetting agent e.g., talc, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol,
- the compounds may also be in the form of non-aqueous liquid formulations, e.g., oily suspensions which may be formulated by suspending the active ingredients in a vegetable oil, for example arachis oil, olive oil, sesame oil or peanut oil, or in a mineral oil such as liquid paraffin.
- oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those set forth above, and flavoring agents may be added to provide palatable oral preparations. These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
- Compounds of the invention may also be administrated transdermally using methods known to those skilled in the art (see, for example: Chien; “Transdermal Controlled Systemic Medications”; Marcel Dekker, Inc.; 1987. Lipp et al. WO94/04157 3 Mar. 1994).
- a solution or suspension of a compound of Formula I in a suitable volatile solvent optionally containing penetration enhancing agents can be combined with additional additives known to those skilled in the art, such as matrix materials and bacteriocides. After sterilization, the resulting mixture can be formulated following known procedures into dosage forms.
- a solution or suspension of a compound of Formula I may be formulated into a lotion or salve.
- Suitable solvents for processing transdermal delivery systems are known to those skilled in the art, and include lower alcohols such as ethanol or isopropyl alcohol, lower ketones such as acetone, lower carboxylic acid esters such as ethyl acetate, polar ethers such as tetrahydrofuran, lower hydrocarbons such as hexane, cyclohexane or benzene, or halogenated hydrocarbons such as dichloromethane, chloroform, trichlorotrifluoroethane, or trichlorofluoroethane.
- Suitable solvents may also include mixtures of one or more materials selected from lower alcohols, lower ketones, lower carboxylic acid esters, polar ethers, lower hydrocarbons, halogenated hydrocarbons.
- Suitable penetration enhancing materials for transdermal delivery system include, for example, monohydroxy or polyhydroxy alcohols such as ethanol, propylene glycol or benzyl alcohol, saturated or unsaturated C 8 -C 18 fatty alcohols such as lauryl alcohol or cetyl alcohol, saturated or unsaturated C 8 -C 18 fatty acids such as stearic acid, saturated or unsaturated fatty esters with up to 24 carbons such as methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl isobutyl tertbutyl or monoglycerin esters of acetic acid, capronic acid, lauric acid, myristinic acid, stearic acid, or palmitic acid, or diesters of saturated or unsaturated dicarboxylic acids with a total of up to 24 carbons such as diisopropyl adipate, diisobutyl adipate, diisopropy
- Additional penetration enhancing materials include phosphatidyl derivatives such as lecithin or cephalin, terpenes, amides, ketones, ureas and their derivatives, and ethers such as dimethyl isosorbid and diethyleneglycol monoethyl ether.
- Suitable penetration enhancing formulations may also include mixtures of one or more materials selected from monohydroxy or polyhydroxy alcohols, saturated or unsaturated C 1 -C 18 fatty alcohols, saturated or unsaturated C 1 -C 18 fatty acids, saturated or unsaturated fatty esters with up to 24 carbons, diesters of saturated or unsaturated discarboxylic acids with a total of up to 24 carbons, phosphatidyl derivatives, terpenes, amides, ketones, ureas and their derivatives, and ethers.
- Suitable binding materials for transdermal delivery systems include polyacrylates, silicones, polyurethanes, block polymers, styrenebutadiene coploymers, and natural and synthetic rubbers.
- Cellulose ethers, derivatized polyethylenes, and silicates may also be used as matrix components. Additional additives, such as viscous resins or oils may be added to increase the viscosity of the matrix.
- Phamaceutical compositions of the invention may also be in the form of oil-in-water emulsions.
- the oil phase may be a vegetable oil, for example olive oil or arachis oil, or a mineral oil, for example liquid paraffin or mixtures of these.
- Suitable emulsifying agents may be naturally-occurring gums, for example gum acacia or gum tragacanth, naturally-occurring phosphatides, for example soy bean, lecithin, and esters or partial esters derived from fatty acids and hexitol anhydrides, for example sorbitan monooleate, and condensation products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monooleate.
- the emulsions may also contain sweetening and flavoring agents.
- Syrups and elixirs may be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. Such formulations may also contain a demulcent, a preservative and flavoring and coloring agents.
- sweetening agents for example glycerol, propylene glycol, sorbitol or sucrose.
- Such formulations may also contain a demulcent, a preservative and flavoring and coloring agents.
- the compounds may also be administered in the form of suppositories for rectal administration of the drug.
- These compositions can be prepared by mixing the drug with a suitable non-irritating excipient which is solid at ordinary temperatures but liquid at the rectal or vaginal temperature and will therefore melt in the rectum or vagina to release the drug.
- suitable non-irritating excipient include cocoa butter and polyethylene glycols.
- the daily oral dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight.
- the daily dosage for administration by injection including intravenous, intramuscular, subcutaneous and parenteral injections, and use of infusion techniques will preferably be from 0.01 to 200 mg/Kg of total body weight.
- the daily vaginal dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight.
- the daily rectal dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight.
- the transdermal concentration will preferably be that required to maintain a daily dose of from 0.01 to 200 mg/Kg.
- the daily topical dosage regimen will preferably be from 0.1 to 200 mg administered between one to four times daily.
- the daily inhalation dosage regimen will preferably be from 0.01 to 10 mg/Kg of total body weight.
- the particular method of administration will depend on a variety of factors, all of which are considered routinely when administering therapeutics. It will also be understood, however, that the specific dose level for a given patient depends on a variety of factors, including specific activity of the compound administered, the age of the patient, the body weight of the patient, the general health of the patient, the gender of the patient, the diet of the patient, time of administration, route of administration, rate of excretion, drug combination, and the severity of the condition undergoing therapy, etc.
- the optimal course of treatment i.e., the mode of treatment and the daily number of doses of a compound of Formula I or a pharmaceutically acceptable salt thereof given for a defined number of days, can be ascertained by those skilled in the art using conventional course of treatment tests.
- the compounds of FIG. I are producible from known compounds (or from starting materials which, in turn, are producible from known compounds), e.g., through the general preparative methods shown above,
- the activity of a given compound to inhibit raf kinase can be routinely assayed, e.g., according to procedures disclosed below.
- the following examples are for illustrative purposes only and are not intended, nor should they be construde to limit the invention in any way.
- TLC Thin-layer chromatography
- a) ultraviolet illumination (b) exposure to iodine vapor, (c) immersion of the plate in a 10% solution of phosphomolybdic acid in ethanol followed by heating, (d) immersion of the plate in a cerium sulfate solution followed by heating, and/or (e) immersion of the plate in an acidic ethanol solution of 2,4-dinitrophenylhydrazine followed by heating.
- Column chromatography flash chromatography
- Electron impact ionization was performed with electron energy of 70 eV and a trap current of 300 ⁇ A.
- Liquid-cesium secondary ion mass spectra FAB-MS
- FAB-MS Liquid-cesium secondary ion mass spectra
- CI-MS Chemical ionization mass spectra
- HPLC-electrospray mass spectra were obtained using a Hewlett-Packard 1100 HPLC equipped with a quaternary pump, a variable wavelength detector, a C-18 column, and a Finnigan LCQ ion trap mass spectrometer with electrospray ionization.
- Spectra were scanned from 120-800 amu using a variable ion time according to the number of ions in the source.
- Gas chromatography-ion selective mass spectra (GC-MS) were obtained with a Hewlett Packard 5890 gas chromatograph equipped with an HP-1 methyl silicone column (0.33 mM coating; 25 m ⁇ 0.2 mm) and a Hewlett Packard 5971 Mass Selective Detector (ionization energy 70 eV). Elemental analyses are conducted by Robertson Microlit Labs, Madison N.J.
- Step 1 4-tert-Butyl-1-(2,5-dioxo-1-pyrrolidinyl)-2-nitrobenzene: To a solution of 4-tert-butyl-2-nitroaniline (1.04 g, 5.35 mmol) in xylene (25 mL) was added succinic anhydride (0.0535 g, 5.35 mmol) and triethylamine (0.75 mL, 5.35 mmol). The reaction mixture was heated at the reflux temp. for 24 h, cooled to room temp. and diluted with Et 2 O (25 mL).
- Step 2 5-tert-Butyl-2-(2,5-dioxo-1-pyrrolidinyl)aniline: To a solution of 4-tert-butyl-1-(2,5-dioxo-1-pyrrolidinyl)-2-nitrobenzene (1.1 g, 4.2 mmol in EtOAc (25 mL) was added a 10% Pd/C (0.1 g). The resulting slurry was placed under a H 2 atmosphere using 3 cycles of an evacuate-quench protocol and was allowed to stir under a H 2 atmosphere for 8 h. The reaction mixture was filtered through a pad of Celite® and the residue was washed with CHCl 3 .
- Step 1 4-tert-Butyl-1-(3-tetrahydrofuranyloxy)-2-nitrobenzene: To a solution of 4-tert-butyl-2-nitrophenol (1.05 g, 5.4 mmol) in anh THF (25 mL) was added 3-hydroxytetrahydrofuran (0.47 g, 5.4 mmol) and triphenylphosphine (1.55 g, 5.9 mmol) followed by diethyl azodicarboxylate (0.93 ml, 5.9 mmol) and the mixture was allowed to stir at room temp. for 4 h.
- Step 2 5-tert-Butyl-2-(3-tetrahydrofuranyloxy) aniline: To a solution of 4-tert-butyl-1-(3-tetrahydrofuranyloxy)-2-nitrobenzene (1.17 g, 4.4 mmol) in EtOAc (25 mL) was added 10% Pd/C (0.1). The resulting slurry was placed under a H 2 atmosphere using 3 cycles of an evacuate-quench protocol and was allowed to stir under a H 2 atmosphere for 8 h. The reaction mixture was filtered through a pad of Celite® and washed with CHCl 3 .
- Step 1 2-Methoxy-5-(fluorosulfonyl)acetanilide: Acetic anhydride (0.90 mL, 9.6 mmol) was added to a solution of 4-methoxymetanilyl fluoride (1.0 g, 4.8 mmol) in pyridine (15 mL). After being stirred at room temp. for 4 h, the reaction mixture was concentrated under reduced pressure.
- Step 2 2-Methoxy-5-(trifluoromethanesulfonyl)acetanilide: To an ice-cooled suspension of tris(dimethylamino)sulfonium difluorotrimethylsiliconate (0.094 g, 0.34 mmol) in THF (4 mL) was added a solution of (trifluoromethyl)trimethylsilane (1.0 mL, 6.88 mmol) in THF (3 mL) followed by a solution of 2-methoxy-5-(fluorosulfonyl)acetanilide (0.85 g, 3.44 mmol) in THF (3 mL). The reaction mixture was stirred for 2 h on an ice bath, then was allowed to warm to room temp.
- Step 1 2-Nitro-5-tert-butylphenol; A mixture of timing nitric acid (3.24 g, 77.1 mmol) in glacial HOAc (10 mL) was added dropwise to a solution of m-tert-butylphenol (11.58 g, 77.1 mmol) in glacial HOAc (15 mL) at 0° C. The mixture was allowed to stir at 0° C. for 15 min then warmed to room temp. After 1 h the mixture was poured into ice water (100 mL) and extracted with Et 2 O (2 ⁇ 50 mL). The organic layer was washed with a saturated NaCl solution (100 mL), dried (MgSO 4 ) and concentrated in vacuo.
- Step 3 4-tert-Butyl-2-methoxyaniline: A solution of 2-nitro-5-tert-butylanisole (3.95 g, 18.9 mmol) in MeOH (65 mL) and added to a flask containing 10% Pd/C in MeOH (0.400 g), then placed under a H 2 atmosphere (balloon).
- Step 1 Methyl 2-Nitro-4-(trifluoromethyl)benzoate: To a solution of 2-nitro-4-(trifluoromethyl)benzoic acid (4.0 g, 17.0 mmol) in MeOH (150 mL) at room temp was added conc H 2 SO 4 (2.5 mL). The mixture was heated at the reflux temp for 24 h., cooled to room temp and concentrated in vacuo. The residue was diluted with water (100 mL) and extracted with EtOAc (2 ⁇ 100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO 4 ), concentrated in vacuo.
- Step 2 Methyl 2-Amino-4-(trifluoromethyl)benzoate; A solution of methyl 2-nitro-4-(trifluoromethyl)benzoate (3.90 g, 15.7 mmol) in EtOAc (100 mL) and added to a flask containing 10% Pd/C (0.400 mg) in EtOAc (10 mL), then placed under a H 2 atmosphere (balloon).
- Step 1 Methyl 3-Methoxy-2-naphthoate, A slurry of methyl 3-hydroxy-2-naphthoate (10.1 g, 50.1 mmol) and K 2 CO 3 (7.96 g, 57.6 mmol) in DMF (200 mL) was stirred at room temp for 15 min, then treated with iodomethane (3.43 mL, 55.1 mmol). The mixture was allowed to stir at room temp overnight, then was treated with water (200 ml). The resulting mixture was extracted with EtOAc (2 ⁇ 200 mL).
- Step 2 3-Methoxy-2-naphthoic Acid: A solution of methyl 3-methoxy-2-naphthoate (6.28 g, 29.10 mmol) and water (10 mL) in MeOH (100 mL) at room temp was treated with a 1 N NaOH solution (33.4 mL, 33.4 mmol). The mixture was heated at the reflux temp for 3 h, cooling to room temp, and made acidic with a 10% citric acid solution. The resulting solution was extracted with EtOAc (2 ⁇ 100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO 4 ) and concentrated in vacuo.
- benzyl alcohol (2.06 mL, 20 mmol) was added via syringe. The mixture was then warmed to 80° C. overnight. The resulting mixture was cooled to room temp., quenched with a 10% citric acid solution, and extracted with EtOAc (2 ⁇ 100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO 4 ), and concentrated in vacuo.
- Step 1 5-tert-Butyl-2-(trifluoromethanesulfonyl)oxy-1-nitrobenzene: To an ice cold solution of 4-tert-butyl-2-nitrophenol (6.14 g, 31.5 mmol) and pyridine (10 mL, 125 mmol) in CH 2 Cl 2 (50 mL) was slowly added trifluoromethanesulfonic anhydride (10 g, 35.5 mmol) via syringe. The reaction mixture was stirred for 15 min, then allowed to warm up to room temp. and diluted with CH 2 Cl 2 (100 mL).
- Step 2 5-tert-Butyl-2-(3-fluorophenyl)-1-nitrobenzene: A mixture of 3-fluorobenzeneboronic acid (3.80 g, 27.5 mmol), KBr (2.43 g, 20.4 mmol), K 3 PO 4 (6.1 g, 28.8 mmol), and Pd(PPh 3 ) 4 (1.0 g, 0.9 mmol) was added to a solution of 5-tert-butyl-2-(trifluoromethanesulfonyl)oxy-1-nitrobenzene (6.0 g, 18.4 mmol) in dioxane (100 mL). The reaction mixture was heated at 80° C. for 24 h, at which time TLC indicated complete reaction.
- Step 3 5-tert-Butyl-2-(3-fluorophenyl)aniline: To a solution of 5-tert-butyl-2-(3-fluorophenyl)-1-nitrobenzene (3.5 g, 12.8 mmol) and EtOH (24 mL) in EtOAc (96 mL) was added 5% Pd/C (0.350 g) and the resulting slurry was stirred under a H 2 atmosphere for 24 h, at which time TLC indicated complete consumption of starting material.
- Step 1 4-(4-(2-Propoxycarbonylamino)phenyl)methylaniline: A solution of di-tert-butyl dicarbonate (2.0 g, 9.2 mmol) and 4,4′-methylenedianiline (1.8 g, 9.2 mmol) in DMF (100 mL) was heated at the reflux temp. for 2 h, then cooled to room temp. This mixture was diluted with EtOAc (200 mL) sequentially washed with a saturated NH 4 Cl (200 mL) and a saturated NaCl solution (100 mL), and dried (MgSO 4 ).
- Step 2 4-(4-(2-Propoxycarbonylamino)phenyl)methyl-1-nitrobenzene: To an ice cold solution of 4-(4-(2-propoxycarbonylamino)phenyl)methylaniline (1.05 g, 3.5 mmol) in CH 2 Cl 2 (15 mL) was added m-CPBA (1.2 g, 7.0 mmol). The reaction mixture was slowly allowed to warm to room temp. and was stirred for 45 min, at which time TLC indicated disappearance of starting material. The resulting mixture was diluted with EtOAc (50 mL), sequentially washed with a 1M NaOH solution (50 mL) and a saturated NaCl solution (50 mL), and dried (MgSO 4 ). The residue was purified by flash chromatography (20% EtOAc/80% hexane) to give the desired nitrobenzene (0.920 g): FAB-MS m/z 328 (M + ).
- Step 3 4-(4-Nitrophenyl)methylaniline: To a solution of 4-(4-(2-propoxycarbonylamino)phenyl)methyl-1-nitrobenzene (0.920 g, 2.8 mmol) in dioxane (10 mL) was added a conc. HCl solution (4.0 mL) and the resulting mixture was heated at 80° C. for 1 h at which time TLC indicated disappearance of starting material. The reaction mixture was cooled to room temp.
- Step 1 4-( ⁇ -Bromoacetyl)morpholine: To an ice cold solution of morpholine (2.17 g, 24.9 mmol) and diisopropylethylamine (3.21 g, 24.9 mmol) in CH 2 Cl 2 (70 mL) was added a solution of bromoacetyl bromide (5.05 g, 25 mmole) in CH 2 Cl 2 (8 mL) via syringe. The resulting solution was kept at 0° C. for 45 min, then was allowed to warm to room temp.
- Step 2 2-(N-Morpholinylcarbonyl)methoxy-5-tert-butyl-1-nitrobenzene: A slurry of 4-tert-butyl-2-nitrophenol (3.9 g, 20 mmol) and K 2 CO 3 (3.31 g, 24 mmol) in DMF (75 mL) was stirred at room temp. for 15 minutes, then a solution of 4-( ⁇ -bromoacetyl)morpholine (4.16 g, 20 mmol) in DMF (10 mL) was added. The reaction was allowed to stir at room temp.
- Step 1 5-tert-Butyl-2-(2-hydroxyethoxy)-1-nitrobenzene: A solution of 4-tert-butyl-2-nitrophenol (30 g, 0.15 mol) and tetra-n-butylammonium fluoride (0.771 g, 3.0 mmol) in ethylene carbonate (10.24 mL. 0.15 mol) was heated at 150° C. for 18 hi, then cooled to room temp. and separated between water (50 mL) and CH 2 Cl 2 (50 mL). The organic layer was dried (MgSO 4 ) and concentrated under reduced pressure.
- Step 3 5-tert-Butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)aniline: To a mixture of 5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)-1-nitrobenzene (0.290 g, 0.86 mmol) and 5% Pd/C (0.058 g) in MeOH (2 mL) was ammonium formate (0.216 g, 3.42 mmol), and the resulting mixture was stirred at room temp. for 12 h, then was filtered through a pad of Celite® with the aid of EtOH.
- Step 1 1-Methoxy-4-(4-nitrophenoxy)benzene: To a suspension of NaH (95%, 1.50 g, 59 mmol) in DMF (100 mL) at room temp. was added dropwise a solution of 4-methoxyphenol (7.39 g, 59 mmol) in DMF (50 mL). The reaction was stirred 1 h, then a solution of 1-fluoro-4-nitrobenzene (7.0 g, 49 mmol) in DMF (50 mL) was added dropwise to form a dark green solution. The reaction was heated at 95° C. overnight, then cooled to room temp., quenched with H 2 O, and concentrated in vacuo.
- Step 2 4-(4-Methoxyphenoxy)aniline: To a solution of 1-methoxy-4-(4-nitrophenoxy)benzene (12.0 g, 49 mmol) in EtOAc (250 mL) was added 5% Pt/C (1.5 g) and the resulting slurry was shaken under a H 2 atmosphere (50 psi) for 18 h.
- Step 1 3-(Trifluoromethyl)-4-(4-pyridinylthio)nitrobenzene: A solution of 4-mercaptopyridine (2.8 g, 24 mmoles), 2-fluoro-5-nitrobenzotrifluoride (5 g, 23.5 mmoles), and potassium carbonate (6.1 g, 44.3 mmoles) in anhydrous DMF (80 mL) was stirred at room temperature and under argon overnight. TLC showed complete reaction. The mixture was diluted with Et 2 O (100 mL) and water (100 mL) and the aqueous layer was back-extracted with Et 2 O (2 ⁇ 100 mL).
- Step 2 3-(Trifluoromethyl)-4-(4-pyridinylthio)aniline.
- a slurry of 3-trifluoromethyl-4-(4-pyridinylthio)nitrobenzene (3.8 g, 12.7 mmol), iron powder (4.0 g, 71.6 mmol), acetic acid (100 mL), and water (1 mL) were stirred at room temp. for 4 h.
- the mixture was diluted with Et 2 O (100 mL) and water (100 mL).
- the aqueous phase was adjusted to pH 4 with a 4 N NaOH solution.
- the combined organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO 4 ), and concentrated under reduced pressure.
- Step 1 4-(2-(4-Phenyl)thiazolyl)thio-1-nitrobenzene: A solution of 2-mercapto-4-phenylthiazole (4.0 g, 20.7 mmoles) in DMF (40 mL) was treated with 1-fluoro-4-nitrobenzene (2.3 ml, 21.7 mmoles) followed by K 2 CO 3 (3.18 g, 23 mmol), and the mixture was heated at approximately 65° C. overnight. The reaction mixture was then diluted with EtOAc (100 mL), sequentially washed with water (100 mL) and a saturated NaCl solution (100 mL), dried (MgSO 4 ) and concentrated under reduced pressure.
- EtOAc 100 mL
- Step 2 4-(2-(4-Phenyl)thiazolyl)thioaniline: 4-(2-(4-Phenyl)thiazolyl)thio-1-nitro-benzene was reduced in a manner analagous to that used in the preparation of 3-(trifluoromethyl)-4-(4-pyridinylthio)aniline: TLC (25% EtOAc/75% hexane) R ⁇ 0.18; 1 H-NMR (CDCl 3 ) ⁇ 3.89 (br s, 2H), 6.72-6.77 (m, 2H), 7.26-7.53 (m, 6H), 7.85-7.89 (m, 2H).
- Step 1 4-(6-Methyl-3-pyridinyloxy)-1-nitrobenzene: to a solution of 5-hydroxy-2-methylpyridine (5.0 g, 45.8 mmol) and 1-fluoro-4-nitrobenzene (6.5 g, 45.8 mmol) in anh DMF (50 mL) was added K 2 CO 3 (13.0 g, 91.6 mmol) in one portion. The mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The resulting mixture was poured into water (200 mL) and extracted with EtOAc (3 ⁇ 150 mL).
- Step 2 4-(6-Methyl-3-pyridinyloxy)aniline: A solution of 4-(6-methyl-3-pyridinyloxy)-1-nitrobenzene (4.0 g, 17.3 mmol) in EtOAc (150 mL) was added to 10% Pd/C (0.500 g, 0.47 mmol) and the resulting mixture was placed under a H 2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a tan solid (3.2 g, 92%): EI-MS m/z 200 (M + ).
- Step 1 4-(3,4-Dimethoxyphenoxy)-1-nitrobenzene: To a solution of 3,4-dimethoxyphenol (1.0 g, 6.4 mmol) and 1-fluoro-4-nitrobenzene (700 ⁇ L, 6.4 mmol) in anh DMF (20 mL) was added K 2 CO 3 (1.8 g, 12.9 mmol) in one portion. The mixture was heated at the reflux temp with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (100 mL) and extracted with EtOAc (3 ⁇ 100 mL).
- Step 2 4-(3,4-Dimethoxyphenoxy)aniline: A solution of 4-(3,4-dimethoxy-phenoxy)-1-nitrobenzene (0.8 g, 3.2 mmol) in EtOAc (50 mL) was added to 10% Pd/C (0.100 g) and the resulting mixture was placed under a H 2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a white solid (0.6 g, 75%): EI-MS m/z 245 (M + ).
- Step 1 3-(3-Pyridinyloxy)-1-nitrobenzene; To a solution of 3-hydroxypyridine (2.8 g, 29.0 mmol), 1-bromo-3-nitrobenzene (5.9 g, 29.0 mmol) and copper(I) bromide (5.0 g, 34.8 mmol) in anh DMF (50 mL) was added K 2 CO 3 (8.0 g, 58.1 mmol) in one portion. The resulting mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (200 mL) and extracted with EtOAc (3 ⁇ 150 mL).
- Step 2 3-(3-Pyridinyloxy)aniline: A solution of 3-(3-pyridinyloxy)-1-nitrobenzene (2.0 g, 9.2 mmol) in EtOAc (100 mL) was added to 10% Pd/C (0.200 g) and the resulting mixture was placed under a H 2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a red oil (1.6 g, 94%): EI-MS m/z 186 (M + ).
- Step 1 3-(5-Methyl-3-pyridinyloxy)-1-nitrobenzene: To a solution of 3-hydroxy-5-methylpyridine (5.0 g, 45.8 mmol), 1-bromo-3-nitrobenzene (12.0 g, 59.6 mmol) and copper(I) iodide (10.0 g, 73.3 mmol) in anh DMF (50 mL) was added K 2 CO 3 (13.0 g, 91.6 mmol) in one portion. The mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (200 mL) and extracted with EtOAc (3 ⁇ 150 mL).
- Step 2 3-(5-Methyl-3-pyridinyloxy)-1-nitrobenzene: A solution of 3-(5-methyl-3-pyridinyloxy)-1-nitrobenzene (1.2 g, 5.2 mmol) in EtOAc (50 mL) was added to 10% Pd/C (0.100 g) and the resulting mixture was placed under a H 2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a red oil (0.9 g, 86%): CI-MS m/z 201 ((M+H) + ).
- Step 1 5-Nitro-2-(4-methylphenoxy)pyridine: To a solution of 2-chloro-5-nitropyridine (6.34 g, 40 mmol) in DMF (200 mL) were added of 4-methylphenol (5.4 g, 50 mmol, 1.25 equiv) and K 2 CO 3 (8.28 g, 60 mmol, 1.5 equiv). The mixture was stirred overnight at room temp. The resulting mixture was treated with water (600 mL) to generate a precipitate.
