EP1430052A2 - SUBSTITUIERTE IMIDAZO 1, 2−A −5&comm a; 6, 7, 8− TETRAHYDROPYRIDIN−8−ONE, VERFAHREN ZU IHRER HERSTELLUNG, SOWIE DEREN VERWENDUNG ZUR HERSTELLUNG VON IMIDAZO 1, 2−A PY RIDINEN - Google Patents
SUBSTITUIERTE IMIDAZO 1, 2−A −5&comm a; 6, 7, 8− TETRAHYDROPYRIDIN−8−ONE, VERFAHREN ZU IHRER HERSTELLUNG, SOWIE DEREN VERWENDUNG ZUR HERSTELLUNG VON IMIDAZO 1, 2−A PY RIDINENInfo
- Publication number
- EP1430052A2 EP1430052A2 EP02776963A EP02776963A EP1430052A2 EP 1430052 A2 EP1430052 A2 EP 1430052A2 EP 02776963 A EP02776963 A EP 02776963A EP 02776963 A EP02776963 A EP 02776963A EP 1430052 A2 EP1430052 A2 EP 1430052A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkyl
- imidazo
- group
- amino
- tetrahydropyridin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 150000003222 pyridines Chemical class 0.000 title description 3
- 150000005234 imidazo[1,2-a]pyridines Chemical class 0.000 claims abstract description 14
- UTCSSFWDNNEEBH-UHFFFAOYSA-N imidazo[1,2-a]pyridine Chemical compound C1=CC=CC2=NC=CN21 UTCSSFWDNNEEBH-UHFFFAOYSA-N 0.000 claims abstract description 10
- -1 hydroxy, cyano, isocyano, thiocyano, amino Chemical group 0.000 claims description 103
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 80
- 238000006243 chemical reaction Methods 0.000 claims description 56
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 38
- 238000002360 preparation method Methods 0.000 claims description 32
- 239000001257 hydrogen Substances 0.000 claims description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims description 29
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 24
- 150000002431 hydrogen Chemical class 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 17
- 229910052736 halogen Inorganic materials 0.000 claims description 15
- 150000002367 halogens Chemical class 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- 125000001424 substituent group Chemical group 0.000 claims description 14
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 13
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 125000003545 alkoxy group Chemical group 0.000 claims description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 10
- 239000011541 reaction mixture Substances 0.000 claims description 10
- 238000006467 substitution reaction Methods 0.000 claims description 10
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 claims description 9
- 125000001072 heteroaryl group Chemical group 0.000 claims description 9
- 150000003254 radicals Chemical class 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 125000004448 alkyl carbonyl group Chemical group 0.000 claims description 8
- 229940124530 sulfonamide Drugs 0.000 claims description 8
- YROXIXLRRCOBKF-UHFFFAOYSA-N sulfonylurea Chemical class OC(=N)N=S(=O)=O YROXIXLRRCOBKF-UHFFFAOYSA-N 0.000 claims description 8
- 125000005157 alkyl carboxy group Chemical group 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 150000003456 sulfonamides Chemical class 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 229940100389 Sulfonylurea Drugs 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 6
- 125000004043 oxo group Chemical group O=* 0.000 claims description 6
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 5
- 125000004446 heteroarylalkyl group Chemical group 0.000 claims description 5
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 claims description 5
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 5
- 125000000018 nitroso group Chemical group N(=O)* 0.000 claims description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 4
- 125000005133 alkynyloxy group Chemical group 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 125000006125 ethylsulfonyl group Chemical group 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 4
