WO2012139993A1 - 1,3 oxazines as bace1 and/or bace2 inhibitors - Google Patents
1,3 oxazines as bace1 and/or bace2 inhibitors Download PDFInfo
- Publication number
- WO2012139993A1 WO2012139993A1 PCT/EP2012/056408 EP2012056408W WO2012139993A1 WO 2012139993 A1 WO2012139993 A1 WO 2012139993A1 EP 2012056408 W EP2012056408 W EP 2012056408W WO 2012139993 A1 WO2012139993 A1 WO 2012139993A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluoro
- phenyl
- amino
- dihydro
- oxazin
- Prior art date
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- 239000003112 inhibitor Substances 0.000 title description 15
- 150000004895 1,3-oxazines Chemical class 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 295
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 48
- 238000011321 prophylaxis Methods 0.000 claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 208000024827 Alzheimer disease Diseases 0.000 claims abstract description 33
- 208000001072 type 2 diabetes mellitus Diseases 0.000 claims abstract description 31
- 239000013543 active substance Substances 0.000 claims abstract description 17
- 239000008194 pharmaceutical composition Substances 0.000 claims abstract description 7
- -1 cyclopropylethynyl- Chemical group 0.000 claims description 119
- 238000000034 method Methods 0.000 claims description 102
- 229910052736 halogen Inorganic materials 0.000 claims description 43
- 150000002367 halogens Chemical class 0.000 claims description 35
- 150000003839 salts Chemical class 0.000 claims description 29
- 206010012601 diabetes mellitus Diseases 0.000 claims description 25
- 239000003814 drug Substances 0.000 claims description 24
- 102000013455 Amyloid beta-Peptides Human genes 0.000 claims description 22
- 108010090849 Amyloid beta-Peptides Proteins 0.000 claims description 22
- 125000001072 heteroaryl group Chemical group 0.000 claims description 21
- 208000009415 Spinocerebellar Ataxias Diseases 0.000 claims description 20
- 201000008319 inclusion body myositis Diseases 0.000 claims description 20
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 19
- HRLVPHGCEGTVLK-UHFFFAOYSA-N 5-cyanopyridine-2-carboxylic acid Chemical compound OC(=O)C1=CC=C(C#N)C=N1 HRLVPHGCEGTVLK-UHFFFAOYSA-N 0.000 claims description 19
- 206010002026 amyotrophic lateral sclerosis Diseases 0.000 claims description 19
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 19
- 125000001424 substituent group Chemical group 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 201000010374 Down Syndrome Diseases 0.000 claims description 12
- 206010044688 Trisomy 21 Diseases 0.000 claims description 12
- KZTXIOLPGIKSOJ-UHFFFAOYSA-N 5-(2,2,2-trifluoroethoxy)pyridine-2-carboxylic acid Chemical compound OC(=O)C1=CC=C(OCC(F)(F)F)C=N1 KZTXIOLPGIKSOJ-UHFFFAOYSA-N 0.000 claims description 11
- 208000037259 Amyloid Plaque Diseases 0.000 claims description 11
- 206010006187 Breast cancer Diseases 0.000 claims description 11
- 208000026310 Breast neoplasm Diseases 0.000 claims description 11
- 208000024172 Cardiovascular disease Diseases 0.000 claims description 11
- 206010028980 Neoplasm Diseases 0.000 claims description 11
- 201000011510 cancer Diseases 0.000 claims description 11
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 11
- 206010039073 rheumatoid arthritis Diseases 0.000 claims description 11
- 206010003178 Arterial thrombosis Diseases 0.000 claims description 10
- 102000007368 Ataxin-7 Human genes 0.000 claims description 10
- 108010032953 Ataxin-7 Proteins 0.000 claims description 10
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- 208000023105 Huntington disease Diseases 0.000 claims description 10
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- 208000003456 Juvenile Arthritis Diseases 0.000 claims description 10
- 206010059176 Juvenile idiopathic arthritis Diseases 0.000 claims description 10
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- 208000002447 Macrophagic myofasciitis Diseases 0.000 claims description 10
- 241001465754 Metazoa Species 0.000 claims description 10
- 208000021386 Sjogren Syndrome Diseases 0.000 claims description 10
- 208000006011 Stroke Diseases 0.000 claims description 10
- 208000027207 Whipple disease Diseases 0.000 claims description 10
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- 206010003246 arthritis Diseases 0.000 claims description 10
- 230000001363 autoimmune Effects 0.000 claims description 10
- 208000035250 cutaneous malignant susceptibility to 1 melanoma Diseases 0.000 claims description 10
- 201000001981 dermatomyositis Diseases 0.000 claims description 10
- 208000005017 glioblastoma Diseases 0.000 claims description 10
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- 230000004054 inflammatory process Effects 0.000 claims description 10
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- 208000025212 Constitutional neutropenia Diseases 0.000 claims description 9
- 208000027390 severe congenital neutropenia 3 Diseases 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 208000037765 diseases and disorders Diseases 0.000 claims description 8
- 125000005843 halogen group Chemical group 0.000 claims description 8
- YZVFSQQHQPPKNX-UHFFFAOYSA-N 1,3-thiazole-5-carboxylic acid Chemical compound OC(=O)C1=CN=CS1 YZVFSQQHQPPKNX-UHFFFAOYSA-N 0.000 claims description 7
- 125000000623 heterocyclic group Chemical group 0.000 claims description 7
- FVAAHYRLUYIRSN-QFBILLFUSA-N n-[3-[(4r,5r)-2-amino-4-methyl-5-(2,2,2-trifluoroethoxy)-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-cyanopyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(=CC=2)C#N)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1OCC(F)(F)F FVAAHYRLUYIRSN-QFBILLFUSA-N 0.000 claims description 6
- JIXCAGUAYBCKGM-SIKLNZKXSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2-cyclopropylethynyl)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(=CC=2)C#CC2CC2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F JIXCAGUAYBCKGM-SIKLNZKXSA-N 0.000 claims description 6
- QVPZORXMLIMRNH-WMLDXEAASA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(Cl)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F QVPZORXMLIMRNH-WMLDXEAASA-N 0.000 claims description 6
- ALKHFUPBQSAGMS-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-cyanopyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(=CC=2)C#N)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F ALKHFUPBQSAGMS-MAUKXSAKSA-N 0.000 claims description 6
- NZASLBMMFRPVKI-ZWKOTPCHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-3,5-dichloropyridine-2-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2C(=CC(Cl)=CN=2)Cl)=CC=C1F NZASLBMMFRPVKI-ZWKOTPCHSA-N 0.000 claims description 5
- AVJOFNVVARWCHZ-SUMWQHHRSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-3,5-dichloropyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CC(Cl)=CN=2)Cl)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F AVJOFNVVARWCHZ-SUMWQHHRSA-N 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 125000004076 pyridyl group Chemical group 0.000 claims description 5
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 4
- RNACDDOYNBSODP-KBXCAEBGSA-N n-[3-[(4r,5r)-2-amino-4-methyl-5-(2,2,2-trifluoroethoxy)-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-3,5-dichloropyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CC(Cl)=CN=2)Cl)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1OCC(F)(F)F RNACDDOYNBSODP-KBXCAEBGSA-N 0.000 claims description 4
- OILODYURZOTHSC-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-4-methyl-5-(2,2,2-trifluoroethoxy)-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(Cl)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1OCC(F)(F)F OILODYURZOTHSC-MAUKXSAKSA-N 0.000 claims description 4
- LTPGAOLCDJJIPI-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-4-methyl-5-(2,2,2-trifluoroethoxy)-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-fluoropyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1OCC(F)(F)F LTPGAOLCDJJIPI-MAUKXSAKSA-N 0.000 claims description 4
- PUJNNEOQOMQHHE-XVDHHWJWSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-2,2-difluorocyclopropane-1-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C2C(C2)(F)F)=CC=C1F PUJNNEOQOMQHHE-XVDHHWJWSA-N 0.000 claims description 4
- WAGVRKPPJOWFFS-RBUKOAKNSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-3-(2,2,2-trifluoroethoxy)pyridine-2-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2C(=CC=CN=2)OCC(F)(F)F)=CC=C1F WAGVRKPPJOWFFS-RBUKOAKNSA-N 0.000 claims description 4
- FFTNLDBKNPISTD-ZWKOTPCHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-4-chloro-1-(2,2-difluoroethyl)pyrazole-3-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2C(=CN(CC(F)F)N=2)Cl)=CC=C1F FFTNLDBKNPISTD-ZWKOTPCHSA-N 0.000 claims description 4
- MVLCYGXVHAGUKG-LEWJYISDSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-5-but-2-ynoxypyrazine-2-carboxamide Chemical compound C1=NC(OCC#CC)=CN=C1C(=O)NC1=CC=C(F)C([C@]2(C)[C@@](COC(N)=N2)(C)F)=C1 MVLCYGXVHAGUKG-LEWJYISDSA-N 0.000 claims description 4
- NPMZPSZAYDDDQG-ZWKOTPCHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2N=CC(Cl)=CC=2)=CC=C1F NPMZPSZAYDDDQG-ZWKOTPCHSA-N 0.000 claims description 4
- GNZDJABHDPTECH-RBUKOAKNSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-5-cyanopyridine-2-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2N=CC(=CC=2)C#N)=CC=C1F GNZDJABHDPTECH-RBUKOAKNSA-N 0.000 claims description 4
- NVOQNXJHOVMVBJ-ZWKOTPCHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4,5-dimethyl-6h-1,3-oxazin-4-yl]-4-fluorophenyl]-5-fluoropyridine-2-carboxamide Chemical compound C[C@]1(F)COC(N)=N[C@]1(C)C1=CC(NC(=O)C=2N=CC(F)=CC=2)=CC=C1F NVOQNXJHOVMVBJ-ZWKOTPCHSA-N 0.000 claims description 4
- YZJJJWWJXVAYMP-SWLSCSKDSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-1-cyanocyclopropane-1-carboxamide Chemical compound C=1C(NC(=O)C2(CC2)C#N)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F YZJJJWWJXVAYMP-SWLSCSKDSA-N 0.000 claims description 4
- OHCOXMADQMWRFQ-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-2,5-dimethylfuran-3-carboxamide Chemical compound O1C(C)=CC(C(=O)NC=2C=C(C(F)=CC=2)[C@]2(C)[C@H](COC(N)=N2)F)=C1C OHCOXMADQMWRFQ-MAUKXSAKSA-N 0.000 claims description 4
- VVDUWXONJNQSOT-XHDPSFHLSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-2-chloro-1,3-thiazole-5-carboxamide Chemical compound C=1C(NC(=O)C=2SC(Cl)=NC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F VVDUWXONJNQSOT-XHDPSFHLSA-N 0.000 claims description 4