- Step 2 5-Amino-2-(4-methylphenoxy)pyridine Dihydrochloride: A solution 5-nitro-2-(4-methylphenoxy)pyridine (6.94 g, 30 mmol, 1 eq) and EtOH (10 mL) in EtOAc (190 mL) was purged with argon then treated with 10% Pd/C (0.60 g). The reaction mixture was then placed under a H 2 atmosphere and was vigorously stirred for 2.5 h. The reaction mixture was filtered through a pad of Celite®. A solution of HCl in Et 2 O was added to the filtrate was added dropwise. The resulting precipitate was separated and washed with EtOAc to give the desired product (7.56 g, 92%): mp 208-210° C.
- Step 1 4-(3-Thienylthio)-1-nitrobenzene; To a solution of 4-nitrothiophenol (80% pure; 1.2 g, 6.1 mmol), 3-bromothiophene (1.0 g, 6.1 mmol) and copper(II) oxide (0.5 g, 3.7 mmol) in anhydrous DMF (20 mL) was added KOH (0.3 g, 6.1 mmol), and the resulting mixture was heated at 130° C. with stirring for 42 h and then allowed to cool to room temp. The reaction mixture was then poured into a mixture of ice and a 6N HCl solution (200 mL) and the resulting aqueous mixture was extracted with EtOAc (3 ⁇ 100 mL).
- Step 2 4-(3-Thienylthio)aniline: 4-(3-Thienylthio)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B1.
- Step 1 5-Bromo-2-methoxypyridine: A mixture of 2,5-dibromopyridine (5.5 g, 23.2 mmol) and NaOMe (3.76 g, 69.6 mmol) in MeOH (60 mL) was heated at 70° C. in a sealed reaction vessel for 42 h, then allowed to cool to room temp. The reaction mixture was treated with water (50 mL) and extracted with EtOAc (2 ⁇ 100 mL). The combined organic layers were dried (Na 2 SO 4 ) and concentrated under reduced pressure to give a pale yellow, volatile oil (4.1 g, 95% yield): TLC (10% EtOAc/90% hexane) R ⁇ 0.57.
- Step 2 5-Hydroxy-2-methoxypyridine: To a stirred solution of 5-bromo-2-methoxypyridine (8.9 g, 47.9 mmol) in THF (175 mL) at ⁇ 78° C. was added an n-butyllithium solution (2.5 M in hexane; 28.7 mL, 71.8 mmol) dropwise and the resulting mixture was allowed to stir at ⁇ 78° C. for 45 min. Trimethyl borate (7.06 mL 62.2 mmol) was added via syringe and the resulting mixture was stirred for an additional 2 h. The bright orange reaction mixture was warmed to 0° C.
- Step 3 4-(5-(2-Methoxy)pyridyl)oxy-1-nitrobenzene: To a stirred slurry of NaH (97%, 1.0 g, 42 mmol) in anh DMF (100 mL) was added a solution of 5-hydroxy-2-methoxypyridine (3.5 g, 28 mmol) in DMF (100 mL). The resulting mixture was allowed to stir at room temp. for 1 h, 4-fluoronitrobenzene (3 mL, 28 mmol) was added via syringe. The reaction mixture was heated to 95° C. overnight, then treated with water (25 mL) and extracted with EtOAc (2 ⁇ 75 mL). The organic layer was dried (MgSO 4 ) and concentrated under reduced pressure. The residual brown oil was crystallized EtOAc/hexane) to afford yellow crystals (5.23 g, 75%).
- Step 4 4-(5-(2-Methoxy)pyridyl)oxyaniline: 4-(5-(2-Methoxy)pyridyl)oxy-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, Step 2.
- Step 1 Methyl(4-nitrophenyl)-4-pyridylamine: To a suspension of N-methyl-4-nitroaniline (2.0 g, 13.2 mmol) and K 2 CO 3 (7.2 g, 52.2 Sol) in DMPU (30 mL) was added 4-chloropyridine hydrochloride (2.36 g, 15.77 mmol). The reaction mixture was heated at 90° C. for 20 h, then cooled to room temperature. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (100 mL). The organic layer was washed with water (100 mL), dried (Na 2 SO 4 ) and concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, gradient from 80% EtOAc/20% hexanes to 100% EtOAc) to afford methyl(4-nitrophenyl)-4-pyridylamine (0.42 g)
- Step 2 Methyl(4-aminophenyl)-4-pyridylamine: Methyl(4-nitrophenyl)-4-pyridylamine was reduced in a manner analogous to that described in Method B1.
- Step 1 4-(4-Butoxyphenyl)thio-1-nitrobenzene: To a solution of 4-(4-nitrophenyl-thio)phenol (1.50 g, 6.07 mmol) in anh DMF (75 ml) at 0° C. was added NaH (60% in mineral oil, 0.267 g, 6.67 mmol). The brown suspension was stirred at 0° C. until gas evolution stopped (15 min), then a solution of iodobutane (1.12 g, 0.690 ml, 6.07 mmol) in anh DMF (20 mL) was added dropwise over 15 min at 0° C. The reaction was stirred at room temp.
- Step 2 4-(4-Butoxyphenyl)thioaniline; 4-(4-Butoxyphenyl)thio-1-nitrobenzene was reduced to the aniline in a manner analagous to that used in the preparation of 3-(trifluoromethyl)-4-(4-pyridinylthio)aniline (Method B3b, Step 2): TLC (33% EtOAc/77% hexane) R ⁇ 0.38.
- Step 1 3-(4-Nitrobenzyl)pyridine: A solution of 3-benzylpyridine (4.0 g, 23.6 mmol) and 70% nitric acid (30 mL) was heated overnight at 50° C. The resulting mixture was allowed to cool to room temp. then poured into ice water (350 mL). The aqueous mixture then made basic with a 1N NaOH solution, then extracted with Et 2 O (4 ⁇ 100 mL). The combined extracts were sequentially washed with water (3 ⁇ 100 mL) and a saturated NaCl solution (2 ⁇ 100 mL), dried Na 2 SO 4 ), and concentrated in vacuo.
- Step 1 4-(1-Imidazolylmethyl)-1-nitrobenzene: To a solution of imidazole (0.5 g, 7.3 mmol) and 4-nitrobenzyl bromide (1.6 g, 7.3 mmol) in anh acetonitrile (30 mL) was added K 2 CO 3 (1.0 g, 7.3 mmol). The resulting mixture was stirred at room temp. for 18 h and then poured into water (200 mL) and the resulting aqueous solution was extracted with EtOAc (3 ⁇ 50 mL). The combined organic layers were sequentially washed with water (3 ⁇ 50 mL) and a saturated NaCl solution (2 ⁇ 50 mL), dried (MgSO 4 ), and concentrated in vacuo. The residual oil was purified by MPLC (silica gel; 25% EtOAc/75% hexane) to afford the desired product (1.0 g, 91%): EI-MS m/z 203 (M + ).
- Step 2 4-(1-Imidazolylmethyl)aniline: 4-(Imidazolylmethyl)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B2.
- Step 1 4-(1-Hydroxy-1-(4-pyridyl)methyl-1-nitrobenzene: To a stirred solution of 3-(4-nitrobenzyl)pyridine (6.0 g, 28 mmol) in CH 2 Cl 2 (90 mL) was added m-CPBA (5.80 g, 33.6 mmol) at 10° C., and the mixture was stirred at room temp. overnight. The reaction mixture was successively washed with a 10% NaHSO 3 solution (50 mL), a saturated K 2 CO 3 solution (50 mL) and a saturated NaCl solution (50 mL), dried (MgSO 4 ) and concentrated under reduced pressure.
- m-CPBA 5.80 g, 33.6 mmol
- Step 2 4-(1-Hydroxy-1-(4-pyridyl)methylaniline: 4-(1-Hydroxy-1-(4-pyridyl)-methyl-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, Step 2.
- the opaque brown solution was diluted with H2O (700 mL) followed by a 10% NaOH solution (250 mL).
- the aqueous mixture was extracted with EtOAc (3 ⁇ 500 mL) and the organic layers were washed separately with a saturated NaCl solution (3 ⁇ 150 mL.
- the combined organics were dried (MgSO 4 ) and filtered through a pad of silica gel eluting with EtOAc.
- the solvent was removed in vacuo and the brown residue was purified by silica gel chromatography (gradient from 50% EtOAc/50% hexane to 80% EtOAc/20% hexane). The resulting yellow oil crystallized at 0° C.
- Step 1 4-(4-Methylsulfonylphenoxy)-1-nitrobenzene: To a solution of 4-(4-methylthiophenoxy)-1-ntirobenzene (2 g, 7.66 mmol) in CH 2 Cl 2 (75 mL) at 0° C. was slowly added MCPBA (57-86%, 4 g), and the reaction mixture was stirred at room temperature for 5 h. The reaction mixture was treated with a 1 N NaOH solution (25 mL).
- Step 2 4-(4-Methylsulfonylphenoxy)-1-aniline: 4-(4-Methylsulfonylphenoxy)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, step 2.
- Step 1 4-(3-Methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene: To a solution of -(3-carboxy-4-hydroxyphenoxy)-1-nitrobenzene (prepared in a manner analogous to that described in Method B3a, step 1, 12 mmol) in acetone (50 mL) was added K 2 CO 3 (5 g) and dimethyl sulfate (3.5 mL). The resulting mixture was heated at the reflux temperature overnight, then cooled to room temperature and filtered through a pad of Celite®.
- Step 2 4-(3-Carboxy-4-methoxyphenoxy)-1-nitrobenzene: A mixture of 4-(3-methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene (1.2 g), KOH (0.33 g), and water (5 mL) in MeOH (45 mL) was stirred at room temperature overnight and then heated at the reflux temperature for 4 h. The resulting mixture was cooled to room temperature and concentrated under reduced pressure. The residue was dissolved in water (50 mL), and the aqueous mixture was made acidic with a 1N HCl solution. The resulting mixture was extracted with EtOAc (50 mL). The organic layer was dried (MgSO 4 ) and concentrated under reduced pressure to give 4-(3-carboxy-4-methoxyphenoxy)-1-nitrobenzene (1.04 g).
- N-(5-tert-Butyl-2-(3-tetrahydrofuranyloxy)phenyl)-N′-(4 methylphenyl)urea To a solution of 5-tert-butyl-2-(3-tetrahydrofuranyloxy)aniline (0.078 g, 0.33 mmol) in toluene (2.0 mL) was added p-tolyl isocyanate (0.048 g, 0.36 mmol) and the resulting mixture was allowed to stir at room temp. for 8 h to produce a precipitate.
- N-(2-Methoxy-5-(trifluoromethanesulfonyl)phenyl)-N′(4-methylphenyl)urea p-Tolyl isocyanate (0.19 mL, 1.55 mmol) was added to a solution of 2-methoxy-5-(trifluoromethanesulfonyl)aniline (0.330 g, 1.29 mmol) in EtOAc (5 mL), and the reaction mixture was stirred at room temp. for 18 h. The resulting precipitate was collected by filtration and washed with Et 2 O to give a white solid (0.28 g).
- N-(2-Methoxy-5-(difluoromethanesulfonyl)phenyl)-N′-(4-methylphenyl)urea p-Tolyl isocyanate (0.058 mL, 0.46 mmol) was added to a solution of 2-methoxy-5-(difluoromethanesulfonyl)aniline (0.100 g, 0.42 mmol) in EtOAc (0.5 mL) and the resulting mixture was stirred at room temp. for 3 d.
- N-(2,4-Dimethoxy-5-(trifluoromethyl)phenyl)-N′-(4-methylphenyl)urea p-Tolyl isocyanate (0.16 mL, 1.24 mmol) was added to a solution of 2,4-dimethoxy-5-(trifluoromethyl)aniline (0.25 g, 1.13 mmol) in EtOAc (3 mL) and the resulting mixture was stirred at room temp. for 18 h. A resulting precipitate was washed with Et 2 O to give the title compound as a white solid (0.36 g): 1 H-NMR (CDCl 3 ) ⁇ 2.21 (s, 3H).
- N-(3-Methoxy-2-naphthyl)-N′-(1-naphthyl)urea To a solution of 2-amino-3-methoxynaphthalene (0.253 g, 1.50 mmol) in CH 2 Cl 2 (3 mL) at room temp. was added a solution of 1-naphthyl isocyanate (0.247 g, 1.50 mmol) in CH 2 Cl 2 (2 mL) and the resulting mixture was allowed to stir overnight.
- N-(5-tert-Butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)phenyl)-N′-(4-methylphenyl)urea A mixture of 5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)aniline (Method A10, 0.232 g, 0.75 mmol) and p-tolyl isocyanate (0.099 mL, 0.79 mmol) in EtOAc (1 mL) was stirred at room temp. for 3 d to produce a solid, which was separated.
- N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(3-(4-pyridinylthio phenyl urea To a solution of pyridine (0.61 mL, 7.5 mmol, 3.0 equiv) and phosgene (20% in toluene; 2.65 mL, 5.0 mmol, 2.0 equiv) in CH 2 Cl 2 (20 mL) was added 2-methoxy-5-(trifluoromethyl)aniline (0.48 g, 2.5 mmol) at 0° C. The resulting mixture was allowed warm to room temp. stirred for 3 h, then treated with anh. toluene (100 mL) and concentrated under reduced pressure.
- N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(4-pyridinylthio)phenyl)urea To a solution of pyridine (0.61 mL, 7.5 mmol, 3.0 equiv) and phosgene (20% in toluene; 2.65 mL, 5.0 mmol, 2.0 equiv) in CH 2 Cl 2 (20 mL) was added 4-(4-pyridinylthio)aniline (0.506 g, 2.5 mmol) at 0° C. After stirring for 3 h at room temp., the mixture was treated with anh. toluene (100 mL) then concentrated under reduced pressure.
- Step 1 5-(Difluoromethanesulfonyl)-2-methoxyphenyl isocyanate: To a solution of phosgene (1.95 M in toluene; 3.0 mL, 5.9 mmol) in CH 2 Cl 2 (40 mL) at 0° C. was added a solution of 5-(difluoromethanesulfonyl)-2-methoxyaniline (0.70 g, 2.95 mmol) and pyridine (0.44 mL, 8.85 mmol) in CH 2 Cl 2 (10 mL) dropwise. After being stirred at 0° C.
- Step 2 N-(2-Methoxy-5-(difluoromethanesulfonyl)phenyl)-N′-(2-fluoro-4-methylphenyl)urea: 2-Fluoro-4-methylaniline (0.022 mL, 0.19 mmol) was added to a solution of 5-(difluoromethanesulfonyl)-2-methoxyphenyl isocyanate (0.046 g, 0.17 mmol) in EtOAc (1 mL). The reaction mixture was stirred at room temp. for 3 d.
- Step 2 N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-fluorophenyl)urea: 4-Fluoroaniline (0.24 mL, 2.53 mmol) was added to a solution of 2-methoxy-5-(trifluoromethyl)phenyl isocyanate (0.50 g, 2.30 mmol) in EtOAc (6 mL) and the reaction mixture was stirred at room temp. for 3 d. The resulting precipitate was washed with Et 2 O to give the title compound as a white solid (0.60 g): NMR: 3.94 (s, 3H).
- N-(3-Methoxy-2-naphthyl)-N′-(4-methylphenyl)urea To a solution of 3-methoxy-2-naphthoic acid (Method A6, Step 2; 0.762 g, 3.80 mmol) and Et 3 N (0.588 mL, 4.2 mmol) in anh toluene (20 mL) at room temp. was added a solution of diphenylphosphoryl azide (1.16 g, 4.2 mmol) in toluene (5 mL). The resulting mixture was heated to 80° C. for 2 h, cooled to room temp., and p-toluidine (0.455 g, 4.1 mmol) was added.
- N-(5-Chloro-2-hydroxy-4-nitrophenyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea A solution of 4-(4-pyridinylmethyl)aniline (0.300 g, 1.63 mmol) and N,N′-carbonyldiimidazole (0.268 g, 1.65 mmol) in CH 2 Cl 2 (10 mL) was stirred at room temp. for 1 h at which time TLC analysis indicated no starting aniline. The reaction mixture was then treated with 2-amino-4-chloro-5-nitrophenol (0.318 g, 1.65 mmol) and stirred at 40-45° C. for 48 h. The resulting mixture was cooled to room temp.
- the residue was purified by column chromatography (gradient form 100% CH 2 Cl 2 to 5% MeOH/95% CH 2 Cl 2 ) to give bis(4-chloro-3-(trifluoromethyl)phenyl)urea followed by N-(3-tert-butyl-5-isoxazolyl)-N′-(4-chloro-3-(trifluoromethyl)phenyl)urea.
- the residue from the symmetrical urea fractions was triturated (Et 2 O/hexane) to give the urea as a white solid (0.110 g): TLC (3% MeOH/97% CH 2 Cl 2 ) R ⁇ 0.55; FAB-MS m/z 417 ((M+H) + ).
- Step 1 N-(2-Hydroxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea: p-Tolyl isocyanate (0.066 mL, 0.52 mmol) was added to a solution of 2-hydroxy-5-(trifluoromethylthio)aniline (0.100 g, 0.48 mmol) in EtOAc (2 mL) and the reaction mixture was stirred at room temp. for 2 d. The resulting precipitate was washed with EtOAc to provide the title compound (0.13 g): 1 H-NMR (CDCl 3 ) ⁇ 2.24 (s, 3H).
- N-(2-Methoxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea A solution of N-(2-hydroxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea (0.125 g, 0.36 mmol), iodomethane (0.045 mL, 0.73 mmol), and K 2 CO (100 mg, 0.73 mmol) in acetone (2 mL) was heated at the reflux temp. for 6 h, then was cooled to room temp. and concentrated under reduced pressure.
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(2-amino-4-methylphenyl)urea A solution of N-(5-tert-butyl-2-methoxyphenyl)-N′-(2-nitro-4-methylphenyl)urea (prepared in a manner analogous to Method B1a; 4.0 g, 11.2 mmol) in EtOH (100 mL) was added to a slur of 10% Pd/C (0.40 g) in EtOH (10 mL), and the resulting mixture was stirred under an atmosphere of H 2 (balloon) at room temp. for 18 h.
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(1-naphthyl)thiourea To a solution of 5-tert-butyl-2-methoxyaniline (0.372 g, 2.07 mmol) in toluene (5 mL) was added 1-naphthyl thioisocyanate (0.384 g, 2.07 mmol) and the resulting mixture was allowed to stir at room temp. for 8 h to produce a precipitate.
- N-(5-tert-Butyl-2-(2-hydroxyethoxy)phenyl)-N′-(4-methylphenyl)urea A solution of N-(5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)phenyl)-N′-(4-methylphenyl)urea (Method B1f 0.237 g, 0.54 mmol) and TFA (0.21 mL, 2.7 mmol) in CH 2 Cl 2 (2 mL) was stirred at room temp for 18 h, then was washed with a saturated NaHCO 3 solution (2 mL). The organic layer was dried by passing through 1PS filter paper (Whatman®) and concentrated under reduced pressure.
- 1PS filter paper Whatman®
- the in vitro inhibitory properties of compounds were determined using a p38 kinase inhibition assay.
- P38 activity was detected using an in vitro kinase assay run in 96-well microtiter plates.
- Recombinant human p38 0.5 ⁇ g/mL was mixed with substrate (myelin basic protein, 5 ⁇ g/mL) in kinase buffer (25 mM Hepes, 20 mM MgCl 2 and 150 mM NaCl) and compound.
- substrate myelin basic protein, 5 ⁇ g/mL
- kinase buffer 25 mM Hepes, 20 mM MgCl 2 and 150 mM NaCl
- One ⁇ Ci/well of 33 P-labeled ATP (10 ⁇ M) was added to a final volume of 100 ⁇ L.
- the reaction was run at 32° C. for 30 min. and stopped with a 1M HCl solution.
- the in vivo inhibitory properties of selected compounds were determined using a murine LPS induced TNF ⁇ production in vivo model.
- BALB/c mice Charles River Breeding Laboratories; Springfield, N.Y.
- endotoxin E. coli lipopolysaccharide (LPS) 100 ⁇ g
- LPS lipopolysaccharide
- animals were euthanized by carbon dioxide asphyxiation and plasma was obtained from individual animals by cardiac puncture into heparinized tubes.
- the samples were clarified by centrifugation at 12,500 ⁇ g for 5 min at 4° C.
- the supernatants were decanted to new tubes, which were stored as needed at ⁇ 20° C.
- TNF ⁇ levels in sera were measured using a commercial murine TNF ELISA kit (Genzyme).
Abstract
This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases and proteolytic enzyme mediated diseases, and pharmaceutical compositions for use in such therapy.
Description
- This application is a continuation of U.S. Ser. No. 10/060,396, filed Feb. 1, 2002, which is a continuation of U.S. Ser. No. 09/458,015, filed Dec. 10, 1999 (now abandoned), which is a Continuation in Part of U.S. Ser. No. 09/285,522, filed Dec. 22, 1998 (now abandoned), which claimed priority of Provisional Application 60/126,439, filed Dec. 22, 1997, all of which are incorporated by reference herein.
- This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases and proteolytic enzyme mediated diseases, and pharmaceutical compositions for use in such therapy.
- Two classes of effector molecules which are critical for the progression of rheumatoid arthritis are pro-inflammatory cytokines and tissue degrading proteases. Recently, a family of kinases was described which is instrumental in controlling the transcription and translation of the structural genes coding for these effector molecules.
- The mitogen-activated protein (MAP) kinase family is made up of a series of structurally related proline-directed serine/threonine kinases which are activated either by growth factors (such as EGF) and phorbol esters (ERK), or by IL-1, TNFα or stress (p38, JNK). The MAP kinases are responsible for the activation of a wide variety of transcription factors and proteins involved in transcriptional control of cytokine production. A pair of novel protein kinases involved in the regulation of cytokine synthesis was recently described by a group from SmithKline Beecham (Lee et al. Nature 1994, 372, 739). These enzymes were isolated based on their affinity to bond to a class of compounds, named CSAIDSs (cytokine suppressive anti-inflammatory drugs) by SKB. The CSAIDs, bicyclic pyridinyl imidazoles, have been shown to have cytokine inhibitory activity both in vitro and in vivo. The isolated enzymes, CSBP-1 and -2 (CSAID binding protein 1 and 2) have been cloned and expressed. A murine homologue for CSBP-2, p38, has also been reported (Han et al. Science 1994, 265, 808).
- Early studies suggested that CSAIDs function by interfering with m-RNA translational events during cytokine biosynthesis. Inhibition of p38 has been shown to inhibit both cytokine production (eg., TNFα, IL-1, IL-6, IL-8) and proteolytic enzyme production (eg., MMP-1, MMP-3) in vitro and/or in vivo.