- 125000006017 1-propenyl group Chemical group 0.000 claims description 3
- 125000000530 1-propynyl group Chemical group [H]C([H])([H])C#C* 0.000 claims description 3
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 claims description 3
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 claims description 3
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 claims description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 3
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 claims description 3
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 claims description 3
- 125000000304 alkynyl group Chemical group 0.000 claims description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 3
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 claims description 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 claims description 3
- 125000006124 n-propyl sulfonyl group Chemical group 0.000 claims description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- BNOVYBVKWYHEMQ-UHFFFAOYSA-N (4,6-dimethoxypyrimidin-2-yl)urea Chemical compound COC1=CC(OC)=NC(NC(N)=O)=N1 BNOVYBVKWYHEMQ-UHFFFAOYSA-N 0.000 claims description 2
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 claims description 2
- 125000003320 C2-C6 alkenyloxy group Chemical group 0.000 claims description 2
- 125000004466 alkoxycarbonylamino group Chemical group 0.000 claims description 2
- 125000004390 alkyl sulfonyl group Chemical group 0.000 claims description 2
- 125000002078 anthracen-1-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([*])=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 claims description 2
- 125000000748 anthracen-2-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([H])=C([*])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- 125000005023 xylyl group Chemical group 0.000 claims description 2
- 125000004093 cyano group Chemical group *C#N 0.000 claims 2
- JWZZKOKVBUJMES-UHFFFAOYSA-N (+-)-Isoprenaline Chemical compound CC(C)NCC(O)C1=CC=C(O)C(O)=C1 JWZZKOKVBUJMES-UHFFFAOYSA-N 0.000 claims 1
- 101000926325 Phacoides pectinatus Hemoglobin-3 Proteins 0.000 claims 1
- 125000001153 fluoro group Chemical group F* 0.000 claims 1
- 125000003784 fluoroethyl group Chemical group [H]C([H])(F)C([H])([H])* 0.000 claims 1
- 125000004216 fluoromethyl group Chemical group [H]C([H])(F)* 0.000 claims 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 claims 1
- 125000005031 thiocyano group Chemical group S(C#N)* 0.000 claims 1
- 150000002460 imidazoles Chemical class 0.000 abstract description 9
- 238000005899 aromatization reaction Methods 0.000 description 28
- 150000001875 compounds Chemical class 0.000 description 23
- 230000001590 oxidative effect Effects 0.000 description 21
- 239000000047 product Substances 0.000 description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 230000004048 modification Effects 0.000 description 17
- 238000012986 modification Methods 0.000 description 17
- XLSZMDLNRCVEIJ-UHFFFAOYSA-N 4-methylimidazole Chemical compound CC1=CNC=N1 XLSZMDLNRCVEIJ-UHFFFAOYSA-N 0.000 description 16
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 239000007858 starting material Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 7
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 7
- 229930188620 butyrolactone Natural products 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000012065 filter cake Substances 0.000 description 6
- QGLBZNZGBLRJGS-UHFFFAOYSA-N Dihydro-3-methyl-2(3H)-furanone Chemical compound CC1CCOC1=O QGLBZNZGBLRJGS-UHFFFAOYSA-N 0.000 description 5
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 5
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 5
- BOUNFBOFBGBYBT-UHFFFAOYSA-N purin-8-one Chemical compound C1=NC=NC2=NC(=O)N=C21 BOUNFBOFBGBYBT-UHFFFAOYSA-N 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- ZQEXIXXJFSQPNA-UHFFFAOYSA-N 1h-imidazole-5-carbaldehyde Chemical compound O=CC1=CNC=N1 ZQEXIXXJFSQPNA-UHFFFAOYSA-N 0.000 description 4