- PONYCQGFYCIYRU-BLLLJJGKSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-2-methyl-5-(trifluoromethyl)pyrazole-3-carboxamide Chemical compound CN1N=C(C(F)(F)F)C=C1C(=O)NC1=CC=C(F)C([C@]2(C)[C@H](COC(N)=N2)F)=C1 PONYCQGFYCIYRU-BLLLJJGKSA-N 0.000 claims description 4
- PUZPTNAELKFHSA-SUMWQHHRSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-3-chloro-5-(trifluoromethyl)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CC(=CN=2)C(F)(F)F)Cl)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F PUZPTNAELKFHSA-SUMWQHHRSA-N 0.000 claims description 4
- KYSGVAXATOXFCB-KBXCAEBGSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-3-chloro-5-cyanopyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CC(=CN=2)C#N)Cl)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F KYSGVAXATOXFCB-KBXCAEBGSA-N 0.000 claims description 4
- VKXYNXCIQGNMMI-SUMWQHHRSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-3-fluoro-5-(trifluoromethyl)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CC(=CN=2)C(F)(F)F)F)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F VKXYNXCIQGNMMI-SUMWQHHRSA-N 0.000 claims description 4
- DSOVCCKHSOQORN-XHDPSFHLSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-4-chloro-1h-pyrazole-5-carboxamide Chemical compound C=1C(NC(=O)C=2C(=CNN=2)Cl)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F DSOVCCKHSOQORN-XHDPSFHLSA-N 0.000 claims description 4
- LUQWHFMXIMHIHJ-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2,2,2-trifluoroethoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC(F)(F)F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F LUQWHFMXIMHIHJ-MAUKXSAKSA-N 0.000 claims description 4
- SHANBBFTGPRBCZ-MAUKXSAKSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2,2,3,3,3-pentafluoropropoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC(F)(F)C(F)(F)F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F SHANBBFTGPRBCZ-MAUKXSAKSA-N 0.000 claims description 4
- XKKCXRJVFJWCBS-HNAYVOBHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2,2,3,3-tetrafluoropropoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC(F)(F)C(F)F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F XKKCXRJVFJWCBS-HNAYVOBHSA-N 0.000 claims description 4
- YUDVJPZQJRMSDK-SCLBCKFNSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2,2-difluoroethoxy)pyrazine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC(F)F)=NC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F YUDVJPZQJRMSDK-SCLBCKFNSA-N 0.000 claims description 4
- QINMTEKICIURAP-HNAYVOBHSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(2,2-difluoroethoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC(F)F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F QINMTEKICIURAP-HNAYVOBHSA-N 0.000 claims description 4
- PSZVESJICQKTRE-OXJNMPFZSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(cyclopropylmethoxy)pyrazine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC3CC3)=NC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F PSZVESJICQKTRE-OXJNMPFZSA-N 0.000 claims description 4
- GWXKLHUXFNWDLV-GHTZIAJQSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(cyclopropylmethoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCC3CC3)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F GWXKLHUXFNWDLV-GHTZIAJQSA-N 0.000 claims description 4
- YEOGNKUPUNPNJY-KBXCAEBGSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(difluoromethoxy)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OC(F)F)=CC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F YEOGNKUPUNPNJY-KBXCAEBGSA-N 0.000 claims description 4
- BJYCZMRWVCPZKH-SUMWQHHRSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(difluoromethyl)pyrazine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(=NC=2)C(F)F)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F BJYCZMRWVCPZKH-SUMWQHHRSA-N 0.000 claims description 4
- IJKRHLSQOCWFJH-KBXCAEBGSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(difluoromethyl)pyridine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(=CC=2)C(F)F)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F IJKRHLSQOCWFJH-KBXCAEBGSA-N 0.000 claims description 4
- JIDPJVJKHQADPG-SUMWQHHRSA-N n-[3-[(4r,5r)-2-amino-5-fluoro-4-methyl-5,6-dihydro-1,3-oxazin-4-yl]-4-fluorophenyl]-5-(fluoromethoxy)pyrazine-2-carboxamide Chemical compound C=1C(NC(=O)C=2N=CC(OCF)=NC=2)=CC=C(F)C=1[C@@]1(C)N=C(N)OC[C@@H]1F JIDPJVJKHQADPG-SUMWQHHRSA-N 0.000 claims description 4
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- 210000001685 thyroid gland Anatomy 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000004044 trifluoroacetyl group Chemical group FC(C(=O)*)(F)F 0.000 description 1
- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 239000003656 tris buffered saline Substances 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008215 water for injection Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 238000002424 x-ray crystallography Methods 0.000 description 1
Classifications
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- 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
- A61K31/5355—Non-condensed oxazines and containing further heterocyclic rings
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- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/08—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D263/16—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D263/28—Nitrogen atoms not forming part of a nitro radical
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- C07D265/04—1,3-Oxazines; Hydrogenated 1,3-oxazines
- C07D265/06—1,3-Oxazines; Hydrogenated 1,3-oxazines not condensed with other rings
- C07D265/08—1,3-Oxazines; Hydrogenated 1,3-oxazines not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
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- C07D265/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
- C07D265/04—1,3-Oxazines; Hydrogenated 1,3-oxazines
- C07D265/06—1,3-Oxazines; Hydrogenated 1,3-oxazines not condensed with other rings
- C07D265/08—1,3-Oxazines; Hydrogenated 1,3-oxazines not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D265/10—1,3-Oxazines; Hydrogenated 1,3-oxazines not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with oxygen atoms directly attached to ring carbon atoms
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- AD Alzheimer's disease
- AD is a neurodegenerative disorder of the central nervous system and the leading cause of a progressive dementia in the elderly population. Its clinical symptoms are impairment of memory, cognition, temporal and local orientation, judgment and reasoning but also severe emotional disturbances. There are currently no treatments available which can prevent the disease or its progression or stably reverse its clinical symptoms. AD has become a major health problem in all societies with high life expectancies and also a significant economic burden for their health systems.
- AD is characterized by 2 major pathologies in the central nervous system (CNS), the occurrence of amyloid plaques and neurofibrillar tangles (Hardy et al, The amyloid hypothesis of Alzheimer's disease: progress and problems on the road to therapeutics, Science. 2002 Jul 19;297(5580):353-6, Selkoe, Cell biology of the amyloid beta-protein precursor and the mechanism of Alzheimer's disease, Annu Rev Cell Biol. 1994;10:373-403). Both pathologies are also commonly observed in patients with Down's syndrome (trisomy 21), which also develop AD-like symptoms in early life. Neurofibrillar tangles are intracellular aggregates of the microtubule-associated protein tau (MAPT).
- MTT microtubule-associated protein tau
- Amyloid plaques occur in the extracellular space; their principal components are ⁇ -peptides.
- the latter are a group of proteolytic fragments derived from the ⁇ -amyloid precursor protein (APP) by a series of proteolytic cleavage steps.
- APP ⁇ -amyloid precursor protein
- proteolytic cleavage steps Several forms of APP have been identified of which the most abundant are proteins of 695, 751 and 770 amino acids length. They all arise from a single gene through differential splicing.
- the ⁇ -peptides are derived from the same domain of the APP but differ at their N- and C-termini, the main species are of 40 and 42 amino-acid length.
- ⁇ -peptides are the essential molecules in the pathogenesis of AD: 1) amyloid plaques formed of ⁇ -peptides are invariably part of the AD pathology; 2) ⁇ - peptides are toxic for neurons; 3) in Familial Alzheimer's Disease (FAD) the mutations in the disease genes APP, PSN1, PSN2 lead to increased levels of ⁇ -peptides and early brain amyloidosis; 4) transgenic mice which express such FAD genes develop a pathology which bears many resemblances to the human disease.
- ⁇ -peptides are produced from APP through the sequential action of 2 proteolytic enzymes termed ⁇ - and ⁇ -secretase.
- ⁇ -Secretase cleaves first in the extracellular domain of APP approximately 28 amino acids outside of the trans-membrane domain (TM) to produce a C-terminal fragment of APP containing the TM- and the cytoplasmatic domain ⁇ ).
- CTF ⁇ is the substrate for ⁇ -secretase which cleaves at several adjacent positions within the TM to produce the ⁇ peptides and the cytoplasmic fragment.
- the ⁇ -secretase is a complex of at least 4 different proteins, its catalytic subunit is very likely a presenilin protein (PSEN1, PSEN2).
- the ⁇ -secretase (BACE1, Asp2; BACE stands for ⁇ -site APP-cleaving enzyme) is an aspartyl protease which is anchored into the membrane by a transmembrane domain (Vassar et al, Beta- seer etase cleavage of Alzheimer's amyloid precursor protein by the transmembrane aspartic protease BACE, Science. 1999 Oct 22; 286(5440) : 735). It is expressed in many tissues of the human organism but its level is especially high in the CNS.
- mice which have been genetically engineered to express the human APP gene and which form extensive amyloid plaques and Alzheimer's disease like pathologies during aging fail to do so when ⁇ -secretase activity is reduced by genetic ablation of one of the BACE1 alleles (McConlogue et al, Partial reduction of BACE1 has dramatic effects on Alzheimer plaque and synaptic pathology in APP Transgenic Mice. J Biol Chem. 2007 Sep 7;282(36):26326). It is thus presumed that inhibitors of BACE1 activity can be useful agents for therapeutic intervention in Alzheimer's disease (AD).