- Clinical studies have linked TNFα production and/or signaling to a number of diseases including rheumatoid arthritis (Maini. J. Royal Coil. Physicians London 1996, 30, 344). In addition, excessive levels of TNFα have been implicated in a wide variety of inflammatory and/or immunomodulatory diseases, including acute rheumatic fever (Yegin et al. Lancet 1997, 349, 170), bone resorption (Pacifici et al. J. Clin. Endocrinol. Metabol. 1997, 82, 29), postmenopausal osteoperosis (Pacifici et al. J. Bone Mineral Res. 1996, 11, 1043), sepsis (Blackwell et al. Br. J. Anaesth. 1996, 77, 110), gram negative sepsis (Debets et al. Prog. Clin. Biol. Res. 1989, 308, 463), septic shock (Tracey et al. Nature 1987, 330, 662; Girardin et al. New England J. Med. 1988, 319, 397), endotoxic shock (Beutler et al. Science 1985, 229, 869; Ashkenasi et al. Proc. Nat'l. Acad. Sci. USA 1991, 88, 10535), toxic shock syndrome, (Saha et al. J. Immunol. 1996, 157, 3869; Lina et al. FEMS Immunol. Med. Microbiol. 1996, 13, 81), systemic inflammatory response syndrome (Anon. Crit. Care Med. 1992, 20, 864), inflammatory bowel diseases (Stokkers et al. J. Inflamm. 1995-6, 47, 97) including Crohn's disease (van Deventer et al. Aliment. Pharmacol. Therapeu. 1996, 10 (Suppl. 2), 107; van Dullemen et al. Gastroenterology 1995, 109, 129) and ulcerative colitis (Masuda et al. J. Clin. Lab. Immunol. 1995, 46, 111), Jarisch-Herxheimer reactions (Fekade et al. New England J. Med. 1996, 335, 311), asthma (Amrani et al. Rev. Malad. Respir. 1996, 13, 539), adult respiratory distress syndrome (Roten et al. Am. Rev. Respir. Dis. 1991, 143, 590; Suter et al. Am. Rev. Respir. Dis. 1992, 145, 1016), acute pulmonary fibrotic diseases (Pan et al. Pathol. Int. 1996, 46, 91), pulmonary sarcoidosis (Ishioka et al. Sarcoidosis Vasculitis Diffuse Lung Dis. 1996, 13, 139), allergic respiratory diseases (Casale et al. Am. J. Respir. Cell Mol. Biol. 1996, 15, 35), silicosis (Gossart et al. J. Immunol. 1996, 156, 1540; Vanhee et al. Eur. Respir. J. 1995, 8, 834), coal worker's pneumoconiosis (Borm et al. Am. Rev. Respir. Dis. 1988, 138, 1589), alveolar injury (Horinouchi et al. Am. J. Respir. Cell Mol. Biol. 1996, 14, 1044), hepatic failure (Gantner et al. J. Pharmacol. Exp. Therap. 1997, 280, 53), liver disease during acute inflammation (Kim et al. J. Biol. Chem. 1997, 272, 1402), severe alcoholic hepatitis (Bird et al. Ann. Intern. Med. 1990, 112, 917), malaria (Grau et al. Immunol. Rev. 1989, 112, 49; Taverne et al. Parasitol. Today 1996, 12, 290) including Plasmodium falciparum malaria (Perlmann et al. Infect. Immunit. 1997, 65, 116) and cerebral malaria (Rudin et al. Am. J. Pathol. 1997, 150, 257), non-insulin-dependent diabetes mellitus (NIDDM; Stephens et al. J. Biol. Chem. 1997, 272, 971; Ofei et al. Diabetes 1996, 45, 881), congestive heart failure (Doyama et al. Int. J. Cardiol. 1996, 54, 217; McMurray et al. Br. Heart J. 1991, 66, 356), damage following heart disease (Malkiel et al. Mol. Med. Today 1996, 2, 336), atherosclerosis (Parums et al. J. Pathol. 1996, 179, A46), Alzheimer's disease (Fagarasan et al. Brain Res. 1996, 723, 231; Aisen et al. Gerontology 1997, 43, 143), acute encephalitis (Ichiyama et al. J. Neurol. 1996, 243, 457), brain injury (Cannon et al. Crit. Care Med. 1992, 20, 1414; Hansbrough et al. Surg. Clin. N. Am. 1987, 67, 69; Marano et al. Surg. Gynecol. Obstetr. 1990, 170, 32), multiple sclerosis (M. S.; Coyle. Adv. Neuroimmunol. 1996, 6, 143; Matusevicius et al. J. Neuroimmunol. 1996, 66, 115) including demyelation and oligiodendrocyte loss in multiple sclerosis (Brosnan et al. Brain Pathol. 1996, 6, 243), advanced cancer (MucWierzgon et al. J. Biol. Regulators Homeostatic Agents 1996, 10, 25), lymphoid malignancies (Levy et al. Crit. Rev. Immunol. 1996, 16, 31), pancreatitis (Exley et al. Gut 1992, 33, 1126) including systemic complications in acute pancreatitis (McKay et al. Br. J. Surg. 1996, 83, 919), impaired wound healing in infection inflammation and cancer (Buck et al. Am. J. Pathol. 1996, 149, 195), myelodysplastic syndromes (Raza et al. Int. J. Hematol. 1996, 63, 265), systemic lupus erythematosus (Maury et al. Arthritis Rheum. 1989, 32, 146), biliary cirrhosis (Miller et al. Am. J. Gasteroenterolog. 1992, 87, 465), bowel necrosis (Sun et al. J. Clin. Invest. 1988, 81, 1328), psoriasis (Christophers. Austr. J. Dermatol. 1996, 37, 54), radiation injury (Redlich et al. J. Immunol. 1996, 157, 1705), and toxicity following administration of monoclonal antibodies such as OKT3 (Brod et al. Neurology 1996, 46, 1633). TNFα levels have also been related to host-versus-graft reactions (Piguet et al. Immunol. Ser. 1992, 56, 409) including ischemia reperfusion injury (Colletti et al. J. Clin. Invest. 1989, 85, 1333) and allograft rejections including those of the kidney (Maury et al. J. Exp. Med. 1987, 166, 1132), liver (Imagawa et al. Transplantation 1990, 50, 219), heart (Bolling et al. Transplantation 1992, 53, 283), and skin (Stevens et al. Transplant. Proc. 1990, 22, 1924), lung allograft rejection (Grossman et al. Immunol. Allergy Clin. N. Am. 1989, 9, 153) including chronic lung allograft rejection (obliterative bronchitis; LoCicero et al. J. Thorac. Cardiovasc. Surg. 1990, 99, 1059), as well as complications due to total hip replacement (Cirino et al. Life Sci. 1996, 59, 86). TNFα has also been linked to infectious diseases (review: Beutler et al. Crit. Care Med. 1993, 21, 5423; Degre. Biotherapy 1996, 8, 219) including tuberculosis (Rook et al. Med. Malad. Infect. 1996, 26, 904), Helicobacter pylori infection during peptic ulcer disease (Beales et al. Gastroenterology 1997, 112, 136), Chaga's disease resulting from Trypanosoma cruzi infection (Chandrasekar et al. Biochem. Biophys. Res. Commun. 1996, 223, 365), effects of Shiga-like toxin resulting from E. coli infection (Harel et al. J. Clin. Invest. 1992, 56, 40), the effects of enterotoxin A resulting from Staphylococcus infection (Fischer et al. J. Immunol. 1990, 144, 4663), meningococcal infection (Waage et al. Lancet 1987, 355; Ossege et al. J. Neurolog. Sci. 1996, 144, 1), and infections from Borrelia burgdorferi (Brandt et al. Infect. Immunol. 1990, 58, 983), Treponema pallidum (Chamberlin et al. Infect. Immunol. 1989, 57, 2872), cytomegalovirus (CMV; Geist et al. Am. J. Respir. Cell Mol. Biol. 1997, 16, 31), influenza virus (Beutler et al. Clin. Res. 1986, 34, 491a), Sendai virus (Goldfield et al. Proc. Nat'l. Acad. Sci. USA 1989, 87, 1490), Theiler's encephalomyelitis virus (Sierra et al. Immunology 1993, 78, 399), and the human immunodeficiency virus (HIV; Poli. Proc. Nat'l. Acad. Sci. USA 1990, 87, 782; Vyakaram et al. AIDS 1990, 4, 21; Badley et al. J. Exp. Med. 1997, 185, 55).
- Because inhibition of p38 leads to inhibition of TNFα production, p38 inhibitors will be useful in treatment of the above listed diseases.
- A number of diseases are thought to be mediated by excess or undesired matrix-destroying metalloprotease (MM) activity or by an imbalance in the ratio of the MMPs to the tissue inhibitors of metalloproteinases (TIMPs). These include osteoarthritis (Woessner et al. J. Biol. Chem. 1984, 259, 3633), rheumatoid arthritis (Mullins et al. Biochim. Biophys. Acta 1983, 695, 117; Woolley et al. Arthritis Rheum. 1977, 20, 1231; Gravallese et al. Arthritis Rheum. 1991, 34, 1076), septic arthritis (Williams et al. Arthritis Rheum. 1990, 33, 533), tumor metastasis (Reich et al. Cancer Res. 1988, 48, 3307; Matrisian et al. Proc. Nat'l. Acad. Sci., USA 1986, 83, 9413), periodontal diseases (Overall et al. J. Periodontal Res. 1987, 22, 81), corneal ulceration (Burns et al. Invest. Opthalmol. Vis. Sci. 1989, 30, 1569), proteinuria (Baricos et al. Biochem. J. 1988, 254, 609), coronary thrombosis from atherosclerotic plaque rupture (Henney et al. Proc. Nat'l. Acad. Sci., USA 1991, 88, 8154), aneurysmal aortic disease (Vine et al. Clin. Sci. 1991, 81, 233), birth control (Woessner et al. Steroids 1989, 54, 491), dystrophobic epidermolysis bullosa (Kronberger et al. J. Invest. Dermatol. 1982, 79, 208), degenerative cartilage loss following traumatic joint injury, osteopenias mediated by MMP activity, tempero mandibular joint disease, and demyelating diseases of the nervous system (Chantry et al. J. Neurochem. 1988, 50, 688).
- Because inhibition of p38 leads to inhibition of MMP production, p38 inhibitors will be useful in treatment of the above listed diseases.
- Inhibitors of p38 are active in animal models of TNFα production, including a murine lipopolysaccharide (LPS) model of TNFα production. Inhibitors of p38 are active in a number of standard animal models of inflammatory diseases, including carrageenan-induced edema in the rat paw, arachadonic acid-induced edema in the rat paw, arachadonic acid-induced peritonitis in the mouse, fetal rat long bone resorption, murine type II collagen-induced arthritis, and Fruend's adjuvant-induced arthritis in the rat. Thus, inhibitors of p38 will be useful in treating diseases mediated by one or more of the above-mentioned cytokines and/or proteolytic enzymes.
- The need for new therapies is especially important in the case of arthritic diseases. The primary disabling effect of osteoarthritis, rheumatoid arthritis and septic arthritis is the progressive loss of articular cartilage and thereby normal joint function. No marketed pharmaceutical agent is able to prevent or slow this cartilage loss, although nonsteroidal antiinflammatory drugs (NSAIDs) have been given to control pain and swelling. The end result of these diseases is total loss of joint function which is only treatable by joint replacement surgery. P38 inhibitors will halt or reverse the progression of cartilage loss and obviate or delay surgical intervention.
- Several patents have appeared claiming polyarylimidazoles and/or compounds containing polyarylimidazoles as inhibitors of p38 (for example, Lee et al. WO 95/07922; Adams et al. WO 95/02591; Adams et al. WO 95/13067; Adams et al. WO 95/31451). It has been reported that arylimidazoles complex to the ferric form of cytochrome P450cam (Harris et al. Mol. Eng. 1995, 5, 143, and references therein), causing concern that these compounds may display structure-related toxicity (Howard-Martin et al. Toxicol. Pathol. 1987, 15, 369). Therefore, there remains a need for improved p38 inhibitors.
- This invention provides compounds, generally described as aryl ureas, including both aryl and heteroaryl analogues, which inhibit p38 mediated events and thus inhibit the production of cytokines (such as TNFα, IL-1 and IL-8) and proteolytic enzymes (such as MMP-1 and MMP-3). The invention also provides a method of treating a cytokine mediated disease state in humans or mammals, wherein the cytokine is one whose production is affected by p38. Examples of such cytokines include, but are not limited to TNFα, IL-1 and IL-8. The invention also provides a method of treating a protease mediated disease state in humans or mammals, wherein the protease is one whose production is affected by p38. Examples of such proteases include, but are not limited to collagenase (MMP-1) and stromelysin (MMP-3).
- Accordingly, these compounds are useful therapeutic agents for such acute and chronic inflammatory and/or immunomodulatory diseases as rheumatoid arthritis, osteoarthritis, septic arthritis, rheumatic fever, bone resorption, postmenopausal osteoperosis, sepsis, grain negative sepsis, septic shock, endotoxic shock, toxic shock syndrome, systemic inflammatory response syndrome, inflammatory bowel diseases including Crohn's disease and ulcerative colitis, Jarisch-Herxheimer reactions, asthma, adult respiratory distress syndrome, acute pulmonary fibrotic diseases, pulmonary sarcoidosis, allergic respiratory diseases, silicosis, coal worker's pneumoconiosis, alveolar injury, hepatic failure, liver disease during acute inflammation, severe alcoholic hepatitis, malaria including Plasmodium falciparum malaria and cerebral malaria, non-insulin-dependent diabetes mellitus (NIDDM), congestive heart failure, damage following heart disease, atherosclerosis, Alzheimer's disease, acute encephalitis, brain injury, multiple sclerosis including demyelation and oligiodendrocyte loss in multiple sclerosis, advanced cancer, lymphoid malignancies, tumor metastasis, pancreatitis, including systemic complications in acute pancreatitis, impaired wound healing in infection, inflammation and cancer, periodontal diseases, corneal ulceration, proteinuria, myelodysplastic syndromes, systemic lupus erythematosus, biliary cirrhosis, bowel necrosis, psoriasis, radiation injury, toxicity following administration of monoclonal antibodies such as OKT3, host-versus-graft reactions including ischemia reperfusion injury and allograft rejections including kidney, liver, heart, and skin allograft rejections, lung allogaft rejection including chronic lung allograft rejection (obliterative bronchitis) as well as complications due to total hip replacement, and infectious diseases including tuberculosis, Helicobacter pylori infection during peptic ulcer disease, Chaga's disease resulting from Trypanosoma cruzi infection, effects of Shiga-like toxin resulting from E. coli infection, effects of enterotoxin A resulting from Staphylococcus infection, meningococcal infection, and infections from Borrelia burgdorferi, Treponema pallidum, cytomegalovirus, influenza virus, Theiler's encephalomyelitis virus, and the human immunodeficiency virus (HIV).
- The present invention, therefore, provides compounds generally described as aryl ureas, including both aryl and heteroaryl analogues, which inhibit the p38 pathway. The invention also provides a method for treatment of p38-mediated disease states in humans or mammals, e.g., disease states mediated by one or more cytokines or proteolytic enzymes produced and/or activated by a p38 mediated process. Thus, the invention is directed to compounds and methods for the treatment of diseases mediated by p38 kinase comprising administering a compound of Formula I
- wherein
-
- A is
- B is a substituted or unsubstituted, up to tricyclic aryl or heteroaryl moiety of up to 30 carbon atoms with at least one 6-member aromatic structure containing 0-4 members of the group consisting of nitrogen, oxygen and sulfur, wherein if B is substituted, it is substituted by one or more substituents selected from the group consisting of halogen, up to per-halo, and Wn, wherein n is 0-3 and each W is independently selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —C(O)—R7, —NO2, —OR7, —SR7, —NR7R7, —NR7C(O)OR7, —NR7C(O)R7, C1-C10 alkyl, C2-10-alkenyl, C1-10-alkoxy, C3-C10 cycloalkyl, C6-C14 aryl, C7-C24 alkaryl, C3-C13 heteroaryl, C4-C23 alkheteroaryl, substituted C1-C10 alkyl, substituted C2-10-alkenyl, substituted C1-10-alkoxy, substituted C3-C10 cycloalkyl, substituted C4-C23 alkheteroaryl and Q-Ar;
-
- wherein if W is a substituted group, it is substituted by one or more substituents independently selected from the group consisting of —CN, —CO2R7, —C(O)R7, —C(O)NR7R7, —OR7, —SR7, —NR7R7, NO2, —NR7C(O)R7, —NR7C(O)OR7 and halogen up to per-halo;
- wherein each R7 is independently selected from H, C1-C10 alkyl, C2-10-alkenyl, C3-C10 cycloalkyl, C6-C14 aryl, C3-C13 hetaryl, C7-C24 alkaryl, C4-C23 alkheteroaryl, up to per-halosubstituted C1-C10 alkyl, up to per-halosubstituted C2-10-alkenyl, up to per-halosubstituted C3-C10 cycloalkyl, up to per-halosubstituted C6-C14 aryl and up to per-halosubstituted C3-C13 hetaryl,
- wherein Q is —O—, —S—, —N(R7)—, —(CH2)—m, —C(O)—, —CH(OH)—, —(CH2)mO—, —NR7C(O)NR7R7′—, —NR7C(O)—, —C(O)NR7, —(CH2)mS—, —(CH2)mN(R7)—, —O(CH2)m—, —CHXa, —CXa 2, —S—(CH2)m— and —N(R7)(CH2)m—,
- m=1-3, and Xa is halogen; and
- Ar is a 5-10 member aromatic structure containing 0-2 members of the group consisting of nitrogen, oxygen and sulfur, which is unsubstituted or substituted by halogen up to per-halo and optionally substituted by Zn1 wherein n1 is 0 to 3 and each Z is independently selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —C(O)—NR7, —C(O)R7, —NO2, —OR7, —SR7, —NR7R7, —NR7C(O)OR7, —NR7C(O)R7, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C14 aryl, C3-C13 hetaryl, C7-C24 alkaryl, C4-C23 alkheteroaryl, substituted C1-C10 alkyl, substituted C3-C10 cycloalkyl, substituted C7-C24 alkaryl and substituted C4-C23 alkheteroaryl; wherein the one or more substituents of Z is selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —OR7, —SR7, —NO2, —NR7R7, —NR7C(O)R7, —NR7C(O)OR7,
- R3′, R4′, R5′ are each independently H, C1-10-alkyl, optionally substituted by halogen, up to perhalo, C1-10 alkoxy, optionally substituted by halogen, up to perhaloalkoxy, halogen; NO2 or NH2;
- R6 is H, C1-10-alkyl, C1-10 alkoxy, —NHCOR1; —NR1COR1; NO2;
-
- one of R4′, R5′ or R6′ can be —X—Y,
- or 2 adjacent R4′-R6′ can together be an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10 alkoxy, C3-10 cycloalkyl, C2-10 alkenyl C1-10 alkanoyl, C6-12 aryl, C5-12 hetaryl or C6-12 aralkyl;
- R1 is C1-10-alkyl optionally substituted by halogen, up to perhalo;
- X is —CH2—, —S—, —N(CH3)—, —NHC(O)—, —CH2—S—, —S—CH2—, —C(O)—, or —O—; and
- X is additionally a single bond where Y is pyridyl;
- Y is phenyl, pyridyl, naphthyl, pyridone, pyrazine, benzodioxane, benzopyridine, pyrimidine or benzothiazole, each optionally substituted by C1-10-alkyl, C1-10-alkoxy, halogen, OH, —SCH3 or NO2 or, where Y is phenyl, by
- or a pharmaceutically acceptable salt thereof.
- Preferably, the compounds of formula I are of formula Ia
- wherein
- R3, R4, R5 and R6 are each independently H, halogen, C1-10-alkyl optionally substituted by halogen, up to perhalo, C1-10-alkoxy, optionally substituted by at least one hydroxy group or by halogen, up to perhalo; C6-12 aryl, optionally substituted by C1-10 alkoxy or halogen, C5-12 hetaryl, optionally substitued by C1-10 alkyl C1-10 alkoxy or halogen; NO2, SO2F or —SO2CHpX3-p; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy,
-
- 2 adjacent R3-R6 can together form an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10-alkoxy, C3-10-cycloalkyl, C2-10-alkenyl, C1-10-alkanoyl, C6-12-aryl, C5-12-hetaryl, C6-12-aralkyl, C6-12-alkaryl, halogen; —NR1; —NO2; —CF3; —COOR1; —NHCOR1; —CN; —CONR1R1; —SO2R2; —SOR2; —SR2; in which R1 is H or C1-10-alkyl and R2 is C1-10-alkyl; optionally substituted by halogen, up to perhalo, with —SO2-optionally incorporated in the aryl or hetaryl ring;
- one of R4, R5 or R6 can be —X—Y,
- R1 is C1-10-alkyl, optionally substituted by halogen, up to perhalo;
- p is 0 or 1;
- X is —CH2, —S—, N(CH3)—, —NHC(O), CH2—S—, —S—CH2—, —C(O)—, or —O—; and
- Y is phenyl, pyridyl, naphthyl, pyridone, pyrazine, benzodixane, benzopyridine pyrimidine or benzothiazole, each optionally substituted by C1-10-alkyl, C1-10-alkoxy, halogen or NO2 or, where Y is phenyl, by
- with the proviso that if R3 and R6 are both H, one of R4 or R5 is not H.
- In formula I, suitable hetaryl groups B include, but are not limited to, 5-12 carbon-atom aromatic rings or ring systems containing 1-3 rings, at least one of which is aromatic, in which one or more, e.g., 1-4 carbon atoms in one or more of the rings can be replaced by oxygen, nitrogen or sulfur atoms. Each ring typically has 3-7 atoms. For example, B can be 2- or 3-furyl, 2- or 3-thienyl, 2- or 4-triazinyl, 1-, 2- or 3-pyrrolyl, 1-, 2-, 4- or 5-imidazolyl, 1-, 3-, 4- or 5-pyrazolyl, 2-, 4- or 5-oxazolyl, 3-, 4- or 5-isoxazolyl, 2-, 4- or 5-thiazolyl, 3-, 4- or 5-isothiazolyl, 2-, 3- or 4-pyridyl, 2-, 4-, 5- or 6-pyrimidinyl, 1,2,3-triazol-1-, -4- or 5-yl, 1,2,4-triazol-1-, -3- or -5-yl, 1- or 5-tetrazolyl, 1,2,3-oxadiazol-4- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl, 1,3,4-thiadiazol-2- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl, 1,3,4-thiadiazol-2- or -5-yl, 1,3,4-thiadiazol-3- or -5-yl, 1,2,3-thiadiazol-4- or -5-yl, 2-, 3-, 4-, 5- or 6-2H-thiopyranyl, 2-, 3- or 4-4H-thiopyranyl, 3- or 4-pyridazinyl, pyrazinyl, 2-, 3-, 4-, 5-, 6- or 7-benzofuryl, 2-, 3-, 4-, 5-, 6- or 7-benzothienyl, 1-, 2-, 3-, 4-, 5-, 6- or 7-indolyl, 1-, 2-, 4- or 5-benzimidazolyl, 1-, 3-, 4-, 5-, 6- or 7-benzopyrazolyl, 2-, 4-, 5-, 6- or 7-benzoxazolyl, 3-, 4-, 5-6- or 7-benzisoxazolyl, 1-, 3-, 4-, 5-, 6- or 7-benzothiazolyl, 2-, 4-, 5-, 6- or 7-benzisothiazolyl, 2-, 4-, 5-, 6- or 7-benz-1,3-oxadiazolyl, 2-, 3-, 4-, 5-, 6-, 7- or 8-quinolinyl, 1-, 3-, 4-, 5-, 6-, 7-, 8-isoquinolinyl, 1-, 2-, 3-, 4- or 9-carbazolyl, 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8- or 9-acridinyl, or 2-, 4-, 5-, 6-, 7- or 8-quinazolinyl, or additionally optionally substituted phenyl, 2- or 3-thienyl, 1,3,4-thiadiazolyl, 3-pyrryl, 3-pyrazolyl, 2-thiazolyl or 5-thiazolyl, etc. For example, B can be 4-methyl-phenyl, 5-methyl-2-thienyl, 4-methyl-2-thienyl, 1-methyl-3-pyrryl, 1-methyl-3-pyrazolyl, 5-methyl-2-thiazolyl or 5-methyl-1,2,4-thiadiazol-2-yl.
- Suitable alkyl groups and alkyl portions of groups, e.g., alkoxy, etc. throughout include methyl, ethyl, propyl, butyl, etc., including all straight-chain and branched isomers such as isopropyl, isobutyl, sec-butyl, tert-butyl, etc.
- Suitable aryl groups include, for example, phenyl and 1- and 2-naphthyl.
- The term “cycloalkyl”, as used herein, refers to cyclic structures with or without alkyl substitutents such that, for example, “C4 cycloakyl” includes methyl substituted cyclopropyl groups as well as cyclobutyl groups. The term “cycloalkyl” also includes saturated heterocyclic groups.
- Suitable halogen groups include F, Cl, Br, and/or I, from one to per-substitution (i.e. all H atoms on a group replaced by a halogen atom) being possible where an alkyl group is substituted by halogen, mixed substitution of halogen atom types also being possible on a given moiety.
- Preferred compounds of formula I include those where R3 is H, halogen or C1-10-alkyl, optionally substituted by halogen, up to perhalo, NO2, —SO2F, —SO2CHF2; or —SO2CF3; R4 is H, C1-10-alkyl, C1-10-alkoxy, halogen or NO2; R5 is H, C1-10-alkyl optionally substituted by halogen, up to perhalo; R6 is H, hydroxy, C1-10-alkoxy, optionally substituted by at least one hydroxy group; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy,
-
- Preferably, R3 is Cl, F, C4-5-branched alkyl, —SO2F or —SO2CF3; and R6 is hydroxy; C1-10-alkoxy optionally substituted by at least one hydroxy group; —COOR1; OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy,
- More preferably, R6 is t-butyl or CF3 and R6 is —OCH3. Preferably, R4′ is C1-10-alkyl or halogen; R5′ is H, C1-10-alkyl, halogen, CF3, halogen, NO2 or NH2; and R6′ is H, C1-10-alkyl, halogen, —NHCOCH3, —N(CH3)COCH3, NO2,
- The invention also relates to compounds per se, of formula II
- wherein
- R3, R4, R5 and R6 are each independently H, halogen, C1-10-alkyl optionally substituted by halogen up to perhalo, C1-10-alkoxy, optionally substituted by at least one hydroxy group or halogen, up to perhalo; NO2, SO2F or —SO2CHnX3-n, C1-10-alkoxy; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; C6-12 aryl, optionally substituted by C1-10-alkyl, C1-10 alkoxy or halogen, C5-12 hetaryl, optionally substitued by C1-10 alkyl, C1-10 alkoxy or halogen; NH2; —N(SO2R1)2; furyloxy;
-
- 2 adjacent R3-R6 can together form an aryl or hetaryl ring with 5-12 atoms, optionally substituted by Cl1-10-alkyl, C1-10-alkoxy, C3-10-cycloakyl, C2-10-alkenyl, C1-10-alkanoyl, C6-12-aryl, C5-12-hetaryl, C6-12-aralkyl, C6-12-alkaryl, halogen; —NR1; —NO2; —CF3; —COOR1; —NHCOR1; —CN; —CONR1R1; —SO2R2; —SOR2; —SR2; in which R1 is H or C1-10-alkyl and R2 is C1-10-alkyl;
- R3′, R4′ and R5′ are each independently H, C1-10-alkyl, optionally substituted by halogen, up to perhalo; NO2 or NH2;
- R6 is H, C1-10-alkyl halogen, —NHCOR1; —NR1COR1; NO2;
- 2 adjacent R4′-R6′ can together be an aryl or hetaryl ring with 5-12 atoms;
- R1 is C1-10-alkyl, optionally substituted by halogen, up to perhalo;
- n is 0 or 1;
with the provisos that- (a) if R3 and R6 are both H, one of R4 or R5 is not H, and
- (b) that R6 is phenyl substituted by alkoxy or halogen, alkoxy substituted by hydroxy, —SO2CF2H, —OR1CONHR1,
- furyloxy or —N(SO2R1)2;
-
- and (c) if R6 is phenyl substituted by alkoxy or halogen, the compounds have a pKa greater than 10, e.g., greater than 12, preferably greater than 15.
Preferred 5-tert-butylphenyl ureas are: - N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-phenyloxphenyl)urea;
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-methoxyphenyloxy)phenyl)urea;
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea;
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-pyridinylthio)phenyl)urea;
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-(4,7-methano-1H-isoindole-1,3(2H)-dionyl)methyl)phenyl)urea;
- N-(5-tert-Butyl-2-phenylphenyl)-N′-(2,3-dichlorophenyl)urea;
- N-(5-tert-Butyl-2-(3-thienyl)phenyl)-N′-(2,3-dichlorophenyl)urea;
- N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
- N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
- N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
- N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
- N-(5-tert-Butyl-2-(3-tetrahydrofuranyloxy)phenyl)-N′-(2,3-dichlorophenyl)urea; and
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(3-pyridinyl)methylphenyl)urea.