- XVZKKIYWHYCKLD-UHFFFAOYSA-N 5-methyl-1h-imidazol-4-amine Chemical compound CC=1NC=NC=1N XVZKKIYWHYCKLD-UHFFFAOYSA-N 0.000 description 4
- NAGRVUXEKKZNHT-UHFFFAOYSA-N Imazosulfuron Chemical compound COC1=CC(OC)=NC(NC(=O)NS(=O)(=O)C=2N3C=CC=CC3=NC=2Cl)=N1 NAGRVUXEKKZNHT-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 4
- SERHXTVXHNVDKA-UHFFFAOYSA-N pantolactone Chemical compound CC1(C)COC(=O)C1O SERHXTVXHNVDKA-UHFFFAOYSA-N 0.000 description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- ZAFYATHCZYHLPB-UHFFFAOYSA-N zolpidem Chemical compound N1=C2C=CC(C)=CN2C(CC(=O)N(C)C)=C1C1=CC=C(C)C=C1 ZAFYATHCZYHLPB-UHFFFAOYSA-N 0.000 description 4
- RBSXHDIPCIWOMG-UHFFFAOYSA-N 1-(4,6-dimethoxypyrimidin-2-yl)-3-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-yl)sulfonylurea Chemical compound CCS(=O)(=O)C=1N=C2C=CC=CN2C=1S(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 RBSXHDIPCIWOMG-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- GSLDEZOOOSBFGP-UHFFFAOYSA-N alpha-methylene gamma-butyrolactone Chemical compound C=C1CCOC1=O GSLDEZOOOSBFGP-UHFFFAOYSA-N 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 3
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 3
- VMMKGHQPQIEGSQ-UHFFFAOYSA-N minodronic acid Chemical compound C1=CC=CN2C(CC(O)(P(O)(O)=O)P(O)(O)=O)=CN=C21 VMMKGHQPQIEGSQ-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- VSLIUWLPFRVCDL-UHFFFAOYSA-N zolimidine Chemical compound C1=CC(S(=O)(=O)C)=CC=C1C1=CN(C=CC=C2)C2=N1 VSLIUWLPFRVCDL-UHFFFAOYSA-N 0.000 description 3
- AXJZCJSXNZZMDU-UHFFFAOYSA-N (5-methyl-1h-imidazol-4-yl)methanol Chemical compound CC=1N=CNC=1CO AXJZCJSXNZZMDU-UHFFFAOYSA-N 0.000 description 2
- LBOZSXSPRGACHC-NFOZGECASA-L (e)-bis(3-methyl-2-phenylimidazo[1,2-a]pyridin-4-ium-1-yl)diazene;dibromide Chemical compound [Br-].[Br-].C=1C=CC=CC=1C1=C(C)[N+]2=CC=CC=C2N1/N=N/N1C2=CC=CC=[N+]2C(C)=C1C1=CC=CC=C1 LBOZSXSPRGACHC-NFOZGECASA-L 0.000 description 2
- MXBVNILGVJVVMH-UHFFFAOYSA-N 1,7-naphthyridine Chemical compound C1=NC=CC2=CC=CN=C21 MXBVNILGVJVVMH-UHFFFAOYSA-N 0.000 description 2
- PUBXZRMOSMSIJC-UHFFFAOYSA-N 1-(4,6-dimethoxypyrimidin-2-yl)-3-sulfonylurea Chemical compound COC1=CC(OC)=NC(NC(=O)N=S(=O)=O)=N1 PUBXZRMOSMSIJC-UHFFFAOYSA-N 0.000 description 2
- DRTQHJPVMGBUCF-UCVXFZOQSA-N 1-[(2s,3s,4s,5s)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione Chemical compound O[C@H]1[C@H](O)[C@H](CO)O[C@@H]1N1C(=O)NC(=O)C=C1 DRTQHJPVMGBUCF-UCVXFZOQSA-N 0.000 description 2
- HZNVUJQVZSTENZ-UHFFFAOYSA-N 2,3-dichloro-5,6-dicyano-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(C#N)=C(C#N)C1=O HZNVUJQVZSTENZ-UHFFFAOYSA-N 0.000 description 2
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical compound CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 description 2
- KMWCSNCNHSEXIF-UHFFFAOYSA-N 5-methyl-1h-imidazole-4-carbaldehyde Chemical compound CC=1N=CNC=1C=O KMWCSNCNHSEXIF-UHFFFAOYSA-N 0.000 description 2
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 2
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 description 2
- MJQGWRVDIFBMNW-UHFFFAOYSA-N Ethyl 5-oxotetrahydro-2-furancarboxylate Chemical compound CCOC(=O)C1CCC(=O)O1 MJQGWRVDIFBMNW-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 208000018522 Gastrointestinal disease Diseases 0.000 description 2
- NTYJJOPFIAHURM-UHFFFAOYSA-N Histamine Chemical compound NCCC1=CN=CN1 NTYJJOPFIAHURM-UHFFFAOYSA-N 0.000 description 2
- 239000005567 Imazosulfuron Substances 0.000 description 2
- QJPWUUJVYOJNMH-VKHMYHEASA-N L-homoserine lactone Chemical compound N[C@H]1CCOC1=O QJPWUUJVYOJNMH-VKHMYHEASA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 238000007126 N-alkylation reaction Methods 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 208000007107 Stomach Ulcer Diseases 0.000 description 2