- AD Alzheimer's disease
- Type 2 diabetes is caused by insulin resistance and inadequate insulin secretion from pancreatic ⁇ -cells leading to poor blood-glucose control and hyperglycemia (M Prentki & CJ Nolan, "Islet beta-cell failure in type 2 diabetes.” J. Clin. Investig. 2006, 116(7), 1802-1812).
- Patients with T2D have an increased risk of microvascular and macrovascular disease and a range of related complications including diabetic nephropathy, retinopathy and cardiovascular disease.
- Tmem27 has been identified as a protein promoting beta-cell proliferation (P Akpinar, S Kuwajima, J Kriitzfeldt, M Stoffel, "Tmem27: A cleaved and shed plasma membrane protein that stimulates pancreatic ⁇ cell proliferation", Cell Metab. 2005, 2, 385-397) and insulin secretion (K Fukui, Q Yang, Y Cao, N Takahashi et al, "The HNF-1 target Collectrin controls insulin exocytosis by SNARE complex formation", Cell Metab. 2005, 2, 373-384).
- Tmem27 is a 42 kDa membrane glycoprotein which is constitutively shed from the surface of ⁇ -cells, resulting from a degradation of the full-length cellular Tmem27.
- Overexpression of Tmem27 in a transgenic mouse increases ⁇ -cell mass and improves glucose tolerance in a diet-induced obesity DIO model of diabetes.
- siRNA knockout of Tmem27 in a rodent ⁇ -cell proliferation assay reduces the proliferation rate, indicating a role for Tmem27 in control of ⁇ -cell mass.
- BACE2 inhibitors In the same proliferation assay, BACE2 inhibitors also increase proliferation. However, BACE2 inhibition combined with Tmem27 siRNA knockdown results in low proliferation rates. Therefore, it is concluded that BACE2 is the protease responsible for the degradation of Tmem27. Furthermore, in vitro, BACE2 cleaves a peptide based on the sequence of Tmem27. The closely related protease BACEl does not cleave this peptide and selective inhibition of BACEl alone does not enhance proliferation of ⁇ -cells.
- BACE2 The close homolog BACE2 is a membrane-bound aspartyl protease and is co-localized with Tmem27 in human pancreatic ⁇ -cells (G Finzi, F Franzi, C Placidi, F Acquati et al, "BACE2 is stored in secretory granules of mouse and rat pancreatic beta cells", Ultrastruct Pathol. 2008, 32(6), 246-251). It is also known to be capable of degrading APP (I Hussain, D Powell, D Howlett, G Chapman et al, "ASP1 (BACE2) cleaves the amyloid precursor protein at the ⁇ -secretase site" Mol Cell Neurosci.
- IL-1R2 P Kuhn, E Marjaux, A Imhof, B De Strooper et al, "Regulated intramembrane proteolysis of the interleukin-1 receptor II by alpha-, beta-, and gamma-secretase" J. Biol. Chem. 2007, 282(16), 11982-11995) and ACE2.
- the capability to degrade ACE2 indicates a possible role of BACE2 in the control of hypertension. Inhibition of BACE2 is therefore proposed as a treatment for T2D with the potential to preserve and restore ⁇ -cell mass and stimulate insulin secretion in pre-diabetic and diabetic patients.
- Such compounds are useful as therapeutically active substances, particularly in the treatment and/or prevention of diseases which are associated with the inhibition of BACE2.
- the formation, or formation and deposition, of ⁇ -amyloid peptides in, on or around neurological tissue are inhibited by the present compounds, i.e. inhibition of the ⁇ -production from APP or an APP fragment.
- Inhibitors of BACEl and/or BACE2 can in addition be used to treat the following diseases: IBM (inclusion body myositis) (Vattemi G. et al, Lancet. 2001 Dec 8;358(9297): 1962-4), Down's Syndrome (Barbiero L. et al, Exp Neurol. 2003 Aug;182(2):335-45), Wilson's Disease (Sugimoto I. et al, J Biol Chem. 2007 Nov 30;282(48):34896-903), Whipple's disease (Desnues B. et al, Clin Vaccine Immunol.
- the present invention provides novel compounds of formula I, their manufacture, medicaments based on a compound in accordance with the invention and their production as well as the use of compounds of formula I in the control or prevention of illnesses such as Alzheimer's disease and type 2 diabetes. Furthermore the use of compounds of formula I in the treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma, rheumatoid arthritis, Sjogren syndrome,
- the present invention provides 4-(3-amino-phenyl)-5,6-dihydro-4H-[l,3]oxazin-2- ylamines having BACEl and/or BACE2 inhibitory properties, their manufacture, pharmaceutical compositions containing them and their use as therapeutically active substances.
- the present invention provides a compounds of formula I,
- the present compounds have Asp2 ( ⁇ -secretase, BACEl or Memapsin-2) inhibitory activity and can therefore be used in the therapeutic and/or prophylactic treatment of diseases and disorders characterized by elevated ⁇ -amyloid levels and/or ⁇ -amyloid oligomers and/or ⁇ -amyloid plaques and further deposits, particularly Alzheimer's disease. And/or the present compounds have BACE2 inhibitory activity and can therefore be used in the therapeutic and/or prophylactic treatment of diseases and disorders such as type 2 diabetes and other metabolic disorders.
- the present invention provides a compound of formula I and their pharmaceutically acceptable salts thereof, the preparation of the above mentioned compounds, medicaments containing them and their manufacture as well as the use of the above mentioned compounds in the therapeutic and/or prophylactic treatment of diseases and disorders which are associated with inhibition of BACEl and/or BACE2 activity, such as Alzheimer's disease and type 2 diabetes. Furthermore, the formation, or formation and deposition, of ⁇ -amyloid plaques in, on or around neurological tissue (e.g., the brain) are inhibited by the present compounds by inhibiting the ⁇ production from APP or an APP fragment.
- Ci-6-alkyl stands for a hydrocarbon radical which can be linear or branched, with single or multiple branching, wherein the alkyl group in general comprises 1 to 6 carbon atoms, for example, methyl (Me), ethyl (Et), propyl, isopropyl (i-propyl), n-butyl, i-butyl (isobutyl), 2-butyl (sec-butyl), t-butyl (tert-butyl), isopentyl, 2-ethyl-propyl, 1,2-dimethyl-propyl and the like.
- Ci-3-alkyl stands for a hydrocarbon radical which can be linear or branched, wherein the alkyl group comprises 1 to 3 carbon atoms.
- Particular "Ci-6-alkyl” are “Ci-3-alkyl”.
- Specific are methyl and ethyl. Most specific is methyl.
- cyano-Ci-6-alkyl alone or in combination with other groups, refers to Ci- 6 - alkyl as defined herein, which is substituted by one or multiple cyano, particularly 1-5 cyano, more particularly 1 cyano. Examples are cyano-methyl and the like.
- halogen-Ci-6-alkyl refers to Ci- 6 - alkyl as defined herein, which is substituted by one or multiple halogen, particularly 1-5 halogen, more particularly 1-3 halogen, most particularly 1 halogen or 3 halogen.
- halogen-C 1-3- alkyl alone or in combination with other groups, refers to Ci-3-alkyl as defined herein, which is substituted by one or multiple halogen, particularly 1-5 halogen, more particularly 1-3 halogen, most particularly 1 halogen or 3 halogen.
- Particular halogen is fluoro.
- halogen-C i- 6 - alkyl is fluoro-Ci-6-alkyl and particular "halogen-C 1-3 -alkyl” is fluoro-C 1-3 -alkyl.
- Examples are difluoromethyl, chloromethyl, fluoromethyl and the like. Specific are trifluoromethyl, -CH 2 - CHF 2 and -CH 2 -CH 2 F.
- Ci_ 6-alkoxy-Ci-6-alkyl refers to Ci_ 6-alkyl, which is substituted by one or multiple Ci-6-alkoxy as defined herein. Examples are MeO-CH 2 -, lMeO-Et, 2MeO-Et, lMeO-2EtO-propyl and the like.
- C3-6-cycloalkyl-Ci-6-alkyl refers to Ci-6-alkyl, which is substituted by one or multiple C3-6-cycloalkyl as defined herein. Examples are cyclopropyl-methyl and the like
- cyano alone or in combination with other groups, refers to N ⁇ C-(NC-).
- hydroxy alone or in combination with other groups, refers to HO-.
- halogen denotes chloro (CI), iodo (I), fluoro (F) and bromo (Br). Particular "halogen” is CI and F. Specific is F.
- heteroaryl refers to an aromatic carbocyclic group of having a single 4 to 8 membered ring or multiple condensed rings comprising 6 to 14, in particular 6 to 10 ring atoms and containing 1, 2 or 3 heteroatoms individually selected from N, O and S, in particular N and O, in which group at least one heterocyclic ring is aromatic.
- heteroaryl examples include benzofuryl, benzoimidazolyl, IH-benzoimidazolyl, benzooxazinyl, benzoxazolyl, benzothiazinyl, benzothiazolyl, benzothienyl, benzotriazolyl, furyl, imidazolyl, indazolyl, IH-indazolyl, indolyl, isoquinolinyl, isothiazolyl, isoxazolyl, oxazolyl, pyrazinyl, pyrazolyl (pyrazyl), lH-pyrazolyl, pyrazolo[l,5-a]pyridinyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, quinolinyl, tetrazolyl, thiazolyl, thienyl, triazolyl, 6,7-dihydro-5H-[
- heteroaryl are pyridinyl, pyrazinyl, furyl, thiazolyl, 2H-pyrazolyl and lH-pyrazolyl.
- heterocyclyl denotes a monovalent saturated or partly unsaturated mono- or bicyclic ring system of 4 to 9 ring atoms, comprising 1, 2, or 3 ring heteroatoms selected from N, O and S, the remaining ring atoms being carbon.
- Bicyclic means consisting of two cycles having two ring atoms in common, i.e. the bridge separating the two rings is either a single bond or a chain of one or two ring atoms.