Preferred 5-trifluoromethylphenyl ureas are: - N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-2-fluorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-fluoro-3-chlorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-3-chlorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-3-fluorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(2,4-difluorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-phenyloxy-3,5-dichlorophenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(4-pyridinylthio)phenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(4-pyridinyloxy)phenyl)urea;
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(3-(4-pyridinylthio)phenyl)urea; and
- N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(3-(N-methylaminocarbonyl)-phenyloxy)phenyl)-urea.
Preferred 5-sulfonylphenyl ureas are: - N-(5-Fluorosulfonyl)-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methylphenyl)ureaN-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluorophenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-2-fluorophenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-fluorophenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-chlorophenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluoro-3-chlorophenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluoro-3-methylphenyl)urea;
- N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(2,3-dimethylphenyl)urea; and
- N-(5-(Trifluoromethanesulfonyl)-2-methoxphenyl)-N′-(4-methylphenyl)urea.
Preferred 2-naphthyl ureas are: - N-(3-Methoxy-2-naphthyl)-N′-(2-fluorophenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(4-methylphenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(3-fluorophenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(4-methyl-3-fluorophenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(2,3-dimethylphenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(1-naphthyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(4-(4-pyridinylthio)phenyl)urea;
- N-(3-Methoxy-2-naphthyl)-N′-(4-(4-methoxyphenyloxy)phenyl)urea; and
- N-(3-Methoxy-2-naphthyl)-N′-(4-(4-(4,7-methano-1H-isoindole-1,3(2H)-dionyl)methyl)phenyl)urea.
Other preferred ureas are: - N-(2-Hydroxy-4-nitro-5-chlorophenyl)-N′-(phenyl)urea; and
- N-(2-Hydroxy-4-nitro-5-chlorophenyl)-N′-(4-(4-pyridinylmethly)phenyl)urea.
- The present invention is also directed to pharmaceutically acceptable salts of formula I. Suitable pharmaceutically acceptable salts are well known to those skilled in the art and include basic salts of inorganic and organic acids, such as hydroebtoric acid, hydrobromic acid, sulphuric acid, phosphoric acid, methanesulphonic acid, sulphonic acid, acetic acid, trifluoroacetic acid, malic acid, tartaric acid, citric acid, lactic acid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic acid, phenylacetic acid, and mandelic acid. In addition, pharmaceutically acceptable salts include acid salts of inorganic bases, such as salts containing alkaline cations (e.g., Li+ Na+ or K+), alkaline earth cations (e.g., Mg+2, Ca+2 or Ba+2), the ammonium cation, as well as acid salts of organic bases, including aliphatic and aromatic substituted ammonium, and quaternary ammonium cations, such as those arising from protonation or peralkylation of triethylamine, N,N-diethylamine, N,N-dicyclohexylamine, pyridine, N,N-dimethylaminopyridine (DMAP), 1,4-diazabiclo[2.2.2]octane (DABCO), 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU).
- A number of the compounds of Formula I possess asymmetric carbons and can therefore exist in racemic and optically active forms. Methods of separation of enantiomeric and diastereomeric mixtures are well known to one skilled in the art. The present invention encompasses any isolated racemic or optically active form of compounds described in Formula I which possess p38 kinase inhibitory activity.
- The compounds of Formula I may be prepared by use of known chemical reactions and procedures, some from starting materials which are commercially available, Nevertheless, the following general preparative methods are presented to aid one of skill in the art in synthesizing these compounds, with more detailed particular examples being presented in the experimental section describing the working examples.
- Nitroaryls are commonly formed by electrophilic aromatic nitration using HNO3, or an alternative NO2 + source. Nitroaryls may be further elaborated prior to reduction. Thus, nitroaryls substituted with
- potential leaving groups (eg. F, Cl, Br, etc.) may undergo substitution reactions on treatment with nucleophiles, such as thiolate (exemplified in Scheme II) or phenoxide. Nitroaryls may also undergo Ullman-type coupling reactions (Scheme II).
-
- Nitroaryls may also undergo transition metal mediated cross coupling reactions. For example, nitroaryl electrophiles, such as nitroaryl bromides, iodides or triflates, undergo palladium mediated cross coupling reactions with aryl nucleophiles, such as arylboronic acids (Suzuki reactions, exemplified below), aryltins (Stille reactions) or arylzincs (Negishi reaction) to afford the biaryl (5).
-
- Either nitroaryls or anilines may be converted into the corresponding arenesulfonyl chloride (7) on treatment with chlorosulfonic acid. Reaction of the sualfonyl chloride with a fluoride source, such as KF then affords sulfonyl fluoride (8). Reaction of sulfonyl fluoride 8 with trimethylsilyl trifluoromethane in the presence of a fluoride source, such as tris(dimethylamino)sulfonium difluorotrimethylsiliconate (TASF) leads to the corresponding trifluoromethylsulfone (9). Alternatively, sulfonyl chloride 7 may be reduced to the arenethiol (10), for example with zinc amalgum. Reaction of thiol 10 with CHClF2 in the presence of base gives the difluoromethyl mercaptam (11), which may be oxidized to the sulfone (12) with any of a variety of oxidants, including CrO3-acetic anhydride (Sedova et al. Zh. Org. Khim. 1970, 6, 568).
-
- As shown in Scheme IV, non-symmetrical urea formation may involve reaction of an aryl isocyanate (14) with an aryl amine (13). The heteroaryl isocyanate may be synthesized from a heteroaryl amine by treatment with phosgene or a phosgene equivalent, such as trichloromethyl chloroformate (diphosgene), bis(trichloromethyl) carbonate (triphosgene), or NN′-carbonyldiimidazole (CDI). The isocyanate may also be derived from a heterocyclic carboxylic acid derivative, such as an ester, an acid halide or an anhydride by a Curtius-type rearrangement. Thus, reaction of acid derivative 16 with an azide source, followed by rearrangement affords the isocyanate. The corresponding carboxylic acid (17) may also be subjected to Curtius-type rearrangements using diphenylphosphoryl azide (DPPA) or a similar reagent.
-
- Finally, ureas may be further manipulated using methods familiar to those skilled in the art.
- The invention also includes pharmaceutical compositions including a compound of Formula I, and a physiologically acceptable carrier.
- The compounds may be administered orally, topically, parenterally, by inhalation or spray, vaginally, rectally or sublingually in dosage unit formulations. The term ‘administration by injection’ includes intravenous, intramuscular, subcutaneous and parenteral injections, as well as use of Infusion techniques. Dermal administration may include topical application or transdermal administration. One or more compounds may be present in association with one or more non-toxic pharmaceutically acceptable carriers and if desired other active ingredients.
- Compositions intended for oral use may be prepared according to any suitable method known to the art for the manufacture of pharmaceutical compositions. Such compositions may contain one or more agents selected from the group consisting of diluents, sweetening agents, flavoring agents, coloring agents and preserving agents in order to provide palatable preparations. Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients which are suitable for the manufacture of tablets. These excipients may be, for example, inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, corn starch, or alginic acid; and binding agents, for example magnesium stearate, stearic acid or talc. The tablets may be uncoated or they may be coated by known techniques to delay disintegration and adsorption in the gastrointestinal tract and thereby provide a sustained action over a longer period. For example, a time delay material such as glyceryl monostearate or glyceryl distearate may be employed. These compounds may also be prepared in solid, rapidly released form.
- Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil.
- Aqueous suspensions containing the active materials in admixture with excipients suitable for the manufacture of aqueous suspensions may also be used. Such excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxypropyl-methylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents may be a naturally-occurring phosphatide, for example, lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol such as polyoxyethylene sorbitol monooleate, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbitan monooleate. The aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl, p-hydroxybenzoate, one or more coloring agents, one or more flavoring agents, and one or more sweetening agents, such as sucrose or saccharin.
- Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, suspending agent and one or more preservatives. Suitable dispersing or wetting agents and suspending agents are exemplified by those already mentioned above. Additional excipients, for example, sweetening, flavoring and coloring agents, may also be present.
- The compounds may also be in the form of non-aqueous liquid formulations, e.g., oily suspensions which may be formulated by suspending the active ingredients in a vegetable oil, for example arachis oil, olive oil, sesame oil or peanut oil, or in a mineral oil such as liquid paraffin. The oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those set forth above, and flavoring agents may be added to provide palatable oral preparations. These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
- Compounds of the invention may also be administrated transdermally using methods known to those skilled in the art (see, for example: Chien; “Transdermal Controlled Systemic Medications”; Marcel Dekker, Inc.; 1987. Lipp et al. WO94/04157 3 Mar. 1994). For example, a solution or suspension of a compound of Formula I in a suitable volatile solvent optionally containing penetration enhancing agents can be combined with additional additives known to those skilled in the art, such as matrix materials and bacteriocides. After sterilization, the resulting mixture can be formulated following known procedures into dosage forms. In addition, on treatment with emulsifying agents and water, a solution or suspension of a compound of Formula I may be formulated into a lotion or salve.
- Suitable solvents for processing transdermal delivery systems are known to those skilled in the art, and include lower alcohols such as ethanol or isopropyl alcohol, lower ketones such as acetone, lower carboxylic acid esters such as ethyl acetate, polar ethers such as tetrahydrofuran, lower hydrocarbons such as hexane, cyclohexane or benzene, or halogenated hydrocarbons such as dichloromethane, chloroform, trichlorotrifluoroethane, or trichlorofluoroethane. Suitable solvents may also include mixtures of one or more materials selected from lower alcohols, lower ketones, lower carboxylic acid esters, polar ethers, lower hydrocarbons, halogenated hydrocarbons.
- Suitable penetration enhancing materials for transdermal delivery system are known to those skilled in the art, and include, for example, monohydroxy or polyhydroxy alcohols such as ethanol, propylene glycol or benzyl alcohol, saturated or unsaturated C8-C18 fatty alcohols such as lauryl alcohol or cetyl alcohol, saturated or unsaturated C8-C18 fatty acids such as stearic acid, saturated or unsaturated fatty esters with up to 24 carbons such as methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl isobutyl tertbutyl or monoglycerin esters of acetic acid, capronic acid, lauric acid, myristinic acid, stearic acid, or palmitic acid, or diesters of saturated or unsaturated dicarboxylic acids with a total of up to 24 carbons such as diisopropyl adipate, diisobutyl adipate, diisopropyl sebacate, diisopropyl maleate, or diisopropyl fumarate. Additional penetration enhancing materials include phosphatidyl derivatives such as lecithin or cephalin, terpenes, amides, ketones, ureas and their derivatives, and ethers such as dimethyl isosorbid and diethyleneglycol monoethyl ether. Suitable penetration enhancing formulations may also include mixtures of one or more materials selected from monohydroxy or polyhydroxy alcohols, saturated or unsaturated C1-C18 fatty alcohols, saturated or unsaturated C1-C18 fatty acids, saturated or unsaturated fatty esters with up to 24 carbons, diesters of saturated or unsaturated discarboxylic acids with a total of up to 24 carbons, phosphatidyl derivatives, terpenes, amides, ketones, ureas and their derivatives, and ethers.
- Suitable binding materials for transdermal delivery systems are known to those skilled in the art and include polyacrylates, silicones, polyurethanes, block polymers, styrenebutadiene coploymers, and natural and synthetic rubbers. Cellulose ethers, derivatized polyethylenes, and silicates may also be used as matrix components. Additional additives, such as viscous resins or oils may be added to increase the viscosity of the matrix.
- Phamaceutical compositions of the invention may also be in the form of oil-in-water emulsions. The oil phase may be a vegetable oil, for example olive oil or arachis oil, or a mineral oil, for example liquid paraffin or mixtures of these. Suitable emulsifying agents may be naturally-occurring gums, for example gum acacia or gum tragacanth, naturally-occurring phosphatides, for example soy bean, lecithin, and esters or partial esters derived from fatty acids and hexitol anhydrides, for example sorbitan monooleate, and condensation products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monooleate. The emulsions may also contain sweetening and flavoring agents.
- Syrups and elixirs may be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose. Such formulations may also contain a demulcent, a preservative and flavoring and coloring agents.
- The compounds may also be administered in the form of suppositories for rectal administration of the drug. These compositions can be prepared by mixing the drug with a suitable non-irritating excipient which is solid at ordinary temperatures but liquid at the rectal or vaginal temperature and will therefore melt in the rectum or vagina to release the drug. Such materials include cocoa butter and polyethylene glycols.
- For all regimens of use disclosed herein for compounds of Formula I, the daily oral dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight. The daily dosage for administration by injection, including intravenous, intramuscular, subcutaneous and parenteral injections, and use of infusion techniques will preferably be from 0.01 to 200 mg/Kg of total body weight. The daily vaginal dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight. The daily rectal dosage regimen will preferably be from 0.01 to 200 mg/Kg of total body weight. The transdermal concentration will preferably be that required to maintain a daily dose of from 0.01 to 200 mg/Kg. The daily topical dosage regimen will preferably be from 0.1 to 200 mg administered between one to four times daily. The daily inhalation dosage regimen will preferably be from 0.01 to 10 mg/Kg of total body weight.
- It will be appreciated by those skilled in the art that the particular method of administration will depend on a variety of factors, all of which are considered routinely when administering therapeutics. It will also be understood, however, that the specific dose level for a given patient depends on a variety of factors, including specific activity of the compound administered, the age of the patient, the body weight of the patient, the general health of the patient, the gender of the patient, the diet of the patient, time of administration, route of administration, rate of excretion, drug combination, and the severity of the condition undergoing therapy, etc. It will be further appreciated by one skilled in the art that the optimal course of treatment, i.e., the mode of treatment and the daily number of doses of a compound of Formula I or a pharmaceutically acceptable salt thereof given for a defined number of days, can be ascertained by those skilled in the art using conventional course of treatment tests.
- The compounds of FIG. I are producible from known compounds (or from starting materials which, in turn, are producible from known compounds), e.g., through the general preparative methods shown above, The activity of a given compound to inhibit raf kinase can be routinely assayed, e.g., according to procedures disclosed below. The following examples are for illustrative purposes only and are not intended, nor should they be construde to limit the invention in any way.
- The entire disclosure of all applications, patents and publications cited above and below are hereby incorporated by reference, including provisional application serial number attorney docket number Bayer 10-V1, filed on Dec. 22, 1997 as Ser. No. 08/995,749, and converted on Dec. 22, 1998.
- The following examples are for illustrative purposes only and are not intended, nor should they be construed to limit the invention in any way.
- All reactions were performed in flame-dried or oven-dried glassware under a positive pressure of dry argon or dry nitrogen, and were stirred magnetically unless otherwise indicated. Sensitive liquids and solutions were transferred via syringe or cannula, and introduced into reaction vessels through rubber septa. Unless otherwise stated, the term ‘concentration under reduced pressure’ refers to use of a Buchi rotary evaporator at approximately 15 mmHg.
- All temperatures are reported uncorrected in degrees Celsius (° C.). Unless otherwise indicated, all parts and percentages are by weight.
- Commercial grade reagents and solvents were used without further purification. Thin-layer chromatography (TLC) was performed using Whatman® pre-coated glass-backed silica gel 60A F-254 250 μm plates. Visualization of plates was effected by one or more of the following techniques: (a) ultraviolet illumination, (b) exposure to iodine vapor, (c) immersion of the plate in a 10% solution of phosphomolybdic acid in ethanol followed by heating, (d) immersion of the plate in a cerium sulfate solution followed by heating, and/or (e) immersion of the plate in an acidic ethanol solution of 2,4-dinitrophenylhydrazine followed by heating. Column chromatography (flash chromatography) was performed using 230-400 mesh EM Science® silica gel.
- Melting points (mp) were determined using a Thomas-Hoover melting point apparatus or a Mettler FP66 automated melting point apparatus and are uncorrected. Fourier transform infrared sprectra were obtained using a Mattson 4020 Galaxy Series spectrophotometer. Proton (1H) nuclear magnetic resonance (NMR) spectra were measured with a General Electric GN-Omega 300 (300 MHz) spectrometer with either Me4Si (d 0.00) or residual protonated solvent (CHCl3 δ 7.26; MeOH δ 3.30; DMSO δ 2.49) as standard. Carbon (13C) NMR spectra were measured with a General Electric ON-Omega 300 (75 MHz) spectrometer with solvent (CDCl3 δ 77.0; MeOD-d3δ 49.0; DMSO-d6 δ 39.5) as standard. Low resolution mass spectra (MS) and high resolution mass spectra (HRMS) were either obtained as electron impact (EI) mass spectra or as fast atom bombardment (FAB) mass spectra. Electron impact mass spectra (EI-MS) were obtained with a Hewlett Packard 5989A mass spectrometer equipped with a Vacumetrics Desorption Chemical Ionization Probe for sample introduction. The ion source was maintained at 250° C. Electron impact ionization was performed with electron energy of 70 eV and a trap current of 300 μA. Liquid-cesium secondary ion mass spectra (FAB-MS), an updated version of fast atom bombardment were obtained using a Kratos Concept 1-H spectrometer. Chemical ionization mass spectra (CI-MS) were obtained using a Hewlett Packard MS-Engine (5989A) with methane or ammonia as the reagent gas (1×10−4 torr to 2.5×10−4 torr). The direct insertion desorption chemical ionization (DCI) probe (Vacuumetrics, Inc.) was ramped from 0-1.5 amps in 10 sec and held at 10 amps until all traces of the sample disappeared (˜1-2 min). Spectra were scanned from 50-800 amu at 2 sec per scan. HPLC-electrospray mass spectra (HPLC ES-MS) were obtained using a Hewlett-Packard 1100 HPLC equipped with a quaternary pump, a variable wavelength detector, a C-18 column, and a Finnigan LCQ ion trap mass spectrometer with electrospray ionization. Spectra were scanned from 120-800 amu using a variable ion time according to the number of ions in the source. Gas chromatography-ion selective mass spectra (GC-MS) were obtained with a Hewlett Packard 5890 gas chromatograph equipped with an HP-1 methyl silicone column (0.33 mM coating; 25 m×0.2 mm) and a Hewlett Packard 5971 Mass Selective Detector (ionization energy 70 eV). Elemental analyses are conducted by Robertson Microlit Labs, Madison N.J.
- All compounds displayed NMR spectra, LRMS and either elemental analysis or HRMS consistant with assigned structures.
- AcOH acetic acid
anh anhydrous
BOC tert-butoxycarbonyl
conc concentrated
dec decomposition
DMPU 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone - DMSO dimethylsulfoxide
DPPA diphenylphosphoryl azide
EtOAc ethyl acetate
EtOH ethanol (100%)
Et2O diethyl ether
Et3N triethylamine
m-CPBA 3-chloroperoxybenzoic acid
MeOH methanol
pet. ether petroleum ether (boiling range 30-60° C.)
THF tetrahydrofuran
TFA trifluoroacetic acid
Tf trifluoromethanesulfonyl -
- Step 1. 4-tert-Butyl-1-(2,5-dioxo-1-pyrrolidinyl)-2-nitrobenzene: To a solution of 4-tert-butyl-2-nitroaniline (1.04 g, 5.35 mmol) in xylene (25 mL) was added succinic anhydride (0.0535 g, 5.35 mmol) and triethylamine (0.75 mL, 5.35 mmol). The reaction mixture was heated at the reflux temp. for 24 h, cooled to room temp. and diluted with Et2O (25 mL). The resulting mixture was sequentially washed with a 10% HCl solution (50 mL), a saturated NH4Cl solution (50 mL) and a saturated NaCl solution (50 mL), dried (MgSO4), and concentrated under reduced pressure. The residue was purified by flash chromatography (60% EtOAc/40% hexane) to yield the succinimide as a yellow solid (1.2 g, 86%): mp 135-138° C.; 1H NMR(CHCl3) δ 1.38 (s, 9H), 2.94-2.96 (m, 4H), 7.29-7.31 (m, 1H), 7.74-7.78 (m, 1H), 8.18-8.19 (m, 1H).
- Step 2. 5-tert-Butyl-2-(2,5-dioxo-1-pyrrolidinyl)aniline: To a solution of 4-tert-butyl-1-(2,5-dioxo-1-pyrrolidinyl)-2-nitrobenzene (1.1 g, 4.2 mmol in EtOAc (25 mL) was added a 10% Pd/C (0.1 g). The resulting slurry was placed under a H2 atmosphere using 3 cycles of an evacuate-quench protocol and was allowed to stir under a H2 atmosphere for 8 h. The reaction mixture was filtered through a pad of Celite® and the residue was washed with CHCl3. The combined filtrate was concentrated under reduced pressure to yield the desired aniline as an off-white solid (0.75 g, 78%); mp 208-211° C.; 1H-NMR (DMSO-d6) δ 1.23 (s, 9H), 2.62-2.76 (m, 4H), 5.10 (br s, 2H), 6.52-6.56 (m, 1H), 6.67-6.70 (m, 2H).
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- Step 1. 4-tert-Butyl-1-(3-tetrahydrofuranyloxy)-2-nitrobenzene: To a solution of 4-tert-butyl-2-nitrophenol (1.05 g, 5.4 mmol) in anh THF (25 mL) was added 3-hydroxytetrahydrofuran (0.47 g, 5.4 mmol) and triphenylphosphine (1.55 g, 5.9 mmol) followed by diethyl azodicarboxylate (0.93 ml, 5.9 mmol) and the mixture was allowed to stir at room temp. for 4 h. The resulting mixture was diluted with Et2O (50 mL) and washed with a saturated NH4Cl solution (50 mL) and a saturated NaCl solution (50 mL), dried (MgSO4), and concentrated under reduced pressure. The residue was purified by flash chromatography (30% EtOAc/70% hexane) to yield the desired ether as a yellow solid (1.3 g, 91%): 1H-NMR (CHCl3) δ 1.30 (s, 9H), 2.18-2.24 (m, 2H), 3.91-4.09 (m, 4H), 5.00-5.02 (m, 1H), 6.93 (d, J=8.8 Hz, 1H), 7.52 (dd, J=2.6, 8.8 Hz, 1H), 7.81 (d, J=2.6 Hz, 1H).
- Step 2. 5-tert-Butyl-2-(3-tetrahydrofuranyloxy) aniline: To a solution of 4-tert-butyl-1-(3-tetrahydrofuranyloxy)-2-nitrobenzene (1.17 g, 4.4 mmol) in EtOAc (25 mL) was added 10% Pd/C (0.1). The resulting slurry was placed under a H2 atmosphere using 3 cycles of an evacuate-quench protocol and was allowed to stir under a H2 atmosphere for 8 h. The reaction mixture was filtered through a pad of Celite® and washed with CHCl3. The combined filtrate was concentrated under reduced pressure to yield of the desired aniline as a yellow solid (0.89 g, 86%): mp 79-82° C.; 1H-NMR (CHCl3) δ 1.30 (s, 9H), 2.16-2.20 (m, 2H), 3.78 (br s, 2H), 3.85-4.10 (m, 4H), 4.90 (m, 1H), 6.65-6.82 (m, 3H).
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- Step 1. 2-Methoxy-5-(fluorosulfonyl)acetanilide: Acetic anhydride (0.90 mL, 9.6 mmol) was added to a solution of 4-methoxymetanilyl fluoride (1.0 g, 4.8 mmol) in pyridine (15 mL). After being stirred at room temp. for 4 h, the reaction mixture was concentrated under reduced pressure. The resulting residue was dissolved in CH2Cl2 (25 mL), washed with a saturated NaHCO3 solution (25 ml), dried (Na2SO4), and concentrated under reduced pressure to give a foam which was triturated with a Et2O/hexane solution to provide the title compound (0.85 g); 1H-NMR (CDCl3) δ 2.13 (s, 3H), 3.98 (s, 3H), 7.36 (d, J=8.5 Hz, 1H), 7.82 (dd, J=2.6, 8.8 Hz, 1H), 8.79 (d, J=2.2 Hz, 1H), 9.62 (br s, 1H).
- Step 2. 2-Methoxy-5-(trifluoromethanesulfonyl)acetanilide: To an ice-cooled suspension of tris(dimethylamino)sulfonium difluorotrimethylsiliconate (0.094 g, 0.34 mmol) in THF (4 mL) was added a solution of (trifluoromethyl)trimethylsilane (1.0 mL, 6.88 mmol) in THF (3 mL) followed by a solution of 2-methoxy-5-(fluorosulfonyl)acetanilide (0.85 g, 3.44 mmol) in THF (3 mL). The reaction mixture was stirred for 2 h on an ice bath, then was allowed to warm to room temp. and was then concentrated under reduced pressure. The resulting residue was dissolved in CH2Cl2 (25 mL), washed with water (25 mL), dried (Na2SO4), and concentrated under reduced pressure. The resulting material was purified by flash chromatography (3% MeOH/97% CH2Cl2) to provide the title compound as a white solid (0.62 g): 1H-NMR (CDCl3) δ 2.13 (s, 3H) 4.00 (s, 3H), 7.42 (d, J=8.8 Hz, 1H), 7.81 (dd, J=2.6, 8.8 Hz, 1H), 8.80 (d, J=2.2 Hz, 1H), 9.64 (br s, 1H); FAB-MS m/z 298 ((M+1)+).
- Step 3. 2-Methoxy-5-(trifluoromethanesulfonyl)aniline: A solution of 2-methoxy-5-(trifluoromethanesulfonyl)acetanilide (0.517 g, 1.74 mmol) in EtOH (5 mL) and a 1 N HCl solution (5 mL) was heated at the reflux temp. for 4 h and the resulting mixture was concentrated under reduced pressure. The residue was dissolved in CH2Cl2 (30 mL), washed with water (30 mL), dried (Na2SO4), and concentrated under reduced pressure to afford the title compound as a gum (0.33 g): 1H-NMR (CDCl3) δ 3.90 (s, 3H) 5.57 (br s, 2H), 7.11-7.27 (m, 3H); FAB-MS m/z 256 ((M+1)+). This material was used in urea formation without further purification.