- 239000005619 Sulfosulfuron Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical class C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- JRTIDHTUMYMPRU-UHFFFAOYSA-N alpidem Chemical compound N1=C2C=CC(Cl)=CN2C(CC(=O)N(CCC)CCC)=C1C1=CC=C(Cl)C=C1 JRTIDHTUMYMPRU-UHFFFAOYSA-N 0.000 description 2
- 229950008673 alpidem Drugs 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- AGEZXYOZHKGVCM-UHFFFAOYSA-N benzyl bromide Chemical compound BrCC1=CC=CC=C1 AGEZXYOZHKGVCM-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 125000002619 bicyclic group Chemical group 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001212 derivatisation Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 2
- JBFHTYHTHYHCDJ-UHFFFAOYSA-N gamma-caprolactone Chemical compound CCC1CCC(=O)O1 JBFHTYHTHYHCDJ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229920005555 halobutyl Polymers 0.000 description 2
- 125000004969 haloethyl group Chemical group 0.000 description 2
- 125000004970 halomethyl group Chemical group 0.000 description 2
- PRJKNHOMHKJCEJ-UHFFFAOYSA-N imidazol-4-ylacetic acid Chemical compound OC(=O)CC1=CN=CN1 PRJKNHOMHKJCEJ-UHFFFAOYSA-N 0.000 description 2
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 2
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 2
- 229950011129 minodronic acid Drugs 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000002777 nucleoside Substances 0.000 description 2
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- 229930014626 natural product Natural products 0.000 description 1
- WSGCRAOTEDLMFQ-UHFFFAOYSA-N nonan-5-one Chemical compound CCCCC(=O)CCCC WSGCRAOTEDLMFQ-UHFFFAOYSA-N 0.000 description 1
- 229940127073 nucleoside analogue Drugs 0.000 description 1
- 229950005421 olprinone Drugs 0.000 description 1
- 238000011275 oncology therapy Methods 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
- SIEVQTNTRMBCHO-UHFFFAOYSA-N pantolactone Natural products CC1(C)OC(=O)CC1O SIEVQTNTRMBCHO-UHFFFAOYSA-N 0.000 description 1
- 229940115458 pantolactone Drugs 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 239000002571 phosphodiesterase inhibitor Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000006233 propoxy propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])OC([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000006225 propoxyethyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 1
- 125000005767 propoxymethyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])[#8]C([H])([H])* 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- WJKIGWPCVFLGAT-UHFFFAOYSA-N pyridine;dihydrobromide Chemical compound [Br-].[Br-].C1=CC=[NH+]C=C1.C1=CC=[NH+]C=C1 WJKIGWPCVFLGAT-UHFFFAOYSA-N 0.000 description 1
- 239000002464 receptor antagonist Substances 0.000 description 1
- 229940044551 receptor antagonist Drugs 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006798 ring closing metathesis reaction Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003419 tautomerization reaction Methods 0.000 description 1
- 125000001981 tert-butyldimethylsilyl group Chemical group [H]C([H])([H])[Si]([H])(C([H])([H])[H])[*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005931 tert-butyloxycarbonyl group Chemical group [H]C([H])([H])C(OC(*)=O)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000007970 thio esters Chemical class 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 238000004857 zone melting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
- C07D471/14—Ortho-condensed systems
Definitions
- the invention relates to substituted imidazo [1,2-a] -5,6,7, 8-tetrahydropyridin-8-ones, processes for their preparation and their use for the preparation of imidazo [1,2-a] pyridines.