- Examples for monocyclic saturated heterocyclyl are azetidinyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydro- thienyl, pyrazolidinyl, imidazolidinyl, oxazolidinyl, isoxazolidinyl, thiazolidinyl, piperidinyl, tetrahydropyranyl, tetrahydrothiopyranyl, piperazinyl, morpholinyl, thiomorpholinyl, 1, 1-dioxo- thiomorpholin-4-yl, azepanyl, diazepanyl, homopiperazinyl, or oxazepanyl.
- bicyclic saturated heterocyclyl examples include 8-aza-bicyclo[3.2.1]octyl, quinuclidinyl, 8-oxa-3-aza- bicyclo[3.2.1]octyl, 9-aza-bicyclo[3.3.1]nonyl, 3-oxa-9-aza-bicyclo[3.3.1]nonyl, or 3-thia-9-aza- bicyclo[3.3.1]nonyl.
- Examples for partly unsaturated heterocyclyl are dihydrofuryl, imidazolinyl, dihydro-oxazolyl, tetrahydro-pyridinyl, or dihydropyranyl.
- Ci-6-alkoxy stands for an -O-Ci-6-alkyl radical which can be linear or branched, with single or multiple branching, wherein the alkyl group in general comprises 1 to 6 carbon atoms, for example, methoxy (OMe, MeO), ethoxy (OEt), propoxy, isopropoxy (i-propoxy), n-butoxy, i-butoxy (iso-butoxy), 2-butoxy (sec-butoxy), t-butoxy (tert-butoxy), isopentyloxy (i-pentyloxy) and the like.
- Particular "Ci-6-alkoxy” are groups with 1 to 4 carbon atoms.
- halogen-Ci-6-alkoxy alone or in combination with other groups, refers to Ci- 6 - alkoxy as defined herein, which is substituted by one or multiple halogens, in particular fluoro.
- Particular "halogen-Ci-6-alkoxy” are fluoro-Ci-6-alkoxy.
- difluoromethoxy and trifluoromethoxy are fluoro-Ci-6-alkoxy.
- C 3-6 -cycloalkyl -Ci-6-alkoxy refers to Ci-6-alkoxy as defined herein, which is substituted by one or multiple "C 3 - 6-cycloalkyl” as defined herein, in particular cyclopropyl.
- Particular "C 3-6 -cycloalkyl-Ci-6-alkoxy” are cyclopropyl-Ci-6-alkoxy. Specific are cyclopropyl-methoxy and cyclopropyl-ethoxy.
- C3 -6 -cycloalkyl-C2-6-alkynyl refers to a "C3-6-cycloalkyl” as defined herein linked via a "C2-6-alkynyl” as defined herein. Specific is cyclopropyl- ethyny 1.
- C3 -6 -cycloalkyl denotes a monovalent saturated monocyclic or bicyclic hydrocarbon group of 3 to 6 ring carbon atoms, particularly a monovalent saturated monocyclic hydrocarbon group of 3 to 5 ring carbon atoms.
- Bicyclic means consisting of two saturated carbocycles having two carbon atoms in common, i.e. the bridge separating the two rings is either a single bond or a chain of one or two carbon atoms.
- Particular C3-6-cycloalkyl groups are monocyclic. Examples are cyclopropyl, cyclobutanyl, cyclopentyl, cyclohexyl or cycloheptyl.
- bicyclic cycloalkyl examples include bicyclo[2.2.1]heptanyl, bicyclo[2.2.2]octanyl or adamantanyl.
- Particular "C3 -6 -cycloalkyl” is cyclohexyl.
- C 2 -6-alkynyl denotes a monovalent linear or branched saturated hydrocarbon group of 2 to 6 carbon atoms, in particular from 2 to 4 carbon atoms, and comprising one, two or three triple bonds.
- Examples of C 2 -6-alkynyl include ethynyl, propynyl, prop-2-ynyl and n-butynyl. Specific are ethynyl and propynyl.
- C 2 -6-alkynyl-Ci-6-alkoxy refers to a "C 2- 6-alkynyl” as defined herein linked via a "Ci-6-alkoxy” as defined herein. Specific is 5-but-2- ynyloxy.
- pharmaceutically acceptable salts refers to salts that are suitable for use in contact with the tissues of humans and animals.
- Suitable salts with inorganic and organic acids are, but are not limited to acetic acid, citric acid, formic acid, fumaric acid, hydrochloric acid, lactic acid, maleic acid, malic acid, methane-sulfonic acid, nitric acid, phosphoric acid, p-toluenesulphonic acid, succinic acid, sulfuric acid, tartaric acid, trifluoroacetic acid and the like.
- formic acid trifluoroacetic acid and hydrochloric acid.
- pharmaceutically acceptable carrier and “pharmaceutically acceptable auxiliary substance” refer to carriers and auxiliary substances such as diluents or excipients that are compatible with the other ingredients of the formulation.
- pharmaceutical composition encompasses a product comprising specified ingredients in pre-determined amounts or proportions, as well as any product that results, directly or indirectly, from combining specified ingredients in specified amounts. Particularly it encompasses a product comprising one or more active ingredients, and an optional carrier comprising inert ingredients, as well as any product that results, directly or indirectly, from combination, complexation or aggregation of any two or more of the ingredients, or from dissociation of one or more of the ingredients, or from other types of reactions or interactions of one or more of the ingredients.
- inhibitor denotes a compound which competes with, reduces or prevents the binding of a particular ligand to particular receptor or which reduces or prevents the inhibition of the function of a particular protein.
- IC 50 half maximal inhibitory concentration
- IC 50 values can be converted logarithmically to pIC 5 o values (-log IC 50 ), in which higher values indicate exponentially greater potency.
- the IC 50 value is not an absolute value but depends on experimental conditions e.g. concentrations employed.
- the IC 50 value can be converted to an absolute inhibition constant (Ki) using the Cheng-Prusoff equation (Biochem. Pharmacol. (1973) 22:3099).
- Ki absolute inhibition constant
- Ki values can be converted logarithmically to pKi values (-log Ki), in which higher values indicate exponentially greater potency.
- “Therapeutically effective amount” means an amount of a compound that, when administered to a subject for treating a disease state, is sufficient to effect such treatment for the disease state.
- the “therapeutically effective amount” will vary depending on the compound, disease state being treated, the severity or the disease treated, the age and relative health of the subject, the route and form of administration, the judgment of the attending medical or veterinary practitioner, and other factors.
- variable incorporates by reference the broad definition of the variable as well as preferred, more preferred and most preferred definitions, if any.
- treating when referring to a chemical reaction means adding or mixing two or more reagents under appropriate conditions to produce the indicated and/or the desired product. It should be appreciated that the reaction which produces the indicated and/or the desired product may not necessarily result directly from the combination of two reagents which were initially added, i.e., there can be one or more intermediates which are produced in the mixture which ultimately leads to the formation of the indicated and/or the desired product.
- protecting group denotes the group which selectively blocks a reactive site in a multifunctional compound such that a chemical reaction can be carried out selectively at another unprotected reactive site in the meaning conventionally associated with it in synthetic chemistry.
- Protecting groups can be removed at the appropriate point.
- Exemplary protecting groups are amino-protecting groups, carboxy-protecting groups or hydroxy-protecting groups.
- amino-protecting group denotes groups intended to protect an amino group and includes benzyl, benzyloxycarbonyl (carbobenzyloxy, CBZ), 9-Fluorenylmethyloxycarbonyl (FMOC), p- methoxybenzyloxycarbonyl, p-nitrobenzyloxycarbonyl, tert-butoxycarbonyl (BOC), and trifluoroacetyl. Further examples of these groups are found in T. W. Greene and P. G. M. Wuts, "Protective Groups in Organic Synthesis", 2nd ed., John Wiley & Sons, Inc., New York, NY, 1991, chapter 7; E.
- protected amino group refers to an amino group substituted by an amino-protecting groups.
- Particular amino- protecting groups are tert-butoxycarbonyl group, a bis(dimethoxyphenyl)-phenylmethyl and dimethoxytrityl.
- leaving group denotes the group with the meaning conventionally associated with it in synthetic organic chemistry, i.e., an atom or group displaceable under substitution reaction conditions.
- leaving groups include halogen, in particular bromo, alkane- or arylenesulfonyloxy, such as methanesulfonyloxy, ethanesulfonyloxy, thiomethyl, benzenesulfonyloxy, tosyloxy, and thienyloxy, dihalophosphinoyloxy, optionally substituted benzyloxy, isopropyloxy, and acyloxy.
- aromatic denotes the conventional idea of aromaticity as defined in the literature, in particular in IUPAC - Compendium of Chemical Terminology, 2nd, A. D. McNaught & A. Wilkinson (Eds). Blackwell Scientific Publications, Oxford (1997).
- pharmaceutically acceptable excipient denotes any ingredient having no therapeutic activity and being non-toxic such as disintegrators, binders, fillers, solvents, buffers, tonicity agents, stabilizers, antioxidants, surfactants or lubricants used in formulating pharmaceutical products.
- the invention also provides pharmaceutical compositions, methods of using, and methods of preparing the aforementioned compounds. All separate embodiments can be combined.
- One embodiment of the invention is a compound of formula I, wherein
- R 1 is selected from the group consisting of
- R 2 is selected from the group consisting of
- R 3 is selected from the group consisting of
- R 4 is selected from the group consisting of
- R 6 is selected from the group consisting of
- C3-6-cycloalkyl substituted by 1-4 substituents individually selected from cyano, cyano-Ci-6-alkyl, halogen, halogen-Ci-6-alkoxy, halogen-Ci-6-alkyl, hydroxy, Ci_ 6-alkoxy, Ci-6-alkoxy-Ci-6-alkyl and Ci-6-alkyl,
- a certain embodiment of this invention provides a compound of formula la as described herein,
- R 1 , R 2 , R 3 , R 4 , R 5 are as defined herein.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 1 is halogen
- R 2 is Ci-e-alkyl
- R 3 is selected from the group consisting of
- R 4 is selected from the group consisting of
- R 6 is selected from the group consisting of
- a certain embodiment of this invention provides a compound as described herein, wherein R 1 is halogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 1 is F.