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- Step 1. 2-Nitro-5-tert-butylphenol; A mixture of timing nitric acid (3.24 g, 77.1 mmol) in glacial HOAc (10 mL) was added dropwise to a solution of m-tert-butylphenol (11.58 g, 77.1 mmol) in glacial HOAc (15 mL) at 0° C. The mixture was allowed to stir at 0° C. for 15 min then warmed to room temp. After 1 h the mixture was poured into ice water (100 mL) and extracted with Et2O (2×50 mL). The organic layer was washed with a saturated NaCl solution (100 mL), dried (MgSO4) and concentrated in vacuo. The residue was purified by flash chromatography (30% EtOAc/70% hexane) to give the desired phenol (4.60 g, 31%): 1H-NMR (DMSO-d6) δ 1.23 (s, 9H), 7.00 (dd, J=1.84, 8.83 Hz, 1H), 7.07 (d, J=1.84 Hz, 1H), 7.82 (d, J=8.83 Hz, 1H), 10.74 (s, 1H).
- Step 2. 2-Nitro-5-tert-butylanisole: A slurry of 2-nitro-5-tert-butylphenol (3.68 g, 18.9 mmol) and K2CO3 (3.26 g, 23.6 mmol) in anh DMF (100 mL) was stirred at room temp with stirring for 15 min then treated with iodomethane (2.80 g, 19.8 mmol) via syringe. The reaction was allowed to stir at room temp for 18 h., then was treated with water (100 mL) and extracted with EtOAc (2×100 mL). The combined organic layers were washed with a saturated NaCl solution (50 mL), dried (MgSO4) and concentrated in vacuo to give the desired ether (3.95 g, 100%): 1H-NMR (DMSO-d6) δ 1.29 (s, 9H), 3.92 (s, 3H), 7.10 (dd, J=1.84, 8.46 Hz, 1H), 7.22 (d, J=1.84 Hz, 1H), 7.79 (d, J=8.46 Hz, 1H). This material was used in the next step without further purification.
- Step 3. 4-tert-Butyl-2-methoxyaniline: A solution of 2-nitro-5-tert-butylanisole (3.95 g, 18.9 mmol) in MeOH (65 mL) and added to a flask containing 10% Pd/C in MeOH (0.400 g), then placed under a H2 atmosphere (balloon). The reaction was allowed to stir for 18 h at room temp, then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a dark sticky solid (3.40 g, 99%): 1H-NMR (DMSO-d6) δ 1.20 (s, 9H), 3.72 (s, 3H), 4.43 (br s, 2H), 6.51 (d, J=8.09 Hz, 1H), 6.64 (dd, J=2.21, 8.09 Hz, 1H), 6.76 (d, J=2.21 Hz, 1H).
-
- Step 1. Methyl 2-Nitro-4-(trifluoromethyl)benzoate: To a solution of 2-nitro-4-(trifluoromethyl)benzoic acid (4.0 g, 17.0 mmol) in MeOH (150 mL) at room temp was added conc H2SO4 (2.5 mL). The mixture was heated at the reflux temp for 24 h., cooled to room temp and concentrated in vacuo. The residue was diluted with water (100 mL) and extracted with EtOAc (2×100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO4), concentrated in vacuo. The residue was purified by flash chromatography (14% EtOAc/86% hexane) to give the desired ester as a pale yellow oil (4.17 g, 98%): 1H-NMR (DMSO-d6) δ 3.87 (s, 3H), 8.09 (d, J=7.72 Hz, 1H), 8.25 (dd, J=1.11, 8.09 Hz, 1H), 8.48 (d, J=1.11 Hz, 1H).
- Step 2. Methyl 2-Amino-4-(trifluoromethyl)benzoate; A solution of methyl 2-nitro-4-(trifluoromethyl)benzoate (3.90 g, 15.7 mmol) in EtOAc (100 mL) and added to a flask containing 10% Pd/C (0.400 mg) in EtOAc (10 mL), then placed under a H2 atmosphere (balloon). The reaction was allowed to stir for 18 h at room temp, then was filtered through Celite® and concentrated in vacuo to afford the desired product as a white crystalline solid (3.20 g, 93%): 1H-NMR (DMSO-d6) δ 3.79 (s, 3H), 6.75 (dd, J=1.84, 8.46 Hz, 1H), 6.96 (br s, 2H), 7.11 (d, J=0.73 Hz, 1H), 7.83 (d, J=8.09 Hz, 1H).
-
- Step 1. Methyl 3-Methoxy-2-naphthoate, A slurry of methyl 3-hydroxy-2-naphthoate (10.1 g, 50.1 mmol) and K2CO3 (7.96 g, 57.6 mmol) in DMF (200 mL) was stirred at room temp for 15 min, then treated with iodomethane (3.43 mL, 55.1 mmol). The mixture was allowed to stir at room temp overnight, then was treated with water (200 ml). The resulting mixture was extracted with EtOAc (2×200 mL). The combined organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO4), concentrated in vacuo (approximately 0.4 mmHg overnight) to give the desired ether as an amber oil (10.30 g): 1H-NMR (DMSO-d6) δ 2.70 (s, 3H), 2.85 (s, 3H), 7.38 (app t, J=8.09 Hz, 1H), 7.44 (s, 1H), 7.53 (app t, J=8.09 Hz, 1H), 7.84 (d, J=8.09 Hz, 1H), 7.90 (s, 1H), 8.21 (s, 1H).
- Step 2. 3-Methoxy-2-naphthoic Acid: A solution of methyl 3-methoxy-2-naphthoate (6.28 g, 29.10 mmol) and water (10 mL) in MeOH (100 mL) at room temp was treated with a 1 N NaOH solution (33.4 mL, 33.4 mmol). The mixture was heated at the reflux temp for 3 h, cooling to room temp, and made acidic with a 10% citric acid solution. The resulting solution was extracted with EtOAc (2×100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO4) and concentrated in vacuo. The residue was triturated with hexanes and washed several times with hexanes to give the desired carboxylic acid as a white crystalline solid (5.40 g, 92%): 1H-NMR (DMSO-d6) δ 3.88 (s, 3H), 7.34-7.41 (m, 2H), 7.49-7.54 (m, 1H), 7.83 (d, J=8.09 Hz, 1H), 7.91 (d, J=8.09 Hz, 1H), 8.19 (s, 1H), 12.83 (br s, 1H).
- Step 3. 2-(N—(Carbobenzyloxy)amino-3-methoxynaphthalene: A solution of 3-methoxy-2-naphthoic acid (3.36 g, 16.6 mmol) and Et3N (2.59 mL, 18.6 mmol) in anh toluene (70 mL) was stirred at room temp. for 15 min., then treated with a solution of diphenylphosphoryl azide (5.12 g, 18.6 mmol) in toluene (10 mL) via pipette. The resulting mixture was heated at 80° C. for 2 h. After cooling the mixture to room temp. benzyl alcohol (2.06 mL, 20 mmol) was added via syringe. The mixture was then warmed to 80° C. overnight. The resulting mixture was cooled to room temp., quenched with a 10% citric acid solution, and extracted with EtOAc (2×100 mL). The combined organic layers were washed with a saturated NaCl solution, dried (MgSO4), and concentrated in vacuo. The residue was purified by flash chromatography (14% EtOAc/86% hexane) to give the benzyl carbamate as a pale yellow oil (5.1 g, 100%): 1H-NMR (DMSO-d6) δ 3.89 (s, 3H), 5.17 (s, 2H), 7.27-7.44 (m, 8H), 7.72-7.75 (m, 2H), 8.20 (s, 1H), 8.76 (s, 1H).
- Step 4. 2-Amino-3-methoxynaphthalene: A slurry of 2-(N-(carbobenzyloxy)amino-3-methoxynaphthalene (5.0 g, 16.3 mmol) and 10% Pd/C (0.5 g) in EtOAc (70 mL) was maintained under a H2 atmospheric (balloon) at room temp. overnight. The resulting mixture was filtered through Celite® and concentrated in vacuo to give the desired amine as a pale pink powder (2.40 g, 85%): 1H-NMR (DMSO-d6) δ 3.86 (s, 3H), 6.86 (s, 2H), 7.04-7.16 (m, 2H), 7.43 (d, J=8.0 Hz, 1H), 7.56 (d, J=8.0 Hz, 1H); EI-MS m/z 173 (M+).
-
- Step 1. 5-tert-Butyl-2-(trifluoromethanesulfonyl)oxy-1-nitrobenzene: To an ice cold solution of 4-tert-butyl-2-nitrophenol (6.14 g, 31.5 mmol) and pyridine (10 mL, 125 mmol) in CH2Cl2 (50 mL) was slowly added trifluoromethanesulfonic anhydride (10 g, 35.5 mmol) via syringe. The reaction mixture was stirred for 15 min, then allowed to warm up to room temp. and diluted with CH2Cl2 (100 mL). The resulting mixture was sequentially washed with a 1M NaOH solution (3×100 mL), and a 1M HCl solution (3×100 mL), dried (MgSO4), and concentrated under reduced pressure to afford the title compound (8.68 g, 84%): 1H-NMR (CDCl3) δ 1.39 (s, 9H), 7.30-8.20 (m, 3H).
- Step 2. 5-tert-Butyl-2-(3-fluorophenyl)-1-nitrobenzene: A mixture of 3-fluorobenzeneboronic acid (3.80 g, 27.5 mmol), KBr (2.43 g, 20.4 mmol), K3PO4 (6.1 g, 28.8 mmol), and Pd(PPh3)4 (1.0 g, 0.9 mmol) was added to a solution of 5-tert-butyl-2-(trifluoromethanesulfonyl)oxy-1-nitrobenzene (6.0 g, 18.4 mmol) in dioxane (100 mL). The reaction mixture was heated at 80° C. for 24 h, at which time TLC indicated complete reaction. The reaction mixture was treated with a saturated NH4Cl solution (50 mL) and extracted EtOAc (3×100 mL). The combined organic layers were dried (MgSO4) and concentrated under reduced pressure. The residue was purified by flash chromatography (3% EtOAc/97% hexane) to give the title compound (4.07 g, 81%): 1H-NMR (CDCl3) δ 1.40 (s, 9H), 6.90-7.90 (m, 7H).
- Step 3. 5-tert-Butyl-2-(3-fluorophenyl)aniline: To a solution of 5-tert-butyl-2-(3-fluorophenyl)-1-nitrobenzene (3.5 g, 12.8 mmol) and EtOH (24 mL) in EtOAc (96 mL) was added 5% Pd/C (0.350 g) and the resulting slurry was stirred under a H2 atmosphere for 24 h, at which time TLC indicated complete consumption of starting material. The reaction mixture was filtered through a pad of Celite® to give the desired product (2.2 g, 72%): 1H-NMR (CDCl3) δ 1.35 (s, 9H), 3.80 (br s, 2H), 6.90-7.50 (m, 7H).
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- Step 1. 4-(4-(2-Propoxycarbonylamino)phenyl)methylaniline: A solution of di-tert-butyl dicarbonate (2.0 g, 9.2 mmol) and 4,4′-methylenedianiline (1.8 g, 9.2 mmol) in DMF (100 mL) was heated at the reflux temp. for 2 h, then cooled to room temp. This mixture was diluted with EtOAc (200 mL) sequentially washed with a saturated NH4Cl (200 mL) and a saturated NaCl solution (100 mL), and dried (MgSO4). The residue was purified by flash chromatography (30% EtOAc/70% hexane) to give the desired carbamate (1.3 g, 48%): 1H-NMR (CDCl3) δ 1.51 (s, 9H), 3.82 (s, 2H), 6.60-7.20 (m, 8H).
- Step 2. 4-(4-(2-Propoxycarbonylamino)phenyl)methyl-1-nitrobenzene: To an ice cold solution of 4-(4-(2-propoxycarbonylamino)phenyl)methylaniline (1.05 g, 3.5 mmol) in CH2Cl2 (15 mL) was added m-CPBA (1.2 g, 7.0 mmol). The reaction mixture was slowly allowed to warm to room temp. and was stirred for 45 min, at which time TLC indicated disappearance of starting material. The resulting mixture was diluted with EtOAc (50 mL), sequentially washed with a 1M NaOH solution (50 mL) and a saturated NaCl solution (50 mL), and dried (MgSO4). The residue was purified by flash chromatography (20% EtOAc/80% hexane) to give the desired nitrobenzene (0.920 g): FAB-MS m/z 328 (M+).
- Step 3. 4-(4-Nitrophenyl)methylaniline: To a solution of 4-(4-(2-propoxycarbonylamino)phenyl)methyl-1-nitrobenzene (0.920 g, 2.8 mmol) in dioxane (10 mL) was added a conc. HCl solution (4.0 mL) and the resulting mixture was heated at 80° C. for 1 h at which time TLC indicated disappearance of starting material. The reaction mixture was cooled to room temp. The resulting mixture was diluted with EtOAc (50 mL), then washed with a 1M NaOH solution (3×50 mL), and dried (MgSO4) to give the desired aniline (0.570 mg, 89%): 1H-NMR (CDCl3) δ 3.70 (br s, 2H), 3.97 (s, 2H), 6.65 (d, J=8.5 Hz, 2H), 6.95 (d, J=8.5 Hz, 2H), 7.32 (d, J=8.8 Hz, 2H), 8.10 (d, J=8.8 Hz, 2H).
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- Step 1. 4-(α-Bromoacetyl)morpholine: To an ice cold solution of morpholine (2.17 g, 24.9 mmol) and diisopropylethylamine (3.21 g, 24.9 mmol) in CH2Cl2 (70 mL) was added a solution of bromoacetyl bromide (5.05 g, 25 mmole) in CH2Cl2 (8 mL) via syringe. The resulting solution was kept at 0° C. for 45 min, then was allowed to warm to room temp. The reaction mixture was diluted with EtOAc (500 mL), sequentially washed with a 1M HCl solution (250 mL) and a saturated NaCl solution (250 mL), and dried (MgSO4) to give the desired product (3.2 g, 62%): 1H-NMR (DMSO-d6) δ 3.40-3.50 (m, 4H), 3.50-3.60 (m, 4H), 4.11 (s, 2H)
- Step 2. 2-(N-Morpholinylcarbonyl)methoxy-5-tert-butyl-1-nitrobenzene: A slurry of 4-tert-butyl-2-nitrophenol (3.9 g, 20 mmol) and K2CO3 (3.31 g, 24 mmol) in DMF (75 mL) was stirred at room temp. for 15 minutes, then a solution of 4-(α-bromoacetyl)morpholine (4.16 g, 20 mmol) in DMF (10 mL) was added. The reaction was allowed to stir at room temp. overnight, then was diluted with EtOAc (500 mL) and sequentially washed with a saturated NaCl solution (4×200 mL) and a 1M NaOH solution (400 mL). The residue was purified by flash chromatography (75% EtOAc/25% hexane) to give the nitrobenzene (2.13 g, 33%): 1H-NMR (DMSO-d6) δ 1.25 (s, 9H), 3.35-3.45 (m, 4H), 3.50-3.58 (m, 4H), 5.00 (s, 2H), 7.12 (d, J=8.8 Hz, 1H), 7.50-7.80 (m, 2H).
- Step 3. 2-(N-Morpholinylcarbonyl)methoxy-5-tert-butylanline: To a solution of 2-(N-morpholinaylcarbonyl)methoxy-5-tert-butyl-1-nitrobenzene (2.13 g, 6.6 mmol) and EtOH (10 mL) in EtOAc (40 mL) was added 5% Pd/C (0.215 g), The resulting slurry was stirred under a H2 atmosphere for 6 h, at which time TLC indicated complete consumption of starting material. The reaction mixture was filtered through a pad of Celite® to give the desired product (1.9 g, 98%): 1H-NMR (DMSO-d6) δ 1.18 (s, 9H), 3.40-3.50 (m, 4H), 3.50-3.60 (m, 4H), 4.67 (br s, 2H), 4.69 (s, 2H), 6.40-6.70 (m, 3H).
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- Step 1. 5-tert-Butyl-2-(2-hydroxyethoxy)-1-nitrobenzene: A solution of 4-tert-butyl-2-nitrophenol (30 g, 0.15 mol) and tetra-n-butylammonium fluoride (0.771 g, 3.0 mmol) in ethylene carbonate (10.24 mL. 0.15 mol) was heated at 150° C. for 18 hi, then cooled to room temp. and separated between water (50 mL) and CH2Cl2 (50 mL). The organic layer was dried (MgSO4) and concentrated under reduced pressure. The residue was purified by column chromatography (20% EtOAc/80% hexane) to afford the desired product as a brown oil (35.1 g, 90%): 1H-NMR (DMSO-d6) δ 1.25 (s, 9H), 3.66-3.69 (m, 2H), 4.10-4.14 (t, J=5.0 Hz, 2H), 4.85 (t, J=5.0 Hz, 1H), 7.27 (d, J=8.8 Hz, 1H), 7.60-7.64 (m, 1H), 7.75 (d, J=2.6 Hz, 1H).
- Step 2. 5-tert-Butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)-1-nitrobenzene: A solution of 5-tert-butyl-2-(2-hydroxyethoxy)-1-nitrobenzene (0.401 g, 1.68 mmol), di-tert-butyl dicarbonate (0.46 mL, 2.0 mmol) and dimethylaminopyridine (0.006 g, 0.05 mmol) in CH2Cl2 (15 mL) was stirred at room temp. for 30 min, at which time TLC indicated consumption of starting material. The resulting mixture was washed with water (20 mL), dried (MgSO4) and concentrated under reduced pressure. The residue was purified by column chromatography (3% MeOH/97% CH2Cl2) to give the desired product as a yellow oil (0.291 g, 51%): 1H-NMR (DMSO-d6) δ 1.25 (s, 9H), 1.38 (s, 9H), 4.31 (br s, 4H), 7.27 (d, J=9.2 Hz, 1H) 7.64 (dd, J=2.6, 8.8 Hz, 1H) 7.77 (d, J=2.6 Hz, 1H).
- Step 3. 5-tert-Butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)aniline: To a mixture of 5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)-1-nitrobenzene (0.290 g, 0.86 mmol) and 5% Pd/C (0.058 g) in MeOH (2 mL) was ammonium formate (0.216 g, 3.42 mmol), and the resulting mixture was stirred at room temp. for 12 h, then was filtered through a pad of Celite® with the aid of EtOH. The filtrate was concentrated under reduced pressure and the residue was purified by column chromatography (2% MeOH/98% CH2Cl2) to give the desired product as a pale yellow oil (0.232 g, 87%); TLC (20% EtOAc/80% hexane) R∫0.63; 1H-NMR (DMSO-d6) δ 1.17 (s, 9H), 1.39 (s, 9H), 4.03-4.06 (m, 2H), 4.30-4.31 (m, 2H), 4.54 (br s, 2H), 6.47 (dd, J=2.2, 8.1 Hz, 1H) 6.64-6.67 (m, 2H).
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- 4-(4-Pyridinylmethyl)aniline: To a solution of 4-(4-nitrobenzyl)pyridine (7.0 g, 32.68 mmol) in EtOH (200 mL) was added 10% Pd/C (0.7 g) and the resulting slurry was shaken under a H2 atmosphere (50 psi) using a Parr shaker. After 1 h, TLC and 1H-NMR of an aliquot indicated complete reaction. The mixture was filtered through a short pad of Celite®. The filtrate was concentrated in vacuo to afford a white solid (5.4 g, 90%): 1H-NMR (DMSO-d6) δ 3.74 (s, 2H), 4.91 (br s, 2H), 6.48 (d, J=8.46 Hz, 2H), 6.86 (d, J=8.09 Hz, 2H), 7.16 (d, J=5.88 Hz, 2H), 8.40 (d, J=5.88 Hz, 2H); EI-MS m/z 184 (M+) This material was used in urea formation reactions without further purification.
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- 4-(2-Pyridinylthio)aniline. To a solution of 4-(2-pyridinylthio)-1-nitrobenzene (Menai ST 3355A; 0.220 g, 0.95 mmol) and H2O (0.5 mL) in AcOH (5 mL) was added iron powder (0.317 g, 5.68 mmol) and the resulting slurry stirred for 16 h at room temp. The reaction mixture was diluted with EtOAc (75 ml) and H2O (50 mL), basified to pH 10 by adding solid K2CO3 in portions (Caution: foaming). The organic layer was washed with a saturated NaCl solution, dried (MgSO4), concentrated in vacuo. The residual solid was purified by MPLC (30% EtOAc/70% hexane) to give the desired product as a thick oil (0.135 g, 70%): TLC (30% EtOAc/70% hexanes) R∫20.
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- Step 1. 1-Methoxy-4-(4-nitrophenoxy)benzene: To a suspension of NaH (95%, 1.50 g, 59 mmol) in DMF (100 mL) at room temp. was added dropwise a solution of 4-methoxyphenol (7.39 g, 59 mmol) in DMF (50 mL). The reaction was stirred 1 h, then a solution of 1-fluoro-4-nitrobenzene (7.0 g, 49 mmol) in DMF (50 mL) was added dropwise to form a dark green solution. The reaction was heated at 95° C. overnight, then cooled to room temp., quenched with H2O, and concentrated in vacuo. The residue was partitioned between EtOAc (200 mL) and H2O (200 mL). The organic layer was sequentially washed with H2O (2×200 mL), a saturated NaHCO3 solution (200 mL), and a saturated NaCl solution (200 mL), dried (Na2SO4), and concentrated in vacuo. The residue was triturated (Et2O/hexane) to afford 1-methoxy-4-(4-nitrophenoxy)benzene (12.2 g, 100%): 1H-NMR (CDCl3) δ 3.83 (s, 3H), 6.93-7.04 (m, 6H), 8.18 (d, J=9.2 Hz, 2H); EI-MS m/z 245 (M+).
- Step 2. 4-(4-Methoxyphenoxy)aniline: To a solution of 1-methoxy-4-(4-nitrophenoxy)benzene (12.0 g, 49 mmol) in EtOAc (250 mL) was added 5% Pt/C (1.5 g) and the resulting slurry was shaken under a H2 atmosphere (50 psi) for 18 h. The reaction mixture was filtered through a pad of Celite® with the aid of EtOAc and concentrated in vacuo to give an oil which slowly solidified (10.6 g, 100%): 1H-NMR (CDCl3) δ 3.54 (br s, 2H), 3.78 (s, 3H), 6.65 (d, J=8.8 Hz, 2H), 6.79-6.92 (m, 6H); EI-MS m/z 215 (M+).
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- Step 1. 3-(Trifluoromethyl)-4-(4-pyridinylthio)nitrobenzene: A solution of 4-mercaptopyridine (2.8 g, 24 mmoles), 2-fluoro-5-nitrobenzotrifluoride (5 g, 23.5 mmoles), and potassium carbonate (6.1 g, 44.3 mmoles) in anhydrous DMF (80 mL) was stirred at room temperature and under argon overnight. TLC showed complete reaction. The mixture was diluted with Et2O (100 mL) and water (100 mL) and the aqueous layer was back-extracted with Et2O (2×100 mL). The organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO4), and concentrated under reduced pressure. The solid residue was triturated with Et2O to afford the desired product as a tan solid (3.8 g, 54%): TLC (30% EtOAc/70% hexane) R˜0.06; 1H-NMR (DMSO-d6) δ 7.33 (dd, J=1.2, 4.2 Hz, 2H), 7.78 (d, J==8.7 Hz, 1H), 8.46 (dd, J=2.4, 8.7 Hz, 1H), 8.54-8.56 (m, 3H).
- Step 2. 3-(Trifluoromethyl)-4-(4-pyridinylthio)aniline. A slurry of 3-trifluoromethyl-4-(4-pyridinylthio)nitrobenzene (3.8 g, 12.7 mmol), iron powder (4.0 g, 71.6 mmol), acetic acid (100 mL), and water (1 mL) were stirred at room temp. for 4 h. The mixture was diluted with Et2O (100 mL) and water (100 mL). The aqueous phase was adjusted to pH 4 with a 4 N NaOH solution. The combined organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO4), and concentrated under reduced pressure. The residue was filtered through a pad of silica (gradient from 50% EtOAc/50% hexane to 60% EtOAc/40% hexane) to afford the desired product (3.3 g): TLC (50% EtOAc/50% hexane) R∫0.10; 1H-NMR (DMSO-d6) δ 6.21 (s, 2H), 6.84-6.87 (m, 3H), 7.10 (d, J=2.4 Hz, 1H), 7.39 (d, J=8.4 Hz, 1H), 8.29 (d, J=6.3 Hz, 2H).
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- Step 1. 4-(2-(4-Phenyl)thiazolyl)thio-1-nitrobenzene: A solution of 2-mercapto-4-phenylthiazole (4.0 g, 20.7 mmoles) in DMF (40 mL) was treated with 1-fluoro-4-nitrobenzene (2.3 ml, 21.7 mmoles) followed by K2CO3 (3.18 g, 23 mmol), and the mixture was heated at approximately 65° C. overnight. The reaction mixture was then diluted with EtOAc (100 mL), sequentially washed with water (100 mL) and a saturated NaCl solution (100 mL), dried (MgSO4) and concentrated under reduced pressure. The solid residue was triturated with a Et2O/hexane solution to afford the desired product (6.1 g): TLC (25% EtOAc/75% hexane) R∫0.49; 1H-NMR (CDCl3) δ 7.35-7.47 (m, 3H), 7.58-7.63 (m, 3H), 7.90 (d, J=6.9 Hz, 2H), 8.19 (d, J=9.0 Hz, 2H).
- Step 2. 4-(2-(4-Phenyl)thiazolyl)thioaniline: 4-(2-(4-Phenyl)thiazolyl)thio-1-nitro-benzene was reduced in a manner analagous to that used in the preparation of 3-(trifluoromethyl)-4-(4-pyridinylthio)aniline: TLC (25% EtOAc/75% hexane) R∫0.18; 1H-NMR (CDCl3) δ 3.89 (br s, 2H), 6.72-6.77 (m, 2H), 7.26-7.53 (m, 6H), 7.85-7.89 (m, 2H).