- Imidazo [1,2-a] pyridines represent an economically extremely interesting class of compounds in the field of pharmaceuticals, crop protection agents and cosmetics.
- Imidazo [1,2-a] pyridines are mainly used for the prevention and treatment of various diseases, such as gastrointestinal diseases, cancer or diseases of the central nervous system.
- diseases such as gastrointestinal diseases, cancer or diseases of the central nervous system.
- the preparation and use of such compounds is described.
- gastrointestinal diseases such as gastric ulcers (Kaminski JJ et al.
- Solimidine® (Zolimidine ® also Zoliridine ®; 2 [4-methyl sulfonyDphenyl] imidazo [1,2-a] pyridine) to call.
- kardiotoni- ULTRASONIC drug is also of the cAMP phosphodiesterase inhibitor oprinone® to call (Olprinone ®, 1,2-dihydro-5-imidazo [1, 2-a] - pyridin-6-yl-6-methyl-2-oxo-3 -pyridine carbonitrile).
- Imidazo [1, 2-a] pyridines are also used in non-benzodiazepine hypnotics such as zolpidem (N, N, 6-trimethyl-2-p-tolyl-imidazo [1,2a] -pyridine-3-acetamide).
- zolpidem N, N, 6-trimethyl-2-p-tolyl-imidazo [1,2a] -pyridine-3-acetamide.
- curare mimetic is further Fazadinium- bromide to give (Fazadon ®; 1, l'-azobis [3-methyl-2-phenyl-imidazo [1,2-a] pyridiniumdibromid).
- Alpidem® is also known as an anxiolytic (Ananxyl®, 6-chloro-2- (4-chlorophenyl) - N, N-dipropyl-imidazo [1,2-a] yridine-3-acetamide).
- Minodronic Acid (YM-529) is evaluated in clinical studies (1-hydroxy-2-imidazo [1, 2-a] pyridin-3-ylethylidene bisphosphonic acid).
- imidazo [1, 2a] pyridines are in clinical trials as promising bradikinin (BK) B2 receptor antagonists (8- [[3- (N-acylglycl-N-methylamino) -2, 6-dichlorobenzyl] oxy] 3- halo-2-methylimidazo- [1, 2-a] pyridines; Abe Y et al. (1998) J Med Chem 41: 564-578).
- imidazo [1,2a] pyridines also go into nucleoside analogues which are used as antiviral therapeutics or in cancer therapy (chemotherapy) (Pan SF et al. (1998) Tetrahedron Letters 39: 8191-8194).
- interleukin-6 inhibitors for example 2,3,7,8-tetrahydro-4-aryl-1H-cyclopent [e] imidazo [1,2-a] - pyridine-5 (6H) - on; Tagat J et al. (1995) Bioorg. Med. Chem. Lett. 5 (18): 2143-2146).
- Imidazo [1,2-a] pyridines are used in cosmetics, for example, as coupling components in oxidative hair colorants (EP 0 930 062).
- Imidazo [1,2-a] pyridines are also interesting building blocks in crop protection products.
- Herbicides such as sulfosulfuron ® (Maverick ®, 1- (2-ethylsulphonyl-imidazo [l, 2-a] pyridin-3-yl-sulfonyl) -3- (4,6-demethoxypyrimidin-2-yl) -harnstof) or imazosulfuron ® (Takeoff ® , 1- (2-chloro-imidazo [1,2-a] pyridin-3-yl-sulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea) include this grouping.
- WO 98/42707 outlines the preparation of pharmaceuticals based on imidazo- [1,2a] -tetrahydropyridin-8-ones in the context of a hypothetical synthesis process (p. 16 / scheme 8). However, the application does not contain any technical teaching on how these connections are technically accessible.
- the task was to provide new starting materials and processes for the preparation of imidazo [1,2a] pyridines.
- a first object of the invention relates to processes for the preparation of imidazo- [1, 2a] -5, 6, 7, 8-tetrahydropyridin-8-ones, characterized in that
- the reaction can take place thermally at temperatures above 100 ° C., preferably at temperatures from 100 to 300 ° C., particularly preferably at temperatures from 150 to 250 ° C., very particularly preferably at temperatures from 190 to 220 ° C.