- a certain embodiment of this invention provides a compound as described herein, wherein R 1 is hydrogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 1 is Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 2 is Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 2 is Me.
- a certain embodiment of this invention provides a compound as described herein, wherein R 2 is hydrogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 2 is halogen-Ci-3-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein A certain embodiment of this invention provides a compound as described herein, wherein
- R 2 is -CH 2 -CH 2 F.
- a certain embodiment of this invention provides a compound as described herein, wherein R 3 is hydrogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 3 is Ci-e-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 4 is halogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 4 is F.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 4 is halogen-Ci-6-alkoxy.
- a certain embodiment of this invention provides a compound as described herein, wherein
- a certain embodiment of this invention provides a compound as described herein, wherein R 4 is Ci-e-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is lH-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 2H-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is furan-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is thiazole-5-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is pyridine-2-yl, lH-pyrazole-3-yl, 2H-pyrazole-3-yl, pyrazine-2-yl, furan-3-yl or thiazole-5- yi.
- R 6 is pyridine-2-yl, lH-pyrazole-3-yl, 2H-pyrazole-3-yl, pyrazine-2-yl, furan-3-yl or thiazole-5- yi.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is heteroaryl substituted by 1-2 substituents individually selected from cyano and halogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 3-chloro-5-cyano-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by 1-2 substituents individually selected from halogen-Ci-6-alkyl and halogen.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 3-fluoro-5-trifluoromethyl-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 3-chloro-5-trifluoromethyl-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 4-chloro-l-(2,2-difluoro-ethyl)-lH-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by 1-2 halogen.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is 5-fluoro-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 3,5-difluoro-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-difluoromethyl-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-chloro-3-fluoro-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 3,5-dichloro-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is 5-chloro-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 2-chloro-thiazole-5-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 4-chloro-lH-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by cyano.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-cyano-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is heteroaryl substituted by halogen-Ci-6-alkoxy.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-fluoromethoxy-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-fluoromethoxy-pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-difluoromethoxy-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-(2,2,2-trifluoro-ethoxy)-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is 5-(2,2,3,3,3-pentafluoro-propoxy)-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-(2,2,3,3-tetrafluoro-propoxy)-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-(2,2-difluoro-ethoxy)-pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 2,5-dimethyl-furan-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is l,5-dimethyl-lH-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by C 3 -6-cycloalkyl-Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-cyclopropyl-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by C 3 -6-cycloalkyl-C 2 -6-alkynyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-cyclopropylethynyl-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is heteroaryl substituted by C 2 -6-alkynyl-Ci-6-alkoxy.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-but-2-ynyloxy-pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by C 3 -6-cycloalkyl-Ci-6-alkoxy.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-cyclopropylmethoxy-pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-cyclopropylmethoxy-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is heteroaryl substituted by halogen-Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 5-difluoromethyl-pyrazine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by halogen-Ci-6-alkyl and Ci-6-alkyl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is 2-methyl-5-trifluoromethyl-2H-pyrazole-3-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by Ci-6-alkoxy.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 6 is 5-methoxy-pyridine-2-yl.
- a certain embodiment of this invention provides a compound as described herein, wherein R 6 is heteroaryl substituted by 1-2 substituents individually selected from cyano, halogen and C 3- 6-cycloalkyl-C2-6-alkynyl.
- R 6 is heteroaryl substituted by 1-2 substituents individually selected from cyano, halogen and C 3- 6-cycloalkyl-C2-6-alkynyl.
- a certain embodiment of this invention provides a compound as described herein, wherein
- R 2 is pyridinyl substituted by 1-2 substituents individually selected from cyano, chloro and cyclopropylethynyl- .
- a certain embodiment of this invention provides a compound as described herein, selected from the group consisting of 5-Chloro-pyridine-2-carboxylic acid [3-((4R,5R)-2-amino-5-fluoro-4-methyl-5,6-dihydro-4H- [ 1 , 3 ]oxazin-4-yl)-4-fluoro-phenyl] -amide,
- a certain embodiment of this invention provides a compound as described herein, selected from the group consisting of
- a certain embodiment of this invention provides a compound as described herein, which is 5-Chloro-pyridine-2-carboxylic acid [3-((4R,5R)-2-amino-5-fluoro-4-methyl-5,6-dihydro-4H- [l,3]oxazin-4-yl)-4-fluoro-phenyl]-amide.
- a certain embodiment of this invention provides a compound as described herein, which is 3 , 5 -Dichloro-pyridine-2-carboxylic acid [3 -((4R, 5R)-2-amino-5 -fluoro-4-methyl-5 , 6-dihydro- 4H- [ 1 , 3 ]oxazin-4-yl)-4-fluoro-phenyl] -amide.
- a certain embodiment of this invention provides a compound as described herein, which is 5-Cyano-pyridine-2-carboxylic acid [3-((4R,5R)-2-amino-5-fluoro-4-methyl-5,6-dihydro-4H- [l,3]oxazin-4-yl)-4-fluoro-phenyl]-amide.
- a certain embodiment of this invention provides a compound as described herein, which is 5-Cyano-pyridine-2-carboxylic acid ⁇ 3-[(4R,5R)-2-amino-4-methyl-5-(2,2,2-trifluoro-ethoxy)- 5 , 6-dihydro-4H- [ 1 , 3 ]oxazin-4-yl] -4-fluoro-phenyl ⁇ -amide.
- a certain embodiment of this invention provides a compound as described herein, which is 5-Cyclopropylethynyl-pyridine-2-carboxylic acid [3-((4R,5R)-2-amino-5-fluoro-4-methyl-5,6- dihydro-4H-[l,3]oxazin-4-yl)-4-fluoro-phenyl]-amide.
- a certain embodiment of this invention provides a compound as described herein, which process comprises reacting a compound of formula C4 to a compound of formula I
- R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are as defined herein.
- a certain embodiment of the invention provides a compound of formula I as described herein, whenever prepared by a process as defined above.
- a certain embodiment of the invention provides a compound of formula I as described herein for use as therapeutically active substance.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as inhibitor of BACE1 and/or BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as inhibitor of BACE1 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as inhibitor of BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as inhibitor of BACE1 and BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of diseases and disorders characterized by elevated ⁇ -amyloid levels and/or ⁇ -amyloid oligomers and/or ⁇ -amyloid plaques and further deposits or Alzheimer's disease.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of Alzheimer's disease.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of Alzheimer's disease, diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use as therapeutically active substance for the therapeutic and/or prophylactic treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma, rheumatoid arthritis, Sjogren syndrome, Spinocerebellar Ataxia 1, Spinocerebellar Ataxia 7, Whipple's Disease or Wilson's Disease.
- a certain embodiment of the invention provides a pharmaceutical composition
- a pharmaceutical composition comprising a compound of formula I as described herein and a pharmaceutically acceptable carrier and/or a pharmaceutically acceptable auxiliary substance.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the use in inhibition of BACEl and/or BACE2 activity.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the use in inhibition of BACEl activity.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the use in inhibition of BACE2 activity.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the use in inhibition of BACE1 and BACE2 activity.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diseases and disorders characterized by elevated ⁇ -amyloid levels and/or ⁇ -amyloid oligomers and/or ⁇ -amyloid plaques and further deposits or Alzheimer's disease.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of Alzheimer's disease.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma,
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of Alzheimer's disease, diabetes or type 2 diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of Alzheimer's disease.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of type 2 diabetes.
- a certain embodiment of the invention provides the use of a compound of formula I as described herein for the manufacture of a medicament for the therapeutic and/or prophylactic treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma, rheumatoid arthritis, Sjogren syndrome, Spinocerebellar Ataxia 1, Spinocerebellar Ataxia 7, Whipple's Disease or Wilson's Disease.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in inhibition of BACE1 and/or BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in inhibition of BACE1 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in inhibition of BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in inhibition of BACE1 and BACE2 activity.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of diseases and disorders characterized by elevated ⁇ -amyloid levels and/or ⁇ -amyloid oligomers and/or ⁇ -amyloid plaques and further deposits or Alzheimer's disease.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of Alzheimer's disease.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of Alzheimer's disease, diabetes or type 2 diabetes.
- a certain embodiment of the invention provides a compound of formula I as described herein for the use in the therapeutic and/or prophylactic treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma, rheumatoid arthritis, Sjogren syndrome, Spinocerebellar Ataxia 1, Spinocerebellar Ataxia 7, Whipple's Disease or Wilson's Disease.
- ALS amyo
- a certain embodiment of the invention provides a method for the use in inhibition of BACEl and/or BACE2 activity, particularly for the therapeutic and/or prophylactic treatment of diseases and disorders characterized by elevated ⁇ -amyloid levels and/or ⁇ -amyloid oligomers and/or ⁇ -amyloid plaques and further deposits, Alzheimer's disease, diabetes or type 2 diabetes, which method comprises administering compound of formula I as described herein to a human being or animal.
- a certain embodiment of the invention provides a method for the use in the therapeutic and/or prophylactic treatment of Alzheimer's disease, diabetes or type 2 diabetes, which method comprises administering a compound of formula I as described herein to a human being or animal.
- a certain embodiment of the invention provides a method for the use in the therapeutic and/or prophylactic treatment of Alzheimer's disease, which method comprises administering a compound of formula I as described herein to a human being or animal.
- a certain embodiment of the invention provides a method for the use in the therapeutic and/or prophylactic treatment of diabetes, which method comprises administering a compound of formula I as described herein to a human being or animal.
- a certain embodiment of the invention provides a method for the use in the therapeutic and/or prophylactic treatment of type 2 diabetes, which method comprises administering a compound of formula I as described herein to a human being or animal.