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- Step 1. 4-(6-Methyl-3-pyridinyloxy)-1-nitrobenzene: to a solution of 5-hydroxy-2-methylpyridine (5.0 g, 45.8 mmol) and 1-fluoro-4-nitrobenzene (6.5 g, 45.8 mmol) in anh DMF (50 mL) was added K2CO3 (13.0 g, 91.6 mmol) in one portion. The mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The resulting mixture was poured into water (200 mL) and extracted with EtOAc (3×150 mL). The combined organics were sequentially washed with water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried (Na2SO4), and concentrated in vacuo to afford the desired product (8.7 g, 83%). The this material was carried to the next step without further purification.
- Step 2. 4-(6-Methyl-3-pyridinyloxy)aniline: A solution of 4-(6-methyl-3-pyridinyloxy)-1-nitrobenzene (4.0 g, 17.3 mmol) in EtOAc (150 mL) was added to 10% Pd/C (0.500 g, 0.47 mmol) and the resulting mixture was placed under a H2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a tan solid (3.2 g, 92%): EI-MS m/z 200 (M+).
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- Step 1. 4-(3,4-Dimethoxyphenoxy)-1-nitrobenzene: To a solution of 3,4-dimethoxyphenol (1.0 g, 6.4 mmol) and 1-fluoro-4-nitrobenzene (700 μL, 6.4 mmol) in anh DMF (20 mL) was added K2CO3 (1.8 g, 12.9 mmol) in one portion. The mixture was heated at the reflux temp with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (100 mL) and extracted with EtOAc (3×100 mL). The combined organics were sequentially washed with water (3×50 mL) and a saturated NaCl solution (2×50 mL), dried (Na2SO4), and concentrated in vacuo to afford the desired product (0.8 g, 54%). The crude product was carried to the next step without further purification.
- Step 2. 4-(3,4-Dimethoxyphenoxy)aniline: A solution of 4-(3,4-dimethoxy-phenoxy)-1-nitrobenzene (0.8 g, 3.2 mmol) in EtOAc (50 mL) was added to 10% Pd/C (0.100 g) and the resulting mixture was placed under a H2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a white solid (0.6 g, 75%): EI-MS m/z 245 (M+).
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- Step 1. 3-(3-Pyridinyloxy)-1-nitrobenzene; To a solution of 3-hydroxypyridine (2.8 g, 29.0 mmol), 1-bromo-3-nitrobenzene (5.9 g, 29.0 mmol) and copper(I) bromide (5.0 g, 34.8 mmol) in anh DMF (50 mL) was added K2CO3 (8.0 g, 58.1 mmol) in one portion. The resulting mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (200 mL) and extracted with EtOAc (3×150 mL). The combined organics were sequentially washed with water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried Na2SO4), and concentrated in vacuo. The resulting oil was purified by flash chromatography (30% EtOAc/70% hexane) to afford the desired product (2.0 g, 32%). This material was used in the next step without further purification.
- Step 2. 3-(3-Pyridinyloxy)aniline: A solution of 3-(3-pyridinyloxy)-1-nitrobenzene (2.0 g, 9.2 mmol) in EtOAc (100 mL) was added to 10% Pd/C (0.200 g) and the resulting mixture was placed under a H2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a red oil (1.6 g, 94%): EI-MS m/z 186 (M+).
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- Step 1. 3-(5-Methyl-3-pyridinyloxy)-1-nitrobenzene: To a solution of 3-hydroxy-5-methylpyridine (5.0 g, 45.8 mmol), 1-bromo-3-nitrobenzene (12.0 g, 59.6 mmol) and copper(I) iodide (10.0 g, 73.3 mmol) in anh DMF (50 mL) was added K2CO3 (13.0 g, 91.6 mmol) in one portion. The mixture was heated at the reflux temp. with stirring for 18 h and then allowed to cool to room temp. The mixture was then poured into water (200 mL) and extracted with EtOAc (3×150 mL). The combined organics were sequentially washed with water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried (Na2SO4), and concentrated in vacuo. The resulting oil was purified by flash chromatography (30% EtOAc/70% hexane) to afford the desired product (1.2 g, 13%).
- Step 2. 3-(5-Methyl-3-pyridinyloxy)-1-nitrobenzene: A solution of 3-(5-methyl-3-pyridinyloxy)-1-nitrobenzene (1.2 g, 5.2 mmol) in EtOAc (50 mL) was added to 10% Pd/C (0.100 g) and the resulting mixture was placed under a H2 atmosphere (balloon) and was allowed to stir for 18 h at room temp. The mixture was then filtered through a pad of Celite® and concentrated in vacuo to afford the desired product as a red oil (0.9 g, 86%): CI-MS m/z 201 ((M+H)+).
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- Step 1. 5-Nitro-2-(4-methylphenoxy)pyridine: To a solution of 2-chloro-5-nitropyridine (6.34 g, 40 mmol) in DMF (200 mL) were added of 4-methylphenol (5.4 g, 50 mmol, 1.25 equiv) and K2CO3 (8.28 g, 60 mmol, 1.5 equiv). The mixture was stirred overnight at room temp. The resulting mixture was treated with water (600 mL) to generate a precipitate. This mixture was stirred for 1 h, and the solids were separated and sequentially washed with a 1 N NaOH solution (25 mL), water (25 mL) and pet ether (25 mL) to give the desired product (7.05 g, 76%): mp 80-82° C.; TLC (30% EtOAc/70% pet ether) R∫0.79; 1H-NMR (DMSO-d6) δ 2.31 (s, 3H), 7.08 (d, J=8.46 Hz, 2H), 7.19 (d, J=9.20 Hz, 1H), 7.24 (d, J=8.09 Hz, 2H), 8.58 (dd, J=2.94, 8.82 Hz, 1H), 8.99 (d, J=2.95 Hz, 1H); FAB-MS m/z (rel abundance) 231 ((M+H)+), 100%).
- Step 2. 5-Amino-2-(4-methylphenoxy)pyridine Dihydrochloride: A solution 5-nitro-2-(4-methylphenoxy)pyridine (6.94 g, 30 mmol, 1 eq) and EtOH (10 mL) in EtOAc (190 mL) was purged with argon then treated with 10% Pd/C (0.60 g). The reaction mixture was then placed under a H2 atmosphere and was vigorously stirred for 2.5 h. The reaction mixture was filtered through a pad of Celite®. A solution of HCl in Et2O was added to the filtrate was added dropwise. The resulting precipitate was separated and washed with EtOAc to give the desired product (7.56 g, 92%): mp 208-210° C. (dec); TLC (50% EtOAc/50% pet ether) R∫0.42; 1H-NMR (DMSO-d6) δ 2.25 (s, 3H), 6.98 (d, J=8.45 Hz, 2H), 7.04 (d, J=8.82 Hz, 1H), 7.19 (d, J=8.09 Hz, 2H), 8.46 (dd, J=2.57, 8.46 Hz, 1H), 8.63 (d, J=2.57 Hz, 1H); EI-MS m/z (rel abundance) (M+, 100%).
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- Step 1. 4-(3-Thienylthio)-1-nitrobenzene; To a solution of 4-nitrothiophenol (80% pure; 1.2 g, 6.1 mmol), 3-bromothiophene (1.0 g, 6.1 mmol) and copper(II) oxide (0.5 g, 3.7 mmol) in anhydrous DMF (20 mL) was added KOH (0.3 g, 6.1 mmol), and the resulting mixture was heated at 130° C. with stirring for 42 h and then allowed to cool to room temp. The reaction mixture was then poured into a mixture of ice and a 6N HCl solution (200 mL) and the resulting aqueous mixture was extracted with EtOAc (3×100 mL). The combined organic layers were sequentially washed with a 1M NaOH solution (2×100 mL) and a saturated NaCl solution (2×100 mL), dried (MgSO4), and concentrated in vacuo. The residual oil was purified by MPLC (silica gel; gradient from 10% EtOAc/90% hexane to 5% EtOAc/95% hexane) to afford of the desired product (0.5 g, 34%). GC-MS m/z 237 (M+).
- Step 2. 4-(3-Thienylthio)aniline: 4-(3-Thienylthio)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B1.
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- 4-(5-Pyrimininyloxy)aniline: 4-Aminophenol (1.0 g, 9.2 mmol) was dissolved in DMF (20 mL) then 5-bromopyrimidine (1.46 g, 9.2=mmol) and K2CO3 (1.9 g, 13.7 mmol) were added. The mixture was heated to 100° C. for 18 h and at 130° C. for 48 h at which GC-MS analysis indicated some remaining starting material. The reaction mixture was cooled to room temp. and diluted with water (50 mL). The resulting solution was extracted with EtOAc (100 mL). The organic layer was washed with a saturated NaCl solution (2×50 mL), dried (MgSO4), and concentrated in vacuo. The residual solids were purified by MPLC (50% EtOAc/50% hexanes) to give the desired amine (0.650 g, 38%).
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- Step 1. 5-Bromo-2-methoxypyridine: A mixture of 2,5-dibromopyridine (5.5 g, 23.2 mmol) and NaOMe (3.76 g, 69.6 mmol) in MeOH (60 mL) was heated at 70° C. in a sealed reaction vessel for 42 h, then allowed to cool to room temp. The reaction mixture was treated with water (50 mL) and extracted with EtOAc (2×100 mL). The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure to give a pale yellow, volatile oil (4.1 g, 95% yield): TLC (10% EtOAc/90% hexane) R∫0.57.
- Step 2. 5-Hydroxy-2-methoxypyridine: To a stirred solution of 5-bromo-2-methoxypyridine (8.9 g, 47.9 mmol) in THF (175 mL) at −78° C. was added an n-butyllithium solution (2.5 M in hexane; 28.7 mL, 71.8 mmol) dropwise and the resulting mixture was allowed to stir at −78° C. for 45 min. Trimethyl borate (7.06 mL 62.2 mmol) was added via syringe and the resulting mixture was stirred for an additional 2 h. The bright orange reaction mixture was warmed to 0° C. and was treated with a mixture of a 3 N NaOH solution (25 mL, 71.77 mmol) and a hydrogen peroxide solution (30%; approx. 50 mL). The resulting yellow and slightly turbid reaction mixture was warmed to room temp. for 30 min and then heated to the reflux temp. for 1 h. The reaction mixture was then allowed to cool to room temp. The aqueous layer was neutralized with a 1N HCl solution then extracted with Et2O (2×100 mL). The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure to give a viscous yellow oil (3.5 g, 60%).
- Step 3. 4-(5-(2-Methoxy)pyridyl)oxy-1-nitrobenzene: To a stirred slurry of NaH (97%, 1.0 g, 42 mmol) in anh DMF (100 mL) was added a solution of 5-hydroxy-2-methoxypyridine (3.5 g, 28 mmol) in DMF (100 mL). The resulting mixture was allowed to stir at room temp. for 1 h, 4-fluoronitrobenzene (3 mL, 28 mmol) was added via syringe. The reaction mixture was heated to 95° C. overnight, then treated with water (25 mL) and extracted with EtOAc (2×75 mL). The organic layer was dried (MgSO4) and concentrated under reduced pressure. The residual brown oil was crystallized EtOAc/hexane) to afford yellow crystals (5.23 g, 75%).
- Step 4. 4-(5-(2-Methoxy)pyridyl)oxyaniline: 4-(5-(2-Methoxy)pyridyl)oxy-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, Step 2.
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- 3-(4-Pyridinylthio)aniline: To a solution of 3-aminothiophenol (3.8 mL, 34 mmoles) in anh DMF (90 mL) was added 4-chloropyridine hydrochloride (5.4 g, 35.6 mmoles) followed by K2CO3 (16.7 g, 121 mmoles). The reaction mixture was stirred at room temp. for 1.5 h, then diluted with EtOAc (100 mL) and water (100 mL). The aqueous layer was back-extracted with EtOAc (2×100 mL). The combined organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO4), and concentrated under reduced pressure. The residue was filtered through a pad of silica (gradient from 50% EtOAc/50% hexane to 70% EtOAc/30% hexane) and the resulting material was triturated with a Et2O/hexane solution to afford the desired product (4.6 g, 66%): TLC (100% ethyl acetate) R∫0.29; 1H-NMR (DMSO-d6) δ 5.41 (s, 2H), 6.64-6.74 (m, 3H), 7.01 (d, J=4.8, 2H), 7.14 (t, J=7.8 Hz, 1H), 8.32 (d, J=4.8, 2H).
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- 4-(2-Methyl-4-pyridinyloxy)aniline: To a solution of 4-aminophenol (3.6 g, 32.8 mmol) and 4-chloropicoline (5.0 g, 39.3 mmol) in anh DMPU (50 mL) was added potassium tert-butoxide (7.4 g, 65.6 mmol) in one portion. The reaction mixture was heated at 100° C. with stirring for 18 h, then was allowed to cool to room temp. The resulting mixture was poured into water (200 mL) and extracted with EtOAc (3×150 mL). The combined extracts. were sequentially washed with water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried (Na2SO4), and concentrated in vacuo. The resulting oil was purified by flash chromatography (50% EtOAc/50% hexane) to afford the desired product as a yellow oil (0.7 g, 9%): CI-MS m/z 201 ((M+H)+).
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- Step 1. Methyl(4-nitrophenyl)-4-pyridylamine: To a suspension of N-methyl-4-nitroaniline (2.0 g, 13.2 mmol) and K2CO3 (7.2 g, 52.2 Sol) in DMPU (30 mL) was added 4-chloropyridine hydrochloride (2.36 g, 15.77 mmol). The reaction mixture was heated at 90° C. for 20 h, then cooled to room temperature. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (100 mL). The organic layer was washed with water (100 mL), dried (Na2SO4) and concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, gradient from 80% EtOAc/20% hexanes to 100% EtOAc) to afford methyl(4-nitrophenyl)-4-pyridylamine (0.42 g)
- Step 2. Methyl(4-aminophenyl)-4-pyridylamine: Methyl(4-nitrophenyl)-4-pyridylamine was reduced in a manner analogous to that described in Method B1.
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- Step 1. 4-(4-Butoxyphenyl)thio-1-nitrobenzene: To a solution of 4-(4-nitrophenyl-thio)phenol (1.50 g, 6.07 mmol) in anh DMF (75 ml) at 0° C. was added NaH (60% in mineral oil, 0.267 g, 6.67 mmol). The brown suspension was stirred at 0° C. until gas evolution stopped (15 min), then a solution of iodobutane (1.12 g, 0.690 ml, 6.07 mmol) in anh DMF (20 mL) was added dropwise over 15 min at 0° C. The reaction was stirred at room temp. for 18 h at which time TLC indicated the presence of unreacted phenol, and additional iodobutane (56 mg, 0.035 mL, 0.303 mmol, 0.05 equiv) and NaH (13 mg, 0.334 mmol) were added. The reaction was stirred an additional 6 h room temp., then was quenched by the addition of water (400 mL). The resulting mixture was extracted with Et2O (2×500 mL). The combined organics were washed with water (2×400 mL), dried (MgSO4), and concentrated under reduced pressure to give a clear yellow oil, which was purified by silica gel chromatography (gradient from 20% EtOAc/80% hexane to 50% EtOAc/50% hexane) to give the product as a yellow solid (1.24 g, 67%); TLC (20% EtOAc/80% hexane) R∫0.75; 1H-NMR (DMSO-d6) δ 0.92 (t, J=7.5 Hz, 3H), 1.42 (app hex, J=7.5 Hz, 2H), 1.70 (m, 2H), 4.01 (t, J=6.6 Hz, 2H), 7.08 (d, J=8.7 Hz, 2H), 7.17 (d, J=9 Hz, 2H), 7.51 (d, J=8.7 Hz, 2H), 8.09 (d, J=9 Hz, 2H).
- Step 2. 4-(4-Butoxyphenyl)thioaniline; 4-(4-Butoxyphenyl)thio-1-nitrobenzene was reduced to the aniline in a manner analagous to that used in the preparation of 3-(trifluoromethyl)-4-(4-pyridinylthio)aniline (Method B3b, Step 2): TLC (33% EtOAc/77% hexane) R∫0.38.
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- 4-(4-tert-Butoxycarbamoylbenzyl)aniline: To a solution of 4,4′-methylenedianiline (3.00 g, 15.1 mmol) in anh THF (50 mL) at room temp was added a solution of di-tert-butyl dicarbonate (3.30 g, 15.1 mmol) in anh THF (10 mL). The reaction mixture was heated at the reflux temp. for 3 h, at which time TLC indicated the presence of unreacted methylenedianiline. Additional di-tert-butyl dicarbonate (0.664 g, 3.03 mmol, 0.02 equiv) was added and the reaction stirred at the reflux temp. for 16 h. The resulting mixture was diluted with Et2O (200 mL), sequentially washed with a saturated NaHCO3 solution (100 ml), water (100 mL) and a saturated NaCl solution (50 mL), dried (MgSO4), and concentrated under reduced pressure. The resulting white solid was purified by silica gel chromatography (gradient from 33% EtOAc/67% hexane to 50% EtOAc/50% hexane) to afford the desired product as a white solid (2.09 g, 46%): TLC (50% EtOAc/50% hexane) R∫0.45; 1H-NMR (DMSO-d6) δ 1.43 (s, 9H), 3.63 (s, 2H), 4.85 (br s, 2H), 6.44 (d, J=8.4 Hz, 2H), 6.80 (d, J=8.1 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 7.28 (d, J=8.1 Hz, 2H), 9.18 (br s, 1H); FAB-MS m/z 298 (M+).
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- Step 1. 3-(4-Nitrobenzyl)pyridine: A solution of 3-benzylpyridine (4.0 g, 23.6 mmol) and 70% nitric acid (30 mL) was heated overnight at 50° C. The resulting mixture was allowed to cool to room temp. then poured into ice water (350 mL). The aqueous mixture then made basic with a 1N NaOH solution, then extracted with Et2O (4×100 mL). The combined extracts were sequentially washed with water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried Na2SO4), and concentrated in vacuo. The residual oil was purified by MPLC (silica gel; 50% EtOAc/50% hexane) then recrystallization (EtOAc/hexane) to afford the desired product (1.0 g, 22%): GC-MS m/z 214 (M+).
- Step 2. 3-(4-Pyridinyl)methylaniline: 3-(4-Nitrobenzyl)pyridine was reduced to the aniline in a manner analogous to that described in Method B1
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- Step 1. 4-(1-Imidazolylmethyl)-1-nitrobenzene: To a solution of imidazole (0.5 g, 7.3 mmol) and 4-nitrobenzyl bromide (1.6 g, 7.3 mmol) in anh acetonitrile (30 mL) was added K2CO3 (1.0 g, 7.3 mmol). The resulting mixture was stirred at room temp. for 18 h and then poured into water (200 mL) and the resulting aqueous solution was extracted with EtOAc (3×50 mL). The combined organic layers were sequentially washed with water (3×50 mL) and a saturated NaCl solution (2×50 mL), dried (MgSO4), and concentrated in vacuo. The residual oil was purified by MPLC (silica gel; 25% EtOAc/75% hexane) to afford the desired product (1.0 g, 91%): EI-MS m/z 203 (M+).
- Step 2. 4-(1-Imidazolylmethyl)aniline: 4-(Imidazolylmethyl)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B2.
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- Step 1. 4-(1-Hydroxy-1-(4-pyridyl)methyl-1-nitrobenzene: To a stirred solution of 3-(4-nitrobenzyl)pyridine (6.0 g, 28 mmol) in CH2Cl2 (90 mL) was added m-CPBA (5.80 g, 33.6 mmol) at 10° C., and the mixture was stirred at room temp. overnight. The reaction mixture was successively washed with a 10% NaHSO3 solution (50 mL), a saturated K2CO3 solution (50 mL) and a saturated NaCl solution (50 mL), dried (MgSO4) and concentrated under reduced pressure. The resulting yellow solid (2.68 g) was dissolved in anh acetic anhydride (30 mL) and heated at the reflux temperature overnight. The mixture was concentrated under reduced pressure. The residue was dissolved in MeOH (25 mL) and treated with a 20% aqueous NH, solution (30 mL). The mixture was stirred at room temp. for 1 h, then was concentrated under reduced pressure. The residue was poured into a mixture of water (50 mL) and CH2Cl2 (50 mL). The organic layer was dried (MgSO4), concentrated under reduced pressure, and purified by column chromatography (80% EtOAc/20% hexane) to afford the desired product as a white solid. (0.53 g, 8%): mp 110-118° C.; TLC (80% EtOAc/20% hexane) R∫0.12; FAB-MS m/z 367 ((M+H)+, 100%).
- Step 2. 4-(1-Hydroxy-1-(4-pyridyl)methylaniline: 4-(1-Hydroxy-1-(4-pyridyl)-methyl-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, Step 2.
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- Step 1. 2-(N-methylcarbamoyl)-4-chloropyridine. (Caution: this is a highly hazardous, potentially explosive reaction.) To a solution of 4-chloropyridine (10.0 g) in N-methylformamide (250 mL) under argon at ambient temp was added conc. H2SO4 (3.55 mL) (exotherm). To this was added H2O2 (17 mL, 30% wt in H2O) followed by FeSO47H2O (0.55 g) to produce an exotherm. The reaction was stirred in the dark at ambient temp for 1 h then was heated slowly over 4 h at 45° C. When bubbling subsided, the reaction was heated at 60° C. for 16 h. The opaque brown solution was diluted with H2O (700 mL) followed by a 10% NaOH solution (250 mL). The aqueous mixture was extracted with EtOAc (3×500 mL) and the organic layers were washed separately with a saturated NaCl solution (3×150 mL. The combined organics were dried (MgSO4) and filtered through a pad of silica gel eluting with EtOAc. The solvent was removed in vacuo and the brown residue was purified by silica gel chromatography (gradient from 50% EtOAc/50% hexane to 80% EtOAc/20% hexane). The resulting yellow oil crystallized at 0° C. over 72 h to give 2-(N-methylcarbamoyl)-4-chloropyridine in yield (0.61 g, 5.3%): TLC (50% EtOAc/50% hexane) R∫0.50; MS; 1H NMR (CDCl3): d 8.44 (d, 1H, J=5.1 Hz, CHN), 8.21 (s, 1H, CHCCO), 7.96 (b s, 1H, NH), 7.43 (dd, 1H, J=2.4, 5.4 Hz, ClCHCN), 3.04 (d, 3H, J=5.1 Hz, methyl); CI-MS m/z 171 ((M+H)+).
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- Step 1. 4-(4-Methylsulfonylphenoxy)-1-nitrobenzene: To a solution of 4-(4-methylthiophenoxy)-1-ntirobenzene (2 g, 7.66 mmol) in CH2Cl2 (75 mL) at 0° C. was slowly added MCPBA (57-86%, 4 g), and the reaction mixture was stirred at room temperature for 5 h. The reaction mixture was treated with a 1 N NaOH solution (25 mL). The organic layer was sequentially washed with a 1N NaOH solution (25 mL), water (25 mL) and a saturated NaCl solution (25 mL), dried (MgSO4), and concentrated under reduced pressure to give 4-(4-methylsulfonylphenoxy)-1-nitrobenzene as a solid (2.1 g).
- Step 2. 4-(4-Methylsulfonylphenoxy)-1-aniline: 4-(4-Methylsulfonylphenoxy)-1-nitrobenzene was reduced to the aniline in a manner analogous to that described in Method B3d, step 2.
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- Step 1. 4-(3-Methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene: To a solution of -(3-carboxy-4-hydroxyphenoxy)-1-nitrobenzene (prepared in a manner analogous to that described in Method B3a, step 1, 12 mmol) in acetone (50 mL) was added K2CO3 (5 g) and dimethyl sulfate (3.5 mL). The resulting mixture was heated at the reflux temperature overnight, then cooled to room temperature and filtered through a pad of Celite®. The resulting solution was concentrated under reduced pressure, absorbed onto silica gel, and purified by column chromatography (50% EtOAc/50% hexane) to give 4-(3-methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene as a yellow powder (3 g): mp 115 118° C.
- Step 2. 4-(3-Carboxy-4-methoxyphenoxy)-1-nitrobenzene: A mixture of 4-(3-methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene (1.2 g), KOH (0.33 g), and water (5 mL) in MeOH (45 mL) was stirred at room temperature overnight and then heated at the reflux temperature for 4 h. The resulting mixture was cooled to room temperature and concentrated under reduced pressure. The residue was dissolved in water (50 mL), and the aqueous mixture was made acidic with a 1N HCl solution. The resulting mixture was extracted with EtOAc (50 mL). The organic layer was dried (MgSO4) and concentrated under reduced pressure to give 4-(3-carboxy-4-methoxyphenoxy)-1-nitrobenzene (1.04 g).
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- N-(5-tert-Butyl-2-(3-tetrahydrofuranyloxy)phenyl)-N′-(4 methylphenyl)urea: To a solution of 5-tert-butyl-2-(3-tetrahydrofuranyloxy)aniline (0.078 g, 0.33 mmol) in toluene (2.0 mL) was added p-tolyl isocyanate (0.048 g, 0.36 mmol) and the resulting mixture was allowed to stir at room temp. for 8 h to produce a precipitate. The reaction mixture was filtered and the residue was sequentially washed with toluene and hexanes to give the desired urea as a white solid (0.091 g, 75%); mp 229-231° C.; 1H-NMR (DMSO-d6) δ 1.30 (s, 9H), 1.99-2.03 (m, 1H), 2.19-2.23 (m, 4H), 3.69-3.76 (m, 1H), 3.86-3.93 (m, 3H), 4.98-5.01 (m, 1H), 6.81-6.90 (m, 2H), 7.06 (d, J=8.09 Hz, 2H, 7.32 (d, J=8.09 Hz, 2H), 7.84 (s, 1H), 8.22 (d, J=2.21 Hz, 1H), 9.26 (s, 1H).