- the reaction can be carried out without any additional activation or else by activation by adding bases, acids or catalysts.
- the activation is preferably base-catalyzed.
- Preferred bases are potassium carbonate, cesium carbonate, sodium hydroxide, potassium hydroxide, DBU (1,5-diaza-bicyclo [5.4.0] undecylene-5), trialkylamines, LDA (lithium diisopropyl amide) and Hunig base (diisopropylethylamine).
- the reaction of the imidazoles can be carried out with equimolar amounts of butyrolactone or an excess of one of the two starting materials - imidazole or ⁇ -butyrolactone.
- the excess can be at least 20 mol%, preferably at least 50 mol%, particularly preferably at least 100 mol%, very particularly preferably at least 500 mol%.
- the preferred range of excess is between 300 mol% and 500 mol%.
- the reaction is preferably carried out with an excess of ⁇ -butyrolactone, which simultaneously serves as a solvent and for trapping the water of reaction.
- the excess ⁇ -butyrolactone can possibly be partially or completely distilled off together with the water of reaction formed during or after the reaction.
- the isolated yield can be increased if part of the butyrolactone is distilled off during or after the reaction.
- solvents such as, for example, toluene or xylene
- toluene or xylene can be added to the reaction mixture, which, for example in the function of a tractor, promote the removal of the water of reaction.
- the reaction can be carried out at normal pressure, elevated or reduced pressure.
- the pressure can be kept constant during the reaction or else can be modulated, for example for the purpose of distilling off a solvent.
- the reaction is preferably carried out at normal pressure.
- the response time depends on the speed of implementation. For example, it can be approximately 12 hours.
- imidazo- [1,2a] -5, 6,7, 8-tetrahydropyridin-8-one can then be precipitated, for example, by cooling the batch and separated by solid / liquid separation (“suction”).
- the invention 6 7 relates to methods for the preparation of imidazo [1,2-a] -5, 8-tetrahydro- pyridin-8-ones of the formula Ia or Ib, "characterized in that
- Suitable substituents on the imidazole and / or butyrolactone which are used in the process according to the invention are preferably those which meet the conditions of the invention
- Educts are preferably used which decompose under the reaction conditions by a maximum of 50%, preferably a maximum of 20%, particularly preferably a maximum of 10%.
- the starting materials or individual substituents thereof used in the process according to the invention can be derivatized for the period of the reaction in the manner familiar to those skilled in the art or modified by known protective groups in order to improve the stability of the compounds under the conditions of the process according to the invention to increase.
- Preferred derivatization or modification methods are oxidation, reduction, 0-, S- or N-alkylation or acylation, such as esterification, etherification or acetal formation.
- hydroxyl groups can be protected by introducing protective groups such as trityl, tert-butyldimethylsilyl, tert-butyloxycarbonyl (BOC), THP ether or benzyl groups.
- Carbonyl groups can be protected by acetal formation.
- Thiols as thioesters or thioethers; Amines as carbamates, " amides or benzylamines.
- the invention further relates to substituted imidazo- [1,2a] - 5,6, 7, 8-tetrahydropyridin-8-one described by the general formula Ia or Ib or salts thereof with the proviso that
- Rl, R2 and all radicals R3 do not simultaneously represent hydrogen, or
- R1, R2 or each R3 can in each case and independently of one another be selected from the group consisting of hydrogen, halogen, hydroxy, cyano, isocyano, thiocyano, amino, nitroso, nitro, carbonyl, alkylcarbonyl, sulfonate, alkylsulfonyl, sulfonamide, Sulfonylurea, carboxyl, alkylcarboxyl, substituted or unsubstituted, branched or unbranched or cyclic alkyl, alkenyl, alkynyl, substituted or unsubstituted aryl or heteroaryl.