- a certain embodiment of the invention provides a method for the use in the therapeutic and/or prophylactic treatment of amyotrophic lateral sclerosis (ALS), arterial thrombosis, autoimmune/inflammatory diseases, cancer such as breast cancer, cardiovascular diseases such as myocardial infarction and stroke, dermatomyositis, Down's Syndrome, gastrointestinal diseases, Glioblastoma multiforme, Graves Disease, Huntington's Disease, inclusion body myositis (IBM), inflammatory reactions, Kaposi Sarcoma, Kostmann Disease, lupus erythematosus, macrophagic myofasciitis, juvenile idiopathic arthritis, granulomatous arthritis, malignant melanoma, multiple mieloma, rheumatoid arthritis, Sjogren syndrome, Spinocerebellar Ataxia 1, Spinocerebellar Ataxia 7, Whipple's Disease or Wilson's Disease, which method comprises administering a compound of formula I as described here
- the invention includes all optical isomers, i.e. diastereoisomers, diastereomeric mixtures, racemic mixtures, all their corresponding enantiomers and/or tautomers as well as their solvates of the compounds of formula I.
- the compounds of formula I can contain one or more asymmetric centers and can therefore occur as racemates, racemic mixtures, single enantiomers, diastereomeric mixtures and individual diastereomers. Additional asymmetric centers can be present depending upon the nature of the various substituents on the molecule. Each such asymmetric center will independently produce two optical isomers and it is intended that all of the possible optical isomers and diastereomers in mixtures and as pure or partially purified compounds are included within this invention.
- the present invention is meant to encompass all such isomeric forms of these compounds.
- the independent syntheses of these diastereomers or their chromatographic separations can be achieved as known in the art by appropriate modification of the methodology disclosed herein.
- Their absolute stereochemistry can be determined by the x-ray crystallography of crystalline products or crystalline intermediates which are derivatized, if necessary, with a reagent containing an asymmetric center of known absolute configuration. If desired, racemic mixtures of the compounds can be separated so that the individual enantiomers are isolated. The separation can be carried out by methods well known in the art, such as the coupling of a racemic mixture of compounds to an enantiomerically pure compound to form a diastereomeric mixture, followed by separation of the individual diastereomers by standard methods, such as fractional crystallization or chromatography.
- isomers of a compound of formula I is a compound of formula la or a compound of formulas lb, Ia-I, Ia-II, Ib-I or Ib-II, in particular la, wherein the residues have the meaning as described in any of the embodiments.
- optically pure enantiomer means that the compound contains > 90 % of the desired isomer by weight, pparticularly > 95 % of the desired isomer by weight, or more particularly > 99 % of the desired isomer by weight, said weight percent based upon the total weight of the isomer(s) of the compound.
- Chirally pure or chirally enriched compounds can be prepared by chirally selective synthesis or by separation of enantiomers. The separation of enantiomers can be carried out on the final product or alternatively on a suitable intermediate.
- the compounds of formula I can be prepared in accordance with the following schemes.
- the starting material is commercially available or can be prepared in accordance with known methods. Any previously defined residues and variables will continue to have the previously defined meaning unless otherwise indicated.
- Sulfinyl imines of general formula A2 can be prepared in analogy to T.P. Tang & J.A. Ellman, J. Org. Chem. 1999, 64, 12, by condensation of an aryl ketone Al and a sulfinamide, e.g. an alkyl sulfinamide, most particularly (R)-(+)-tert-butylsulfinamide, in the presence of a Lewis acid such as e.g. a titanium(IV)alkoxide, more particularly titanium(IV)ethoxide in a solvent such as an ether, e.g. diethyl ether or more particularly tetrahydrofuran.
- a Lewis acid such as e.g. a titanium(IV)alkoxide, more particularly titanium(IV)ethoxide in a solvent such as an ether, e.g. diethyl ether or more particularly tetrahydrofuran.
- the conversion of the sulfinyl imine A2 to the sulfinamide ester A3 proceeds stereo selectively by the chiral directing group as described by Tang & Ellman.
- the sulfinyl imine A2 can be reacted in a Reformatsky reaction with a zinc enolate, activated zinc powder at ambient to elevated temperature, particularly at 23 to 60 °C in a solvent such as an ether, e.g. diethyl ether or more particularly tetrahydrofuran.
- the zinc enolate is generated from an alkyl acetate or propionate substituted by halogen, e.g.
- the sulfinyl imine A2 can also be reacted with with an alkyl acetate substituted by a halogen-alkoxy group, like e.g. ethyl 2-(2,2,2-trifluoroethoxy)acetate in presence of a strong base such as n-butyl lithium at 0 to -78 °C in an inert solvent such as an ether, e.g. diethyl ether or more pparticularly tetrahydrofuran.
- a strong base such as n-butyl lithium at 0 to -78 °C
- an inert solvent such as an ether, e.g. diethyl ether or more pparticularly tetrahydrofuran.
- the alcohol of formula A4 can be prepared by the reduction of an ethylester of formula A3 with an alkali hydride, particularly lithium borohydride or lithium aluminium hydride, in a solvent such as an ether, e.g. diethyl ether or more particularly tetrahydrofuran.
- Hydrolysis of the chiral directing group in the sulfinamide alcohol of formula A4 to give the aminoalcohol of formula A5 can be accomplished with a mineral acid, e.g. sulfuric acid or particularly hydrochloric acid, in a solvent such as an ether, e.g. diethyl ether, tetrahydrofuran or more pparticularly 1,4-dioxane.
- the aminooxazine of formula A6 can be prepared by reaction of an aminoalcohol of formula A5 with cyanogen bromide in a solvent such as an alcohol, particularly ethanol.
- the nitro derivative of formula A7 can be prepared by nitration of the oxazine A6, wherein R 7 is hydrogen, following a standard procedure involving neat sulfuric acid and fuming nitric acid without using a solvent.
- the reduction of the nitro group in compounds of formula A7 to give anilines of formula A8 can be accomplished by hydrogenation using a catalyst, such as palladium on carbon, in protic solvents, such as alcohols, in particular ethanol or methanol.
- a catalyst such as palladium on carbon
- protic solvents such as alcohols, in particular ethanol or methanol.
- anilines of formula A8 can be accomplished by hydrogenation using a catalyst, such as palladium on carbon, in protic solvents, such as alcohols, in particular ethanol or methanol.
- a catalyst such as palladium on carbon
- protic solvents such as alcohols, in particular ethanol or methanol.
- Selective reaction of anilines of formula A8 with carboxylic acids of formula R -COOH to give amides of formula I can be effected with 4-(4,6-dimethoxy[1.3.5]triazin-2-yl)-4- methylmorpholinium chloride (DMTMM) hydrate in a solvent such as methanol.
- DTMM 4-(4,6-dimethoxy[1.3.5]triazin-2-yl)-4- methylmorpholinium chloride
- aryl bromides of formula Bl Protection of the amino group in compounds of general formula A6, wherein R 7 is bromine, to produce aryl bromides of formula Bl can be performed with triarylmethyl chlorides, such as triphenylmethyl chloride (Tr-Cl), p-methoxyphenyldiphenylmethyl chloride (MMTr-Cl), di(p- methoxyphenyl)phenylmethyl chloride (DMTr-Cl) or tri(p-methoxyphenyl)methyl chloride (TMTr-Cl), particularly DMTr-Cl, under basic conditions, e.g.
- Tr-Cl triphenylmethyl chloride
- MMTr-Cl p-methoxyphenyldiphenylmethyl chloride
- DMTr-Cl di(p- methoxyphenyl)phenylmethyl chloride
- TMTr-Cl tri(p-methoxyphenyl)methyl chloride
- TMTr-Cl tri(p
- Aryl bromides of formula Bl can be reacted with ammonia equivalents, such as benzophenone imine, in the presence of a suitable transition metal catalyst, such as bis(dibenzylideneacetone)palladium (0) ((dba) 2 Pd) or tris(dibenzylideneacetone)dipalladium (0) ((dba)3Pd 2 )), and a suitable ligand, such as rac-2,2'-bis(diphenylphosphino)-l, l'-binaphthyl (rac- BINAP), 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (X-PHOS) or 2-di-
- a suitable transition metal catalyst such as bis(dibenzylideneacetone)palladium (0) ((dba) 2 Pd) or tris(dibenzylideneacetone)dipalladium (0) ((
- Deprotection of both amino groups in compounds of formula B2 can be achieved by a one-pot procedure by first reacting it with a strong organic acid, such as trifluoroacetic acid, in chlorinated solvents, such as dichloromethane or chloroform, under anhydrous conditions at temperatures between 0 °C and ambient temperature to cleave the P ⁇ group to yield intermediates of formula B3. Then the addition of water to cleave the benzophenone imine and reaction at ambient temperature produces diamines of formula A8.
- a strong organic acid such as trifluoroacetic acid
- chlorinated solvents such as dichloromethane or chloroform
- the protection of the amino group in compounds of formula A7, wherein R 7 is a nitro group, to produce compounds of general formula CI can be performed by reaction with ⁇ -tert- butyl dicarbonate under basic conditions, e.g. in the presence of an amine, such as triethylamine or diisopropylethylamine, in a solvent, such as tetrahydrofuran, at temperatures between 0 °C and ambient temperature and in presence of 4-dimethylamino-pyridine as a catalyst.
- an amine such as triethylamine or diisopropylethylamine
- a solvent such as tetrahydrofuran
- Selective cleavage of one of the tert-butoxy carbonyl groups in compounds of formula CI can be performed by acid, such as trifluoroacetic acid, to produce compounds of formula C2 together with small amounts of compounds of general formula A7.
- the reduction of the nitro group in the protected aminooxazines of formula C2 to the protected anilines of formula C3 can be accomplished by hydrogenation using a catalysts such as palladium on carbon in protic solvents, such as alcohols, in particular ethanol or methanol.
- a catalysts such as palladium on carbon in protic solvents, such as alcohols, in particular ethanol or methanol.
- the cleavage of the protecting tert-butoxy carbonyl group in compounds of formula C4 to produce compounds of formula I can be effected by acid, such as trifluoroacetic acid, in inert solvents, such as dichloromethane, at temperatures between 0 °C and ambient temperature.