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- N-(2-Methoxy-5-(trifluoromethanesulfonyl)phenyl)-N′(4-methylphenyl)urea: p-Tolyl isocyanate (0.19 mL, 1.55 mmol) was added to a solution of 2-methoxy-5-(trifluoromethanesulfonyl)aniline (0.330 g, 1.29 mmol) in EtOAc (5 mL), and the reaction mixture was stirred at room temp. for 18 h. The resulting precipitate was collected by filtration and washed with Et2O to give a white solid (0.28 g). This material was then purified by HPLC (C-18 column, 50% CH3CN/50% H2O) and the resulting solids were triturated with Et2O to provide the title compound (0.198 g): 1H-NMR (CDCl3) δ 7.08 (d, J=8.5 Hz, 2H), 7.33 (d, J=8.5 Hz, 2H), 7.40 (d, J=8.8 Hz, 1H), 7.71 (dd, J=2.6, 8.8 Hz, 1H), 8.66 (s, 1H), 8.90 (d, J=2.6 Hz, 1H), 9.36 (s, 1H); FAB-MS m/z 389 ((M+1)+).
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- N-(2-Methoxy-5-(difluoromethanesulfonyl)phenyl)-N′-(4-methylphenyl)urea: p-Tolyl isocyanate (0.058 mL, 0.46 mmol) was added to a solution of 2-methoxy-5-(difluoromethanesulfonyl)aniline (0.100 g, 0.42 mmol) in EtOAc (0.5 mL) and the resulting mixture was stirred at room temp. for 3 d. The resulting precipitate was filtered and washed with Et2O to provide the title compound as a white solid (0.092 g): 1H-NMR (CDCl3) δ 2.22 (s, 3H) 4.01 (s, 3H), 7.02-7.36 (m, 6H), 7.54 (dd, J=2.4, 8.6 Hz, 1H), 8.57 (s, 1H), 8.79 (d, J=2.6 Hz, 1H), 9.33 (s, 1H); EI-MS m/z 370 (M+).
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- N-(2,4-Dimethoxy-5-(trifluoromethyl)phenyl)-N′-(4-methylphenyl)urea: p-Tolyl isocyanate (0.16 mL, 1.24 mmol) was added to a solution of 2,4-dimethoxy-5-(trifluoromethyl)aniline (0.25 g, 1.13 mmol) in EtOAc (3 mL) and the resulting mixture was stirred at room temp. for 18 h. A resulting precipitate was washed with Et2O to give the title compound as a white solid (0.36 g): 1H-NMR (CDCl3) δ 2.21 (s, 3H). 3.97 (s, 3H), 3.86 (s, 3H), 6.88 (s, 1H), 7.05 (d, J=8.5 Hz, 2H), 7.29 (d, J=8.5 Hz, 2H), 8.13 (s, 1H), 8.33 (s, 1H), 9.09 (s, 1H); FAB-MS m/z 355 ((M+1)+).
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- N-(3-Methoxy-2-naphthyl)-N′-(1-naphthyl)urea: To a solution of 2-amino-3-methoxynaphthalene (0.253 g, 1.50 mmol) in CH2Cl2 (3 mL) at room temp. was added a solution of 1-naphthyl isocyanate (0.247 g, 1.50 mmol) in CH2Cl2 (2 mL) and the resulting mixture was allowed to stir overnight. The resulting precipitate was separated and washed with CH2Cl2 to give the desired urea as a white powder (0.450 g, 90%): mp 235-236° C.; 1H-NMR (DMSO-d6) δ 4.04 (s, 3H), 7.28-7.32 (m, 2H), 7.38 (s, H1), 7.44-7.72 (m, 6H), 7.90-7.93 (m, 1H), 8.05-8.08 (m, 1H), 8.21-8.24 (m, 1H), 8.64 (s, 1H), 9.03 (s, 1H), 9.44 (s, 1H); FAB-MS m/z 343 ((M+H)+).
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- N-(5-tert-Butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)phenyl)-N′-(4-methylphenyl)urea: A mixture of 5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)aniline (Method A10, 0.232 g, 0.75 mmol) and p-tolyl isocyanate (0.099 mL, 0.79 mmol) in EtOAc (1 mL) was stirred at room temp. for 3 d to produce a solid, which was separated. The filtrate was purified by column chromatography (100% CHCl2) and the residue was triturated (Et2O/hexane) to give the desired product (0.262 g, 79%): mp 155-156° C.; TLC (20% EtOAc/80% hexane) R∫0.49; 1H-NMR (DMSO-d6) δ 1.22 (s, 9H), 1.37 (s, 9H), 2.21 (s, 3H), 4.22-4.23 (m, 2H), 4.33-4.35 (m, 2H), 6.89-7.00 (m, 4H), 7.06 (d, J=8.5 Hz, 2H), 7.32 (d, J=8.1 Hz, 2H), 7.96 (s, 1H); 8.22 (d, J=1.5 Hz, 1H), 9.22 (s, 1H); FAB-MS m/z (rel abundance) 443 ((M+H)+, 6%).
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- N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(3-(4-pyridinylthio phenyl urea: To a solution of pyridine (0.61 mL, 7.5 mmol, 3.0 equiv) and phosgene (20% in toluene; 2.65 mL, 5.0 mmol, 2.0 equiv) in CH2Cl2 (20 mL) was added 2-methoxy-5-(trifluoromethyl)aniline (0.48 g, 2.5 mmol) at 0° C. The resulting mixture was allowed warm to room temp. stirred for 3 h, then treated with anh. toluene (100 mL) and concentrated under reduced pressure. The residue was suspended in a mixture of CH2Cl2 (10 mL) and anh. pyridine (10 mL) and treated with 3-(4-pyridinylthio)aniline (0.61 g, 2.5 mmol, 1.0 equiv). The mixture was stirred overnight at room temp., then poured into water (50 mL) and extracted with CH2Cl2 (3×25 mL). The combined organic layers were dried (MgSO4) and concentrated under reduced pressure. The residue was dissolved in a minimal amount of CH2Cl2 and treated with pet. ether to give the desired product as a white precipitate (0.74 g, 70%): mp 202° C.; TLC (5% acetone/95% CH2Cl2) R∫0.09; 1H-NMR (DMSO-d6) δ 7.06 (d, J=5.5 Hz, 2H), 7.18 (dd, J=2.4, 4.6 Hz, 2H), 7.31 (dd, J=2.2, 9.2 Hz, 1H), 7.44 (d, J=5.7 Hz, 1H), 7.45 (s, 1H), 7.79 (d, J=2.2 Hz, 1H), 8.37 (s, 2H), 8.50 (dd, J=2.2, 9.2 Hz, 2H), 9.63 (s, 1H), 9.84 (s, 1H); FAB-MS m/z 420 ((M+H)+, 70%).
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- N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(4-pyridinylthio)phenyl)urea: To a solution of pyridine (0.61 mL, 7.5 mmol, 3.0 equiv) and phosgene (20% in toluene; 2.65 mL, 5.0 mmol, 2.0 equiv) in CH2Cl2 (20 mL) was added 4-(4-pyridinylthio)aniline (0.506 g, 2.5 mmol) at 0° C. After stirring for 3 h at room temp., the mixture was treated with anh. toluene (100 mL) then concentrated under reduced pressure. The residue was suspended in a mixture of CH2Cl2 (10 mL) and anh. pyridine (10 mL) and treated with 2-methoxy-5-(trifluoromethyl)aniline (0.50 g, 2.5 mmol, 1.0 equiv). After stirring the mixture overnight at room temp., it was poured into a 1 N NaOH solution (50 mL) and extracted with CH2Cl2 (3×25 mL). The combined organic layers were dried (MgSO4) and concentrated under reduced pressure to give the desired urea (0.74 g, 71%): mp 215° C.; TLC (5% acetone/95% CH2Cl2) R∫0.08; 1H-NMR (DMSO-d6) δ 3.96 (s, 3H), 6.94 (dd, J=1.1, 4.8 Hz, 2H) 7.19 (d, J=8.4 Hz, 1H), 7.32 (dd, J=2.2, 9.3 Hz, 1H), 7.50 (d, J=8.8 Hz, 2H), 7.62 (d, J=8.8 Hz, 2H), 8.32 (d, J=5.1 Hz, 2H), 8.53 (d, J=0.7 Hz, 1H), 8.58 (s, 1H), 9.70 (s, 1H); FAB-MS m/z 420 ((M+H)+).
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- Step 1. 5-(Difluoromethanesulfonyl)-2-methoxyphenyl isocyanate: To a solution of phosgene (1.95 M in toluene; 3.0 mL, 5.9 mmol) in CH2Cl2 (40 mL) at 0° C. was added a solution of 5-(difluoromethanesulfonyl)-2-methoxyaniline (0.70 g, 2.95 mmol) and pyridine (0.44 mL, 8.85 mmol) in CH2Cl2 (10 mL) dropwise. After being stirred at 0° C. for 30 min and at room tempt for 3 h, the reaction mixture was concentrated under reduced pressure, then treated with toluene (50 mL). The resulting mixture was concentrated under reduced pressure, then was treated with Et2O (50 mL) to produce a precipitate (pyridinium hydrochloride). The resulting filtrate was concentrated under reduced pressure to provide the title compound as a white solid (0.33 g). This material was used in the next step without further purification.
- Step 2. N-(2-Methoxy-5-(difluoromethanesulfonyl)phenyl)-N′-(2-fluoro-4-methylphenyl)urea: 2-Fluoro-4-methylaniline (0.022 mL, 0.19 mmol) was added to a solution of 5-(difluoromethanesulfonyl)-2-methoxyphenyl isocyanate (0.046 g, 0.17 mmol) in EtOAc (1 mL). The reaction mixture was stirred at room temp. for 3 d. The resulting precipitate was washed with Et2O to provide the title compound as a white solid (0.055 g): 1H-NMR (CDCl3) δ 2.24 (s, 3H), 4.01 (s, 3H), 6.93 (d, J=8.5 Hz, 3H), 7.01-7.36 (m, 3H), 7.56 (dd, J=2.4, 8.6 Hz, 1H), 7.98 (app t, J=8.6 Hz, 1H), 8.79 (d, J=2.2 Hz, 1H), 9.07 (s, 1H), 9.26 (s, 1H); FAB-MS m/z 389 ((M+1)+).
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- Step 1. 2-Methoxy-5-trifluoromethylphenyl Isocyanate: To a solution of phosgene (1.93 M in toluene; 16 mL, 31.4 mmol) in CH2Cl2 (120 mL) at 0° C. was added a solution of 2-methoxy-5-(trifluoromethyl)aniline (3.0 g, 15.7 mmol) and pyridine (2.3 mL, 47.1 mmol) in CH2Cl2 (30 mL) dropwise. The resulting mixture was stirred at 0 t C for 30 min and at room temp for 3 h, then concentrated under reduced pressure. The residue was diluted with toluene (30 mL), concentrated under reduced pressure, and treated with Et2O. The resulting precipitate (pyridinium hydrochloride) was removed and the filtrate, was concentrated under reduced pressure to give the title compound as a yellow oil (3.0 g) which crystallized upon standing at room temp. for a few days.
- Step 2. N-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-fluorophenyl)urea: 4-Fluoroaniline (0.24 mL, 2.53 mmol) was added to a solution of 2-methoxy-5-(trifluoromethyl)phenyl isocyanate (0.50 g, 2.30 mmol) in EtOAc (6 mL) and the reaction mixture was stirred at room temp. for 3 d. The resulting precipitate was washed with Et2O to give the title compound as a white solid (0.60 g): NMR: 3.94 (s, 3H). 7.13-7.18 (m, 3H), 7.30 (dd, J=1.5, 8.4 Hz, 1H), 7.44 (m, 2H), 8.45 (s, 1H), 8.52 (d, J=2.2 Hz, 1H), 9.42 (s, 1H); FAB-MS m/z 329 ((M+1)+).
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- N-(3-Methoxy-2-naphthyl)-N′-(4-methylphenyl)urea: To a solution of 3-methoxy-2-naphthoic acid (Method A6, Step 2; 0.762 g, 3.80 mmol) and Et3N (0.588 mL, 4.2 mmol) in anh toluene (20 mL) at room temp. was added a solution of diphenylphosphoryl azide (1.16 g, 4.2 mmol) in toluene (5 mL). The resulting mixture was heated to 80° C. for 2 h, cooled to room temp., and p-toluidine (0.455 g, 4.1 mmol) was added. The mixture was heated at 80° C. overnight, cooled to room temp., quenched with a 10% citric acid solution, and extracted with EtOAc (2×25 mL). The combined organic layers were washed with a saturated NaCl solution (25 mL), dried (MgSO4), and concentrated in vacuo. The residue was triturated with CH2Cl2 to give the desired urea as white powder (0.700 g, 61%): mp 171-172° C.; 1H-NMR (DMSO-d6) δ 2.22 (s, 3H), 3.99 (s, 3H), 7.07 (d, J=8.49 Hz, 2H), 7.27-7.36 (m, 5H), 7.67-7.72 (m, 2H), 8.43 (s, 1H), 8.57 (s, 1H), 9.33 (s, 1H); FAB-MS m/z 307 ((M+H)+).
-
- N-(5-Chloro-2-hydroxy-4-nitrophenyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea: A solution of 4-(4-pyridinylmethyl)aniline (0.300 g, 1.63 mmol) and N,N′-carbonyldiimidazole (0.268 g, 1.65 mmol) in CH2Cl2 (10 mL) was stirred at room temp. for 1 h at which time TLC analysis indicated no starting aniline. The reaction mixture was then treated with 2-amino-4-chloro-5-nitrophenol (0.318 g, 1.65 mmol) and stirred at 40-45° C. for 48 h. The resulting mixture was cooled to room temp. and diluted with EtOAc (25 mL). The resulting precipitate was separated to give the desired product (0.416 g, 64%): TLC (50% acetone/50% CH2Cl2) R∫0.40; 1H-NMR (DMSO-d6) δ 3.90 (s, 2H), 7.18 (d, J=8.4 Hz, 2H), 7.21 (d, J=6 Hz, 2H), 7.38 (d, J=8.4 Hz, 2H), 7.54 (s, 1H), 8.43-8.45 (m, 3H), 8.78 (s, 1H), 9.56 (s, 1H), 11.8 (br s, 1H); FAB-MS m/z (rel abundance) 399 ((M+H)+, 10%).
-
- Bis(4-chloro-3-(trifluoromethyl)phenyl)urea: To a solution of 5-amino-3-tert-butylisoxazole (0.100 g) in anh toluene (5 mL) was added 4-chloro-3-(trifluoromethyl)phenyl isocyanate (0.395 g). The reaction vessel was sealed, heated at 85° C. for 24 h, and cooled to room temp. The reaction mixture was added to a slurry of Dowex® 50WX2-100 resin (0.5 g) in CH2Cl2 (40 mL), and the resulting mixture was stirred vigorously for 72 h. The mixture was filtered and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography (gradient form 100% CH2Cl2 to 5% MeOH/95% CH2Cl2) to give bis(4-chloro-3-(trifluoromethyl)phenyl)urea followed by N-(3-tert-butyl-5-isoxazolyl)-N′-(4-chloro-3-(trifluoromethyl)phenyl)urea. The residue from the symmetrical urea fractions was triturated (Et2O/hexane) to give the urea as a white solid (0.110 g): TLC (3% MeOH/97% CH2Cl2) R∫0.55; FAB-MS m/z 417 ((M+H)+).
-
- Step 1. N-(2-Hydroxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea: p-Tolyl isocyanate (0.066 mL, 0.52 mmol) was added to a solution of 2-hydroxy-5-(trifluoromethylthio)aniline (0.100 g, 0.48 mmol) in EtOAc (2 mL) and the reaction mixture was stirred at room temp. for 2 d. The resulting precipitate was washed with EtOAc to provide the title compound (0.13 g): 1H-NMR (CDCl3) δ 2.24 (s, 3H). 7.44-7.03 (m, 6H), 8.46 (s, 1H), 8.60 (d, J=1.8 Hz, 1H), 9.16 (s, 1H), 10.41 (s, 1H); FAB-MS m/z 343 ((M+1)+). This material was used in the next step without purification.
- Step 2. N-(2-Methoxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea: A solution of N-(2-hydroxy-5-(trifluoromethylthio)phenyl)-N′-(4-methylphenyl)urea (0.125 g, 0.36 mmol), iodomethane (0.045 mL, 0.73 mmol), and K2CO (100 mg, 0.73 mmol) in acetone (2 mL) was heated at the reflux temp. for 6 h, then was cooled to room temp. and concentrated under reduced pressure. The residue was dissolved in a minimal amount of MeOH, absorbed onto silica gel, and then purified by flash chromatography (3% Et2O/97% CH2Cl2) to provide the title compound as a white solid (68 mg): 1H-NMR (CDCl3) δ 2.22 (s, 3H), 3.92 (s, 3H), 7.05-7.32 (m, 6H), 8.37 (s, 1H), 8.52 (d, J=2.2 Hz, 1H), 9.27 (s, 1H); FAB-MS m/z 357 ((M+1)+).
-
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(2-amino-4-methylphenyl)urea: A solution of N-(5-tert-butyl-2-methoxyphenyl)-N′-(2-nitro-4-methylphenyl)urea (prepared in a manner analogous to Method B1a; 4.0 g, 11.2 mmol) in EtOH (100 mL) was added to a slur of 10% Pd/C (0.40 g) in EtOH (10 mL), and the resulting mixture was stirred under an atmosphere of H2 (balloon) at room temp. for 18 h. The mixture was filtered through a pad of Celite® and concentrated in vacuo to afford the desired product (3.42 g, 94%) as a powder: mp 165-166° C.; 1H-NMR (DMSO-d6) δ 1.30 (s, 9H), 2.26 (s, 3H), 3.50 (br s, 2H), 3.71 (s, 3H), 6.39 (br s, 1H), 6.62 (s, 1H), 6.73 (d, J=8.46 Hz, 1H), 6.99 (dd, J=2.21, 8.46 Hz, 1H), 7.05 (d, J=8.46 Hz, 1H), 7.29 (s, 1H), 8.22 (d, J=2.57 Hz, 1H; FAB-MS m/z 328 ((M+H)+).
-
- N-(5-tert-Butyl-2-methoxyphenyl)-N′-(1-naphthyl)thiourea: To a solution of 5-tert-butyl-2-methoxyaniline (0.372 g, 2.07 mmol) in toluene (5 mL) was added 1-naphthyl thioisocyanate (0.384 g, 2.07 mmol) and the resulting mixture was allowed to stir at room temp. for 8 h to produce a precipitate. The solids were separated and sequentially washed with toluene and hexane to give the desired product as an off-white powder (0.364 g, 48%): mp 158-160° C.; 1H-NMR (DMSO-d6) δ 1.31 (s, 91), 3.59 (s, 3H), 6.74 (d, J=8.46 Hz, 1H), 7.13 (dd, J=2.21, 8.46 Hz, 1H), 7.53-7.62 (m, 4H), 7.88-7.95 (m, 4H), 8.06-8.08 (m, 1H), 8.09 (br s, 1H); FAB-MS m/z 365 ((M+H)+).
-
- N-(5-tert-Butyl-2-(2-hydroxyethoxy)phenyl)-N′-(4-methylphenyl)urea: A solution of N-(5-tert-butyl-2-(2-tert-butoxycarbonyloxy)ethoxy)phenyl)-N′-(4-methylphenyl)urea (Method B1f 0.237 g, 0.54 mmol) and TFA (0.21 mL, 2.7 mmol) in CH2Cl2 (2 mL) was stirred at room temp for 18 h, then was washed with a saturated NaHCO3 solution (2 mL). The organic layer was dried by passing through 1PS filter paper (Whatman®) and concentrated under reduced pressure. The resulting white foam was triturated (Et2O/hexane), then recrystallized (Et2O) to give the desired product (3.7 mg): TLC (50% EtOAc/50% hexane) R∫0.62; 1H-NMR (DMSO-d6) δ 1.22 (s, 9H), 3.75-3.76 (m, 2H), 4.00-4.03 (m, 2H), 4.80 (t, J=5.0 Hz, 1H), 6.88-6.89 (m, 4H), 7.06 (d, J=8.5 Hz, 2H), 7.33 (d, J=8.1 Hz, 2H), 7.97 (s, 1H), 8.20 br s, 1H), 9.14 (s, 1H); FAB-MS m/z (rel abundance) 343 ((M+H)+, 100%).
- The following compounds have been synthesized according to the General Methods listed above:
-
TABLE 1 2-Substituted-5-tert-butylphenyl Ureas mp TLC Solvent Mass Synth. Example R1 R2 (° C.) Rf System Spec. Source Method 1 OH 0.54 2%MeOH/98%CH2Cl2 299(M + H)+ FAB B1d 2 OMe 199-200 313(M + H)+ FAB B1d 3 OMe 208-209 390(M+) EI B1d 4 OMe 192-194 389(M + H)+ FAB B1d 5 OMe 0.58 50%EtOAc/50%hexane 347(M + H)+ FAB B3b 6 OMe 0.62 50%EtOAc/50%hexane 351(M + H)+ FAB B3b 7 OMe 0.71 50%EtOAc/50%hexane 331(M + H)+ FAB B1d 8 OMe 0.74 50%EtOAc/50%hexane 331(M + H)+ FAB B3b 9 OMe 0.66 20%EtOAc/80%hexane 327(M + H)+ FAB B1d 10 OMe 0.62 20%EtOAc/80%hexane 331(M + H)+ FAB B1d 11 OMe 0.42 13%EtOAc/87%hexane 335(M + H)+ FAB B1d 12 OMe 0.52 2%MeOH/98%CH2Cl2 327(M + H)+ FAB B1d 13 OMe 0.56 2%MeOH/98%CH2Cl2 335(M + H)+ FAB B1d 14 OMe 0.48 2%MeOH/98%CH2Cl2 351(M + H)+ FAB B1d 15 OMe 0.50 2%MeOH/98%CH2Cl2 347(M + H)+ FAB B1d 16 OMe 201-202 390(M + H)+ FAB B2a 17 OMe 199-200 390(M + H)+ FAB B2a 18 OMe 198-199 0.45 25%EtOAc/75%hexane B1a 19 OMe 181-182 389(M + H)+ CI B2a 20 OMe 181-183 390(M+) EI B1a 21 OMe 175-177 358(M + H)+ FAB B1a 22 OMe 219-220 358(M + H)+ FAB B1a 23 OMe 165-166 328(M + H)+ FAB C2 24 OMe 102-104 271(M + H)+ FAB C2 25 OMe 236-238 349(M + H)+ FAB B1a 26 OMe 192-194 367(M + H)+ FAB B1a 27 OMe 137-140 550(M + H)+ FAB B2a 28 OMe 197-199 434(M + H)+ CI A8, B2a 29 OMe 212-215 416(M + H)+ FAB B2a 30 OMe 195 405(M + H)+ FAB B1a 31 OMe 110 0.07 5%acetone/95%CH2Cl2 408(M + H)+ FAB B2b 32 OMe 185 0.67 5%acetone/95%CH2Cl2 425(M + H)+ FAB B2a 33 OMe 214-215 0.54 5%acetone/95%CH2Cl2 448(M + H)+ FAB B2a 34 OMe 180 0.56 5%acetone/95%CH2Cl2 421(M + H)+ FAB B2a 35 0.67 50%EtOAc/50%hexane 343(M + H)+ FAB A10, B1f,C4 36 0.45 50%EtOAc/50%hexane 340(M + H)+ FAB B1d 37 222-223 354(M + H)+ ES B1c 38 203-205 366(M + H)+ FAB B1d 39 230-232 367(M + H)+ FAB B1d 40 197-198 406(M + H)+ FAB A9, B1a 41 204-205 392(M + H)+ FAB A9, B1a 42 217-218 424(M + H)+ FAB A9, B1a 43 187-188 370(M + H)+ FAB A9, B1a 44 118-120 462(M + H)+ FAB A9, B1a 45 146-148 448(M + H)+ FAB A9, B1a 46 110-113 480(M + H)+ FAB A9, B1a 47 95-100 400(M + H)+ FAB A9, B1a 48 107-110 398(M + H)+ FAB A9, B1a 49 180-182 472(M + H)+ FAB A9, B1a 50 217-219 388(M + H)+ FAB A9, B1a 51 116-120 420(M + H)+ FAB A9, B1a 52 100-105 406(M + H)+ FAB A9, B1a 53 103-105 438(M + H)+ FAB A9, B1a 54 118-120 384(M + H)+ FAB A9, B1a 55 125-128 394(M + H)+ FAB A1, B1a 56 227-230 468(M + H)+ FAB A1, B1a 57 154-156 434(M + H)+ FAB A1, B1a 58 169-171 373(M + H)+ FAB A2, B1a 59 157-159 423(M + H)+ FAB A2, B1a 60 229-231 369(M + H)+ FAB A2, B1a 61 200-204 468(M + H)+ FAB B2a 62 187-188 508(M + H)+ FAB B2a 63 204-206 413(M + H)+ FAB B1a 64 192-194 389(M + H)+ FAB A7, B1a 65 183-185 425(M + H)+ FAB A7, B1a 66 159-160 443(M + H)+ FAB A7, B1a 67 179-180 411(M + H)+ FAB A7, B1a 68 0.06 10%EtOAc/90%hexane 408(M + H)+ FAB A7, B1a 69 227-229 377(M + H)+ FAB A7, B1a 70 216-217 381(M + H)+ FAB A7, B1a 71 213-214 431(M + H)+ FAB A7, R1a 72 200-201 399(M + H)+ FAB A7, B1a 73 134-136 443(M+) EI A7, B1a 74 185-186 459(M + H)+ FAB A7, B1a 75 207-208 419(M + H)+ FAB A7, B1a -
TABLE 2 2-Substituted-5-(trifluoromethyl)phenyl Ureas mp TLC Solvent Mass Synth. Example R1 R2 (° C.) Rf System Spec. Source Method 76 OMe 185-186 325(M + H)+ FAB B1d 77 OMe 0.22 20%EtOAc/80%hexane 329(M + H)+ FAB B3b 78 OMe 0.49 20%EtOAc/80%hexane 343(M + H)+ FAB B3b 79 OMe 0.32 20%EtOAc/80%hexane 343(M + H)+ FAB B3b 80 OMe 0.37 20%EtOAc/80%hexane 359(M + H)+ FAB B3b 81 OMe 0.44 20%EtOAc/80%hexane 363(M + H)+ FAB B3b 82 OMe 0.68 50%EtOAc/50%hexane 339(M + H)+ FAB B1d 83 OMe 0.68 50%EtOAc/50%hexane 343(M + H)+ FAB B1d 84 OMe 0.60 50%EtOAc/50%hexane 347(M + H)+ FAB B1d 85 OMe 0.53 2%MeOH/98%CH2Cl2 339(M + H)+ FAB B1d 86 OMe 0.29 2%MeOH/98%CH2Cl2 347(M + H)+ FAB B1d 87 OMe 0.27 2%MeOH/98%CH2Cl2 363(M + H)+ FAB B1d 88 OMe 0.45 2%MeOH/98%CH2Cl2 359(M + H)+ FAB B1d 89 OMe 184-185 401(M + H)+ FAB B2a 90 OMe 176-178 402(M +) FAB B21 91 OMe 231-233 361(M + H)+ FAB B1a 92 OMe 192-194 379(M + H)+ FAB B1a 93 OMe 198 417(M + H)+ FAB B1e 94 OMe 206 0.58 5%acetone/95%CH2Cl2 437(M + H)+ FAB B2a 95 OMe 98-99 0.50 5%acetone/95%CH2Cl2 B2a 96 OMe 190 0.65 5%acetone/95%CH2Cl2 B2a 97 OMe 194 0.76 5%acetone/95%CH2Cl2 464(M + H)+ FAB B2a 98 OMe 210-211 0.07 5%acetone/95%CH2Cl2 402(M + H)+ FAB B2a 99 OMe 202 0.09 5%acetone/95%CH2Cl2 420(M + H)+ FAB B2a 100 OMe 215 0.08 5%acetone/95%CH2Cl2 420(M + H)+ FAB B2a 101 OMe 206 0.05 5%acetone/95%CH2Cl2 404(M + H)+ FAB B2a 102 OMe 0.78 5%acetone/95%CH2Cl2 471(M + H)+ FAB B1a 103 OMe 471(M + H)+ FAB B1a 104 OMe 487(M + H)+ FAB B1a 105 0.65 20%EtOAc/80%hexane 352(M + H)+ FAB B1d 106 159-160 0.33 25%EtOAc/75%hexane 353(M + H)+ FAB A5, B1a 107 152-153 0.35 25%EtOAc/75%hexane 339(M + H)+ FAB A5, B1a 108 SMe 246-247 0.30 25%EtOAc/75%hexane 377(M + H)+ FAB B1a 109 SMe 210-211 0.35 25%EtOAc/75%hexane 345(M + H)+ CI B1a 110 SMe 195-196 0.35 25%EtOAc/75%hexane 314(M + H)+ FAB B1a 111 SMe 196-197 0.40 25%EtOAc/75%hexane 395(M + H)+ FAB B1a -
TABLE 3 S-Substituted 2-Methoxy-5-sulfonylphenyl Ureas mp TLC Solvent Mass Synth. Example R2 R3 (° C.) Rf System Spec. Source Method 112 F 205-207 339(M + H)+ HPLCES-MS B1d 113 CHF2 195-196 370(M+) EI B1d 114 CHF2 0.46 50%EtOAc/50%hexane 389(M + H)+ FAB B3a 115 CHF2 0.21 50%EtOAc/50%hexane 405(M + H)+ FAB B3a 116 CHF2 0.23 20%EtOAc/80%hexane 409(M + H)+ FAB B3a 117 CHF2 0.40 50%EtOAc/50%hexane 389(M + H)+ FAB B3a 118 CHF2 0.53 50%EtOAc/50%hexane 375(M + H)+ FAB B3a 119 CHF2 0.58 50%EtOAc/50%hexane 389(M + H)+ FAB R1c 120 CHF2 0.48 50%EtOAc/50%hexane 389(M + H)+ FAB B1d 121 CHF2 0.44 50%EtOAc/50%hexane 393(M + H)+ FAB B1c 122 CHF2 0.33 5%MeOH/95%CH2Cl2 385(M + H)+ FAB B1c 123 CHF2 393(M + H)+ FAB B1c 124 CHF2 409(M + H)+ FAB B1c 125 CHF2 405(M + H)+ FAB B1c 126 CHF2 0.56 50%EtOAc/50%hexane 385(M + H)+ FAB B1c 127 CF3 0.56 50%EtOAc/50%hexane 389(M + H)+ FAB A3, B1d -
TABLE 4 3-Substituted-2-naphthyl Ureas mp TLC Solvent Mass Synth. Example R1 R2 (° C.) Rf System Spec. Source Method 128 OMe 171-172 0.40 25%EtOAc/75%hexane 307(M + H)+ FAB B4 129 OMe 197-199 0.40 14%EtOAc/86%hexane 325(M + H)+ FAB B4 130 OMe 235-236 0.45 25%EtOAc/75%hexane 343(M + H)+ FAB A6, B1a 131 OMe 236-237 0.45 25%EtOAc/75%hexane 311(M + H)+ FAB A6, B1a 132 OMe 209-211 311(M + H)+ FAB A6, B1a 133 OMe 225-226 321(M + H)+ FAB A6, B1a 134 OMe 199-200 395(M + H)+ FAB A6, B1a 135 OMe 227-228 361(M + H)+ FAB A6, B1a 136 OMe 207-208 327(M + H)+ FAB A6, B1a 137 OMe 234-235 361(M + H)+ FAB A6, B1a 138 OMe 228-229 352(M + H)+ FAB A6, B1a 139 OMe 190-195 323(M + H)+ FAB A6, B1a 140 OMe 203-205 310(M + H)+ FAB A6, B1a 141 OMe 209-210 307(M + H)+ FAB A6, B1a 142 OMe 200-201 323(M + H)+ FAB A6, B1a 143 OMe 201-202 307(M + H)+ FAB A6, B1a 144 OMe 216-218 385(M + H)+ FAB A6, B1a 145 OMe 181-182 361(M + H)+ FAB A6, B1a 146 OMe 238-239 0.25 25%EtOAc/75%hexane 402(M + H)+ FAB B4 147 OMe 199-200 0.20 25%EtOAc/75%hexane 384(M + H)+ FAB B4 148 OMe 175-176 321(M + H)+ FAB A6, B1a 149 OMe 164-166 544(M + H)+ FAB A6, B1a 150 OMe 206-209 446(M + H)+ FAB A6, B1a 151 OMe 234-237 410(M + H)+ FAB B2a 152 OMe 209-211 0.40 25%EtOAc/75%hexane 414(M+) EI B4 -
TABLE 5 Misc. Ureas mp TLC Solvent Mass Synth. Example R2 (° C.) Rf System Spec. Source Method 153 183-184 327(M + H)+ FAB B1d 154 156-157 312(M+) EI B1d 155 0.46 50%EtOAc/50%hexane 291(M + H)+ FAB B1d 156 157 0.40 50%acetone/50%CH2Cl2 399(M + H)+ FAB B5 158 219-221 336(M + H)+ FAB B1d 159 204-205 305(M + H)+ FAB B1d 160 208-210 302(M + H)+ FAB B1d 161 226-228 355(M + H)+ FAB B1d 162 160-162 328(M + H)+ FAB B1a 163 0.85 50%EtOAc/50%hexane 291(M + H)+ FAB B1b 164 225-226 0.60 25%EtOAc/75%hexane 367(M + H)+ FAB A4, B1a 165 0.55 3%MeOH/97%CH2Cl2 417(M + H)+ FAB B6 166 169-171 407(M + H)+ FAB B1a 167 158-160 C3 365(M + H)+ FAB C3 - The in vitro inhibitory properties of compounds were determined using a p38 kinase inhibition assay. P38 activity was detected using an in vitro kinase assay run in 96-well microtiter plates. Recombinant human p38 (0.5 μg/mL) was mixed with substrate (myelin basic protein, 5 μg/mL) in kinase buffer (25 mM Hepes, 20 mM MgCl2 and 150 mM NaCl) and compound. One μCi/well of 33P-labeled ATP (10 μM) was added to a final volume of 100 μL. The reaction was run at 32° C. for 30 min. and stopped with a 1M HCl solution. The amount of radioactivity incorporated into the substrate was determined by trapping the labeled substrate onto negatively charged glass fiber filter paper using a 1% phosphoric acid solution and read with a scintillation counter. Negative controls include substrate plus ATP alone.
- All compounds exemplified displayed p38 IC50s of between 1 nM and 10 μM.
- The in vivo inhibitory properties of selected compounds were determined using a murine LPS induced TNFα production in vivo model. BALB/c mice (Charles River Breeding Laboratories; Kingston, N.Y.) in groups of ten were treated with either vehicle or compound by the route noted. After one hour, endotoxin (E. coli lipopolysaccharide (LPS) 100 μg) was administered intraperitoneally (i.p.). After 90 min, animals were euthanized by carbon dioxide asphyxiation and plasma was obtained from individual animals by cardiac puncture into heparinized tubes. The samples were clarified by centrifugation at 12,500×g for 5 min at 4° C. The supernatants were decanted to new tubes, which were stored as needed at −20° C. TNFα levels in sera were measured using a commercial murine TNF ELISA kit (Genzyme).
- The proceeding examples can be repeated with similar success by substituting the generically of specifically described reactants and/or operating conditions of this invention for those used in the proceeding examples
- From the foregoing discussion, one skilled in the art can easily ascertain the essential characteristics of this invention and, without departing from the spirit and scope thereof can make various changes and modifications of the invention to adapt it to various usages and conditions.
Claims (22)
1. A method of treating a disease, other than cancer, mediated by p-38, comprising administering a compound of formula I
B is a substituted or unsubstituted, up to tricyclic aryl or heteroaryl moiety of up to 30 carbon atoms with at least one 6-member aromatic structure containing 0-4 members of the group consisting of nitrogen, oxygen and sulfur, wherein if B is substituted, it is substituted by one or more substituents selected from the group consisting of halogen, up to per-halo, and Wn, wherein n is 0-3 and each W is independently selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —C(O)—R7, —NO2, —OR7, —SR7, —NR7R7, —NR7C(O)OR7, —NR7C(O)R7, C1-C10 alkyl, C1-10-alkenyl, C1-C10-alkoxy, C3-C10 cycloalkyl, C6-C14 aryl, C7-C24 alkaryl, C3-C13 heteroaryl, C4-C23 alkheteroaryl, substituted C1-C10 alkyl, substituted C2-10-alkenyl, substituted C1-10-alkoxy, substituted C3-C10 cycloalkyl, substituted C4-C23 alkheteroaryl and Q-Ar;
wherein if W is a substituted group, it is substituted by one or more substituents independently selected from the group consisting of —CN, —CO2R7, —C(O)R7, —C(O)NR7R7, —OR7, —SR7, —NR7R7, NO2, —NR7C(O)R7, —NR7C(O)OR7 and halogen up to per-halo;
wherein each R7 is independently selected from H, C1-C10 alkyl, C2-10-alkenyl, C3-C10 cycloalkyl, C6-C14 aryl, C3-C13 hetaryl, C7-C24 alkaryl, C4-C23 alkheteroaryl, up to per-halosubstituted C1-C10 alkyl, up to per-halosubstituted C2-10-alkenyl, up to per-halosubstituted C3-C10 cycloalkyl, up to per-halosubstituted C6-C14 aryl and up to per-halosubstituted C3-C13 hetaryl,
wherein Q is —O—, —S—, —N(R7)—, —(CH2)—m, —C(O)—, —CH(OH)—, —(CH2)mO—, —NR7C(O)NR7R7′—, —NR7C(O)—, —C(O)NR7—, —(CH2)mS—, —(CH2)mN(R7)—, —O(CH2)m—, —CHXa, —CXa 2—, —S—(CH2)m— and —N(R7)(CH2)m—,
m=1-3, and Xa is halogen; and
Ar is a 5-10 member aromatic structure containing 0-2 members of the group consisting of nitrogen, oxygen and sulfur, which is unsubstituted or substituted by halogen up to per-halo and optionally substituted by Zn1, wherein n1 is 0 to 3 and each Z is independently selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —C(O)—NR7, —COR7, —NO2, —OR7, —SR7, —NR7R7, —NR7C(O)OR7, —NR7C(O)R7, C1-C10 alkyl, C3-C10 cycloalkyl, C6-C14 aryl, C3-C13 hetaryl, C7-C24 alkaryl, C4-C23 alkheteroaryl, substituted C1-C10 alkyl, substituted C3-C10 cycloalkyl, substituted C7-C24 alkaryl and substituted C4-C23 alkheteroaryl; wherein the one or more substituents of Z is selected from the group consisting of —CN, —CO2R7, —C(O)NR7R7, —OR7, —SR7, —NO2, —NR7R7, —NR7C(O)R7, —NR7C(O)OR7,
R3′, R4′, R5′ are each independently H, C1-10-alkyl, optionally substituted by halogen, up to perhalo, C1-10 alkoxy, optionally substituted by halogen, up to perhaloalkoxy, halogen; NO2 or NH2;
R6′ is H, C1-10-alkyl, C1-10 alkoxy, —NHCOR1; —NR1COR1; NO2;
one of R4′, R5′ or R6′ can be —X—Y,
or 2 adjacent R4′-R6′ can together be an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10 alkoxy, C3-10 cycloalkyl C2-10 alkenyl, C1-10 alkanoyl, C6-12 aryl, C5-12 hetaryl or C6-12 aralkyl;
R1 is C1-10-alkyl optionally substituted by halogen, up to perhalo;
X is —CH2—, —S—, —N(CH3)—, —NHC(O)—, —CH2—S—, —S—CH2—, —C(O)—, or —O—; and
X is additionally a single bond where Y is pyridyl;
Y is phenyl, pyridyl, naphthyl, pyridone, pyrazine, benzodioxane, benzopyridine, pyrimidine or benzothiazole, each optionally substituted by
C1-10-alkyl, C1-10-alkoxy, halogen, OH, —SCH3 or NO2 or, where Y is phenyl, by
2. A method according to claim 1 , comprising administering a compound of formula Ia
wherein
R3, R4, R5, and R6 are each independently H; halogen; C1-10-alkyl optionally substituted by halogen up to perhalo; C1-10-alkoxy optionally substituted by at least one hydroxy group or halogen up to perhalo, C6-12 aryl, optionally substituted by C1-10 alkoxy or halogen, C5-12 hetaryl, optionally substitued by C1-10 alkyl, C1-100 alkoxy or halogen; NO2; SO2F; —SO2CHpX3-p; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; NH2; —N(SO2R1)2; furyloxy;
2 adjacent R3-R6 can together form an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10-alkoxy, C3-10-cycloalkyl, C2-10-alkenyl, C1-10-alkanoyl, C6-12-aryl, C5-12-hetaryl, C6-12-aralkyl, C6-12-alkaryl, halogen; —NR1; —NO2; —CF3; —COOR1; —NHCOR1; —CN; —CONR1R1; —SO2R2; —SOR2; —SR2; in which R1 is H or C1-10-alkyl and R2 is C1-10-alkyl optionally substituted by halogen, up to perhalo, with —SO2-optionally incorporated in the aryl or hetaryl ring;
p is 0 or 1;
one of R3, R4, R5 or R6 can be —X—Y,
with the proviso that if R3 and R6 are both H, one of R4 or R5 is not H, and R3′-R6′ are as defined in claim 1 .
3. A method according to claim 2 , wherein
R3 is H; halogen; C1-10-alkyl optionally substituted by halogen, up to perhalo, NO2, —SO2F or —SO2CF3;
R4 is H, C1-10-alkyl, C1-10-alkoxy, halogen or NO2;
R5 is H, C1-100-alkyl optionally substituted by halogen, up to perhalo;
R6 is H, hydroxy, C1-10-alkoxy optionally substituted by at least one hydroxy group;
—COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo
or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy, thiophene, pyrole or methyl substituted pyrole,
6. A method according to claim 2 , wherein R5′ is C1-10-alkyl, halogen, CF3, halogen, NO2 or NH2.
8. A method according to claim 4 , wherein R3 is t-butyl or CF3 and R6 is —OCH3.
9. A method according to claim 2 , wherein the disease is mediated by a cytokine or protease regulated by p38.
10. A method according to claim 2 , wherein the disease is mediated by TNFα, MMP-1, MMP-3, IL-1, IL-6 or IL-8.
11. A method according to claim 2 , wherein the disease is an inflammatory or immunomodulatory disease.
12. A method according to claim 2 , wherein the disease is osteoarthritis, rheumatoid arthritis, osteoporosis, asthma, septic shock, inflammatory bowel disease, or the result of host-versus-graft reactions.
13. A method according to claim 1 , wherein the compound of formula I is
N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-phenyloxphenyl)urea;
N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-pyridinyloxy)phenyl)urea;
N-(5-Tert-Butyl-2-methoxyphenyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea;
N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(4-(4,7-methano-1H-isoindole-1,3(2H)-dionyl)methyl)phenyl)urea;
N-(5-tert-Butyl-2-phenylphenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(3-thienyl)phenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
N-(5-tert-Butyl-2-methoxyphenyl)-N′-(4-(3-pyridinyl)methylphenyl)urea;
N-(5-tert-Butyl-2-(3-tetrahydrofuranyloxy)phenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-2-fluorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-fluoro-3-chlorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-3-chlorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-methyl-3-fluorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(2,4-difluorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-phenyloxy-3,5-dichlorophenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(4-pyridinylthio)phenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(4-pyridinyloxy)phenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(3-(4-pyridinylthio)phenyl)urea;
N-(5-Trifluoromethyl-2-methoxyphenyl)-N′-(4-(3-(N-methylaminocarbonyl)-phenyloxy)phenyl)-urea;
N-(5-Fluorosulfonyl)-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-2-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-chlorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluoro-3-chlorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluoro-3-methylphenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(2,3-dimethylphenyl)urea;
N-(5-(Trifluoromethanesulfonyl)-2-methoxphenyl)-N′-(4-methylphenyl)urea;
N-(3-methoxy-2-naphthyl)-N′-(2-fluorophenyl)urea);
N-(3-Methoxy-2-naphthyl)-N′-(4-methylphenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(3-fluorophenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(4-methyl-3-fluorophenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(2,3-dimethylphenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(1-naphthyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(4-(4-pyridinylmethyl)phenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(4-(4-pyridinylthio)phenyl)urea;
N-(3-Methoxy-2-naphthyl)-N′-(4-(4-methoxyphenyloxy)phenyl)urea; and
N-(3-Methoxy-2-naphthyl)-N′-(4-(4-(4,7-methano-1H-isoindole-1,3(2H)-dionyl)methyl)phenyl)urea.
N-(2-Hydroxy-4-nitro-5-chlorophenyl)-N′-(phenyl)urea; or
N-(2-Hydroxy-4-nitro-5-chlorophenyl)-N′-(4-(4-pyridinylmethly)phenyl)urea.
14. A compound of formula I
wherein
R3, R4 and R6 are each independently H; halogen; C1-10-alkyl optionally substituted by halogen to perhalo; C1-10-alkoxy optionally substituted by at least one hydroxy group; NO2; SO2F; —SO2CHnX3-n; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; C6-12 aryl, optionally substituted by C1-10-alkyl, C1-10 alkoxy or halogen, C5-12 hetaryl, optionally substitued by C1-10 alkyl, C1-10 alkoxy or halogen; NH2; —N(SO2R1)2; furyloxy;
2 adjacent R3-R6 can together form an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10-alkoxy, C3-10-cycloalkyl, C2-10-alkenyl, C1-10-alkanoyl, C6-12-aryl, C5-12-hetaryl, C6-12-aralkyl, C6-12-alkaryl, halogen; NR1R1, NO2; —CF3; —COOR1; —NHCOR1; —CN; —CONR1R2; —SO2R2; —SOR2; —SR2; in which R1 is H or C1-10-alkyl and R2 is C1-10-alkyl; C1-10-alkoxy, optionally substituted by halogen up to perhaloalkoxy,
R3′, R4′ and R5′ are each independently H, C1-10-alkyl, optionally substituted by halogen, up to perhalo; halogen; NO2 or NH2;
R6′ is H, C1-10-alkyl, halogen, —NHCOR1; —NR1COR1; NO2;
or 2 adjacent R4′-R6′ can together be an aryl or hetaryl ring with 5-12 atoms;
R1 is C1-10-alkyl;
n is 0 or 1;
X is —CH2—, —S—, N(CH3)—, —NHC(O), CH2—S—, —S—CH2—, —C(O)—, or —O—; and
Y is phenyl, pyridyl, naphthyl, pyridone, pyrazine, benzodixane, benzopyridine, pyrimidine or benzothiazole, each optionally substituted by
C1-10-alkyl, C1-10-alkoxy, halogen or NO2 or, where Y is phenyl, by
or a pharmaceutically acceptable salt thereof,
with the provisos that
(a) if R3 and R6 are both H, one of R4 or R5 is not H,
(c) R6 is phenyl substituted by halogen, alkoxy substituted by hydroxy, —SO2CF2H, —OR1CONHR1,
15. A compound according to claim 14 , wherein
R3 is H, halogen or C1-10-alkyl optionally substituted by halogen, up to perhalo, NO2, —SO2F or —SO2CF3;
R4 is H, C1-10-alkyl, C1-10-alkoxy, halogen or NO2;
R5 is H, C1-10-alkyl optionally substituted by halogen, up to perhalo;
R6 is H, hydroxy, C1-10-alkoxy optionally substituted by at least one hydroxy group;
—COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo
or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy,
16. A compound according to claim 14 , wherein R3 is Cl, F, C4-5-branched alkyl, —SO2F or —SO2CF3; and R6 is hydroxy; C1-10-alkoxy optionally substituted by at least one hydroxy group; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halo or C1-10-alkoxy; NH2; —N(SO2R1)2, furyloxy,
18. A compound according to claim 14 , wherein R3 is t-butyl or CF3 and R6 is —OCH3.
19. A compound according to claim 14 , which is
N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(N-methylaminocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-tert-Butyl-2-(N-morpholinocarbonyl)methoxyphenyl)-N′-(1-naphthyl)urea;
N-(5-tert-Butyl-2-(3-tetrahydrofuranyloxy)phenyl)-N′-(2,3-dichlorophenyl)urea;
N-(5-Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methylphenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-2-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-fluorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-methyl-3-chlorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-4-fluoro-3-chlorophenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(4-fluoro-3-methylphenyl)urea;
N-(5-(Difluoromethanesulfonyl)-2-methoxyphenyl)-N′-(2,3-dimethylphenyl)urea; or
N-(5-(Trifluoromethanesulfonyl)-2-methoxphenyl)-N′-(4-methylphenyl)urea.
20. A compound of formula II
wherein
R3, R4, R5, and R6 are each independently H; halogen; C1-10-alkyl optionally substituted by halogen up to perhalo; C1-10-alkoxy optionally substituted by at least one hydroxy group; NO2; SO2F; —SO2CHnX3-n; —COOR1; —OR1CONHR1; —NHCOR1; —SR1; phenyl optionally substituted by halogen or C1-10-alkoxy; NH2; —N(SO2R1)2; furyloxy;
2 adjacent R3-R6 can together form an aryl or hetaryl ring with 5-12 atoms, optionally substituted by C1-10-alkyl, C1-10-alkoxy, C3-10-cycloalkyl, C2-10-alkenyl, C1-10-alkanoyl, C6-12-aryl, C5-12-hetaryl, C6-12-aralkyl, C6-12-alkaryl, halogen; —NR1; —NO2; —CF3; —COOR1; —NHCOR1; —CN; —CONR1R1; —SO2R2; —SOR2; —SR2; in which R1 is H or C1-10-alkyl and R2 is C1-10-alkyl;
R3′, R4′ and R5′ are each independently H, C1-10-alkyl optionally substituted by halogen, up to perhalo; halogen; NO2 or NH2;
R6′ is H, C1-10-alkyl, halogen, —NHCOR1; —NR1COR1; NO2;
R1 is C1-10-alkyl;
n is 0 or 1;
X is —CH2—, —S— or —O—; and
Y is phenyl, pyridyl, naphthyl or benzothiazole, each optionally substituted by C1-10-alkyl, C1-10-alkoxy, halogen or NO2 or, where Y is phenyl, by
or a pharmaceutically acceptable salt thereof
with the provisos that
(a) if R3 and R6 are both H, one of R4 or R5 is not H, and
(b) R6 is alkoxy substituted by hydroxy, —SO2CF2H, —OR1CONHR1,
21. A pharmaceutical composition comprising a compound of claim 14 , and a physiologically acceptable carrier.
22. A pharmaceutical composition comprising a compound of claim 20 , and a physiologically acceptable carrier.
Priority Applications (2)
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US11/932,397 US20090093526A1 (en) | 1997-12-22 | 2007-10-31 | Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas |
US13/539,914 US20120270878A1 (en) | 1997-12-22 | 2012-07-02 | Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas |
Applications Claiming Priority (5)
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US12643997P | 1997-12-22 | 1997-12-22 | |
US28552298A | 1998-12-22 | 1998-12-22 | |
US45801599A | 1999-12-10 | 1999-12-10 | |
US10/060,396 US7517880B2 (en) | 1997-12-22 | 2002-02-01 | Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas |
US11/932,397 US20090093526A1 (en) | 1997-12-22 | 2007-10-31 | Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas |
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US11779572B1 (en) | 2022-09-02 | 2023-10-10 | Deciphera Pharmaceuticals, Llc | Methods of treating gastrointestinal stromal tumors |
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US20120270878A1 (en) | 2012-10-25 |
US20040102636A1 (en) | 2004-05-27 |
US7517880B2 (en) | 2009-04-14 |
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