- acid such as trifluoroacetic acid
- inert solvents such as dichloromethane
- compounds of formula A6' can be obtained as follows: Selective protection of the primary alcohol in compounds of formula A5 can be performed with chloro-silyl derivatives, such as tert-butyl-chlorodimethyl-silane or tert-butyl-chlorodiphenyl-silyane, under basic conditions, e.g. in the presence of an amine, such as triethylamine or diisopropylethylamine, in a chlorinated solvent, such as dichloromethane or chloroform, at temperatures between 0 °C and ambient temperature and in presence of 4-dimethylamino-pyridine as a catalyst.
- chloro-silyl derivatives such as tert-butyl-chlorodimethyl-silane or tert-butyl-chlorodiphenyl-silyane
- isothiocyanates for the formation of thioureas of formula D2 depends on the reactivity of the amino function.
- benzoyl isocyanate in inert solvents, e.g. acetone, at temperatures between 0 and 100 °C was used to prepare acylated thioureas of formula D2.
- the cyclization to the N-acyl oxazine of formula D3 under the concomitant loss of the silyl protecting group can be achieved by treatment of the acylated thiourea of formula D2 with alkyl oxonium salts, e.g. trimethyloxonium tetrafluoroborate or triethyloxonium tetrafluoroborate in an inert solvent, e.g. in a chlorinated solvent, such as dichloromethane or chloroform, at temperatures between 0 °C and ambient temperature.
- alkyl oxonium salts e.g. trimethyloxonium tetrafluoroborate or triethyloxonium tetrafluoroborate
- an inert solvent e.g. in a chlorinated solvent, such as dichloromethane or chloroform
- imines of formula B3 can be obtained by reaction of aryl bromides of formula D3 with ammonia equivalents, such as benzophenone imine, in the presence of a suitable transition metal catalyst, such as bis(dibenzylideneacetone)palladium (0) ((dba) 2 Pd) or tris(dibenzylideneacetone)dipalladium (0) ((dba)3Pd 2 )), and a suitable ligand, such as rac-2,2'- bis(diphenylphosphino)-l, l'-binaphthyl (rac-BINAP), 2-dicyclohexylphosphino-2',4',6'- triisopropylbiphenyl (X-PHOS) or 2-di-tert-butylphosphino-2',4',6'-triisopropylbiphenyl (t-Bu X- PHOS), in
- the corresponding pharmaceutically acceptable salts with acids can be obtained by standard methods known to the person skilled in the art, e.g. by dissolving the compound of formula I in a suitable solvent such as e.g. dioxane or tetrahydrofuran (THF) and adding an appropriate amount of the corresponding acid.
- a suitable solvent such as e.g. dioxane or tetrahydrofuran (THF)
- THF tetrahydrofuran
- the products can usually be isolated by filtration or by chromatography.
- the conversion of a compound of formula I into a pharmaceutically acceptable salt with a base can be carried out by treatment of such a compound with such a base.
- One possible method to form such a salt is e.g. by addition of 1/n equivalents of a basic salt such as e.g.
- a suitable solvent e.g. ethanol, ethanol-water mixture, tetrahydrofuran- water mixture
- Particular salts are hydrochloride, formate and trifluoroacetate.
- the compounds of formula I as well as all intermediate products can be prepared according to analogous methods or according to the methods set forth herein. Starting materials are commercially available, known in the art or can be prepared by methods known in the art or in analogy thereto. It will be appreciated that the compounds of general formula I in this invention can be derivatised at functional groups to provide derivatives which are capable of conversion back to the parent compound in vivo.
- Cellular ⁇ -lowering assay Human HEK293 cells which are stably transfected with a vector expressing a cDNA of the human APP wt gene (APP695) were used to assess the potency of the compounds in a cellular assay.
- the cells were seeded in 96-well microtiter plates in cell culture medium (Iscove, plus 10% (v/v) fetal bovine serum, glutamine, penicillin/streptomycin) to about 80% confluence and the compounds were added at a lOx concentration in 1/10 volume of medium without FCS containing 8% DMSO (final concentration of DMSO was kept at 0.8% v/v).
- ⁇ 40 concentrations were harvested for the determination of ⁇ 40 concentrations.
- 96well ELISA plates e.g., Nunc MaxiSorb
- monoclonal antibody which specifically recognize the C-terminal end of ⁇ 40 (Brockhaus et al, NeuroReport 9, 1481-1486; 1998).
- the culture supernatants were added in suitable dilutions together with a horseradish peroxidase-coupled ⁇ detection antibody (e.g., antibody 4G8, Senetek, Maryland Heights, MO) and incubated for 5 to 7 hrs.
- a horseradish peroxidase-coupled ⁇ detection antibody e.g., antibody 4G8, Senetek, Maryland Heights, MO
- the assay uses the principle of inhibition of human TMEM27 cleavage by endogenous cellular BACE2 in the Insle rat cell line and shedding from the cell surface into the culture medium, followed by detection in an ELISA assay. Inhibition of BACE2 prevents the cleavage and shedding in a dose-dependent manner.
- the stable cell line "INS-TMEM27” represents an INSle-derived cell line with inducible expression (using the TetOn system) of full-length hTMEM27 in a doxycycline-dependent manner.
- the cells are cultured throughout the experiment in RPMI1640 + Glutamax (Invitrogen) Penicillin/Streptomycin, 10% Fetal bovine serum, 100 mM pyruvate, 5 mM beta- mercatptoethanol, 100 micrograms/ml G418 and 100 microgram/ml hygromycin and are grown inadherent culture at 37 °C in a standard C0 2 cell culture incubator.
- INS-TMEM27 cells are seeded in 96-well plates. After 2 days in culture, BACE2 inhibitor is added in a range of concentrations as required by the assay and after a further two hours, doxycycline is added to a final concentration of 500 ng/ml. The cells are incubated for a further 46 hours and the supernatant harvested for detection of shed TMEM27.
- An ELISA assay (using a pair of mouse anti-human- TMEM27 antibodies, raised against the extracellular domain of TMEM27) is used for detection of TMEM27 in the culture medium.
- An EC 50 for BACE2 inhibition is calculated using the ELISA readout for each inhibitor concentration with standard curve-fitting software such as XLFit for the Excel spreadsheet program.
- the compounds of formula I and the pharmaceutically acceptable salts can be used as therapeutically active substances, e.g. in the form of pharmaceutical preparations.
- the pharmaceutical preparations can be administered orally, e.g. in the form of tablets, coated tablets, dragees, hard and soft gelatin capsules, solutions, emulsions or suspensions.
- the administration can, however, also be effected rectally, e.g. in the form of suppositories, or parenterally, e.g. in the form of injection solutions.
- the compounds of formula I and the pharmaceutically acceptable salts thereof can be processed with pharmaceutically inert, inorganic or organic carriers for the production of pharmaceutical preparations.
- Lactose, corn starch or derivatives thereof, talc, stearic acids or its salts and the like can be used, for example, as such carriers for tablets, coated tablets, dragees and hard gelatin capsules.
- Suitable carriers for soft gelatin capsules are, for example, vegetable oils, waxes, fats, semi-solid and liquid polyols and the like. Depending on the nature of the active substance no carriers are however usually required in the case of soft gelatin capsules.
- Suitable carriers for the production of solutions and syrups are, for example, water, polyols, glycerol, vegetable oil and the like.
- Suitable carriers for suppositories are, for example, natural or hardened oils, waxes, fats, semi-liquid or liquid polyols and the like.
- the pharmaceutical preparations can, moreover, contain pharmaceutically acceptable auxiliary substances such as preservatives, solubilizers, stabilizers, wetting agents, emulsifiers, sweeteners, colorants, flavorants, salts for varying the osmotic pressure, buffers, masking agents or antioxidants. They can also contain still other therapeutically valuable substances.
- Medicaments containing a compound of formula I or a pharmaceutically acceptable salt thereof and a therapeutically inert carrier are also provided by the present invention, as is a process for their production, which comprises bringing one or more compounds of formula I and/or pharmaceutically acceptable salts thereof and, if desired, one or more other therapeutically valuable substances into a galenical administration form together with one or more therapeutically inert carriers.
- the dosage can vary within wide limits and will, of course, have to be adjusted to the individual requirements in each particular case.
- the dosage for adults can vary from about 0.01 mg to about 1000 mg per day of a compound of general formula I or of the corresponding amount of a pharmaceutically acceptable salt thereof.
- the daily dosage can be administered as single dose or in divided doses and, in addition, the upper limit can also be exceeded when this is found to be indicated.
- compositions according to the invention are:
- the compound of formula I, lactose and corn starch are firstly mixed in a mixer and then in a comminuting machine.
- the mixture is returned to the mixer; the talc is added thereto and mixed thoroughly.
- the mixture is filled by machine into suitable capsules, e.g. hard gelatin capsules.
- the compound of formula I is dissolved in a warm melting of the other ingredients and the mixture is filled into soft gelatin capsules of appropriate size.
- the filled soft gelatin capsules are treated according to the usual procedures.
- the suppository mass is melted in a glass or steel vessel, mixed thoroughly and cooled to
- the compound of formula I is mixed with lactose, microcrystalline cellulose and sodium carboxymethyl cellulose and granulated with a mixture of polyvinylpyrrolidone in water.
- the granulate is mixed with magnesium stearate and the flavoring additives and filled into sachets.
- the second fraction contained the slower eluting major isomer (2R,3R)-2-fluoro-3-(2- fluoro-phenyl)-3-((R)-2-methyl-propane-2-sulfinylamino)-butyric acid ethyl ester (intermediate A3.2) as a brown oil.
- MS (ISP): m/z 348.2 [M+H] + .
- reaction mixture was quenched with an aqueous solution of ammonium chloride (13%, 100 ml).
- the precipitate formed was diluted with water and the resulting mixture extracted three times with ethyl acetate.
- the organic layers were washed with brine, then combined, dried and evaporated at reduced pressure.
- the two epimers A4.1 and A4.2 can be obtained by reduction of its mixture as described above followed by separation on chiral HPLC (Chirapak AD) where A4.1 is the second eluting epimer, A4.2 the first eluting epimer.
- a dried tube was charged with a mixture of the amino alcohol A5 (18.8 mmol), cyanogen bromide (33.9 mmol) and ethanol (61 ml). The tube was sealed and heated at 90 °C for 16 hours. For the workup, the reaction mixture was cooled and evaporated at reduced pressure. The residue was partitioned between ethyl acetate (150 ml) and a saturated aqueous solution of sodium carbonate (50 ml). The aqueous layer was separated and re-extracted with ethyl acetate (2 x 50 ml). The organic layers were washed with brine (50 ml), then combined, dried over sodium sulphate and evaporated at reduced pressure. The product was used in the next step without further purification.
- A6M A6'.2 Starting from N-[(4R,5R)- and (4R,5S)-4-(5-bromo-2-fluoro-phenyl)-4-difluoromethyl-5- fluoro-5,6-dihydro-4H-[l,3]oxazin-2-yl]-benzamide (intermediates D3.1 and D3.2) the (4R,5R)- and (4R,5S)-4-(5-bromo-2-fluoro-phenyl)-4-difluoromethyl-5-fluoro-5,6-dihydro-4H- [l,3]oxazin-2-ylamine was obtained as a white crystalline solid.
- MS (ISP): m/z 341.1 [M+H] + , 343.3 [M+2+H] + .
- the aqueous phase was extracted 3 times with dichloromethane, the combined organic layers were washed with brine, dried over sodium sulphate and evaporated.
- the residue was purified by chromatography on silica- L (Telos Flash NFL) using a gradient of heptane and ethyl acetate as the eluent.
- the tube was sealed and heated to 105 °C for 60 hours.
- the mixture was cooled to 22 °C, evaporated at reduced pressure and purified by chromatography on an amine phase (Telos Flash H 2 ) using a gradient of heptane and ethyl acetate as the eluent.
- reaction mixture was extracted with a saturated solution of sodium hydrogencarbonate (40 ml), water (40 ml) and brine (40 ml).
- the aqueous hydrogencarbonate solution was extracted with dichloromethane, then the organic layers were combined, dried over sodium sulphate and evaporated.
- MS (ISP): m/z 623.0 [M+H] + and 625.1 [M+2+H] + .
- reaction mixture was stirred at 0 °C for 40 minutes, then for 3 hours at room temperature.
- another equivalent of trimethyloxonium tetrafluoroborate (557 mg, 3.58 mmol) was added and stirring continued overnight.
- reaction mixture was poured into a solution of sodium carbonate (1M) followed by the extraction with dichloromethane.
- the organic layer was separated, washed with brine and dried over sodium sulphate. Removal of the solvent at reduced pressure left a light brown oil which was purified by chromatography on silica gel using a mixture of dichloromethane and methanol (0-10%) to give the pure amides of formula I.
- the 5-difluoromethyl-pyridine-2-carboxylic acid (CAS 859538-41-3) was obtained starting from 5-methyl-pyridine-2-carboxylic acid in close analogy to the preparation of the corresponding 5-difluoromethyl-pyrazine-2-carboxylic acid as described in US2009209757.
- the 5-cyclopropylmethoxy-pyrazine-2-carboxylic acid was obtained following the general procedure below:
- the 5-(2,2,2-trifluoro-ethoxy)-pyridine-2-carboxylic acid was obtained as follows: a) 5-(2,2,2-Trifluoro-ethoxy)-pyridine-2-carboxylic acid methyl ester Under an atmosphere of nitrogen a solution of 5-hydroxy-pyridine-2-carboxylic acid methyl ester (200 mg, 1.31 mmol) in N,N-dimethylformamid (2 ml) was treated at room temperature with sodium hydride (55% dispersion in oil, 64 mg).
- the 5-cyclopropylmethoxy-pyridine-2-carboxylic acid was prepared in a manner analogous to that described for the preparation of 5-cyclopropylmethoxy-pyrazine-2-carboxylic acid (Example 16) at 100 °C for 90 minutes in a microwave oven.
- the 5-cyclopropylmethoxy- pyridine-2-carboxylic acid (25% yield) was obtained as an off-white solid.
- MS (ISP): m/z 194.0 [M+H] + .
- the 5-(2,2,3,3-tetrafluoro-propoxy)-pyridine-2-carboxylic acid was prepared as follows: a) 5-(2,2,3,3-Tetrafluoro-propoxy)-pyridine-2-carboxylic acid methyl ester
- the 5-(2,2,3,3,3-pentafluoro-propoxy)-pyridine-2-carboxylic acid was obtained as follows: a) In a manner analogous to that described in example 24 a), the alkylation of the 5- hydroxy-pyridine-2-carboxylic acid methyl ester with potassium carbonate and trifluoro- methanesulphonic acid 2,2,3,3,3-pentafluoropropyl ester yielded the 5-(2,2,3,3,3-pentafluoro- propoxy)-pyridine-2-carboxylic acid methyl ester as a light yellow oil.
- MS (ISP): m/z 285 [M] + .
- the 3-(2,2,2-trifluoro-ethoxy)-pyridine-2-carboxylic acid was prepared as follows: a) To a solution of 3-hydroxy-pyridine-2-carboxylic acid methyl ester (200 mg, 1.3 mmol) in N,N-dimethylformamide (2.0 ml) was added at 22 °C sodium hydride (55% in oil, 64 mg) and stirring was continued until gas evolution ceased. The suspension was cooled to 0 °C and treated with trifluoroethyl trifluormethanesulfonate (728 mg) and stirring was continued at 22 °C for 2 hours.
- the 4-chloro-l-difluoromethyl-lH-pyrazole-3 -carboxylic acid was obtained as follows: a) l-Difluoromethyl-lH-pyrazole-3 -carboxylic acid methyl ester A solution of l-difluoromethyl-lH-pyrazole-3-carboxylic acid (CAS925179-02-8) (500 mg, 3.1 mmol) in methanol (18 ml) was cooled to 0 °C and treated with sulphuric acid (98%, 0.2 ml, 3. Immol). The mixture was heated to reflux for 2 hours. For the workup, the solution was cooled and concentrated at reduced pressure.
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Priority Applications (12)
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CA2832467A CA2832467A1 (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
EA201391468A EA201391468A1 (en) | 2011-04-11 | 2012-04-10 | 1,3-oxazines as BACE1 and / or Bace2 inhibitors |
NZ614545A NZ614545B2 (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
JP2014504274A JP5721157B2 (en) | 2011-04-11 | 2012-04-10 | 1,3-Oxazines as BACE1 and / or BACE2 inhibitors |
MX2013010795A MX2013010795A (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors. |
SG2013071139A SG193929A1 (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
EP12712669.6A EP2697208A1 (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
AU2012241955A AU2012241955A1 (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as BACE1 and/or BACE2 inhibitors |
KR1020137029827A KR20140002039A (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
CN201280017754.7A CN103502227A (en) | 2011-04-11 | 2012-04-10 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
IL228104A IL228104A0 (en) | 2011-04-11 | 2013-08-22 | 1,3 oxazines as bace1 and/or bace2 inhibitors |
MA36414A MA35114B1 (en) | 2011-04-11 | 2013-11-11 | 1,3-oxazines as inhibitors of bace1 and / or bace2 |
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US8563543B2 (en) | 2009-10-08 | 2013-10-22 | Merck Sharp & Dohme Corp. | Iminothiadiazine dioxide compounds as bace inhibitors, compositions, and their use |
US8569310B2 (en) | 2009-10-08 | 2013-10-29 | Merck Sharp & Dohme Corp. | Pentafluorosulfur imino heterocyclic compounds as BACE-1 inhibitors, compositions and their use |
US8637504B2 (en) | 2008-06-13 | 2014-01-28 | Shionogi & Co., Ltd. | Sulfur-containing heterocyclic derivative having beta secretase inhibitory activity |
US8653067B2 (en) | 2007-04-24 | 2014-02-18 | Shionogi & Co., Ltd. | Pharmaceutical composition for treating Alzheimer's disease |
US8703785B2 (en) | 2008-10-22 | 2014-04-22 | Shionogi & Co., Ltd. | 2-aminopyrimidin-4-one and 2-aminopyridine derivatives both having BACE1-inhibiting activity |
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US10603310B2 (en) | 2014-11-10 | 2020-03-31 | H. Lundbeck A/S | 2-amino-6-(difluoromethyl)-5,5-difluoro-6-phenyl-3,4,5,6-tetrahydropyridines as BACE1 inhibitors |
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WO2016150785A1 (en) | 2015-03-20 | 2016-09-29 | F. Hoffmann-La Roche Ag | Bace1 inhibitors |
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KR20140002039A (en) | 2014-01-07 |
CN103502227A (en) | 2014-01-08 |
EA201391468A1 (en) | 2014-04-30 |
CL2013002871A1 (en) | 2014-05-09 |
US8754075B2 (en) | 2014-06-17 |
US9115098B2 (en) | 2015-08-25 |
JP5721157B2 (en) | 2015-05-20 |
MX2013010795A (en) | 2013-12-06 |
CO7071122A2 (en) | 2014-09-30 |
CA2832467A1 (en) | 2012-10-18 |
CR20130432A (en) | 2013-12-09 |
US20140243325A1 (en) | 2014-08-28 |
JP2014510769A (en) | 2014-05-01 |
NZ614545A (en) | 2014-10-31 |
IL228104A0 (en) | 2013-09-30 |
ECSP13012967A (en) | 2013-11-29 |
PE20141004A1 (en) | 2014-08-27 |
US20120258962A1 (en) | 2012-10-11 |
EP2697208A1 (en) | 2014-02-19 |
AU2012241955A1 (en) | 2013-09-12 |
MA35114B1 (en) | 2014-05-02 |
SG193929A1 (en) | 2013-11-29 |
US20150322054A1 (en) | 2015-11-12 |
AR085960A1 (en) | 2013-11-06 |
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