- R 1, R 2 or each R 3 are in each case selected independently and independently of one another from the group consisting of hydrogen, hydroxyl, halogen, cyano, thiocyanato, branched or unbranched, optionally substituted C ⁇ -C 6 -alkyl, ' C 2 -C 6 -Alkenyl, C -C 6 -alkynyl, C 3 -C -cycloalkyl, C 3 -C 6 -alkadienyl, hydroxy-Ci-Cg-alkyl, halo -CC-C 6 alkyl, Ci-C ⁇ -alkoxy, C 2 -C 6 -alkenyl-oxy, C -C 6 -alkynyloxy, Ci-Cg-alkyl-oxy-Ci-Cg-alkyl, Ci-C ⁇ -alkyl-oxy-C 2 -C 6 -alkenyl, C ⁇ -C 6 - Alkyl-oxy-C 2 -C 6
- R1 and R2 can preferably also form a ring system together, so that a bicyclic imidazole is used and a tricyclic imidazo- [1, 2a] -5, 6, 7, 8-tetrahydropyridin-8-one is obtained.
- one of the starting materials used contains a chirality center
- one of the two enantiomers is preferably used in the reaction.
- the halogen is fluorine
- b) -C 6 alkyl is selected from the group consisting of methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, 1-methyl-propyl, 2nd -Methyl-propyl, n-pentyl, iso-pentyl, n-hexyl and iso-hexyl. Most preferred are methyl, ethyl, n-propyl and iso-propyl.
- C 2 -C 6 alkenyl is selected from the group consisting of ethenyl, 1-propenyl, 2-propenyl, n-1- (or 2 or 3) -butenyl, iso-butenyl, nl- (or 2 or 3 or 4) pentenyl, iso-pentenyl, n-1- (or 2 or 3 or 3 or 5) -hexenyl and iso-hexenyl. Most preferred are ethenyl, 1-propenyl and 2-propenyl.
- C 3 -C 6 alkadienyl is selected from the group consisting of 1,2-propadienyl, n-butadien-1, 3-yl, n-butadien-l, 2-yl, n-butadiene-2,3 -yl, iso-butadienyl, n-pentadienyl, iso-pentadienyl, n-hexadienyl and iso-hexadienyl. Most preferred are 1,2-propadienyl and n-butadien-1,3-yl.
- C -C 6 -alkynyl is selected from the group consisting of ethynyl, 1-propynyl, 2-propynyl, n-butyn-1-yl, n-butyn-2-yl, n-butyn-3-yl, l -Methyl-propin-2-yl, n-pentyn-1-yl, isopentinyl, n-hexynyl, iso-hexynyl Most preferred are ethynyl, 1-propynyl and 2-propynyl.
- C 3 -C -cycloalkyl is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cyclohexyl.
- R1 and R2 can preferably also form a ring system together, so that a bicyclic imidazole is used and a tricyclic imidazo- [1, 2a] -5, 6, 7, 8-tetrahydropyridin-8-one is obtained.
- R1 and R2 preferably form a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cyclohexyl ring system.
- Halo-C ⁇ -Cg-alkyl is selected from the group consisting of halomethyl, haloethyl, n-halopropyl, iso-halopropyl, n-halobutyl, tert-halobutyl, halo-1-methyl-propyl, halo-2-methyl- propyl, n-halopentyl, iso-halopentyl, n-halohexyl and iso-halohexyl.
- Halomethyl, haloethyl, n-halopropyl and iso-halopropyl are most preferred.
- the halogen is preferably fluorine. Most preferred is trifluoromethyl.
- Hydroxy-Ci-C ß- alkyl is selected from the group consisting of hydroxymethyl, hydroxyethyl, n-hydroxypropyl, iso-hydroxypropyl, n-hydroxybutyl, tert-hydroxybutyl, hydroxy-1-methyl-propyl, hydroxy-2-methyl -propyl, n-hydroxypentyl, iso-hydroxypentyl, n-hydroxyhexyl and iso-hydroxyhexyl. Most preferred are hydroxymethyl, hydroxyethyl, n-hydroxypropyl and iso-hydroxypropyl.
- Ci-Cg-alkoxy is selected from the group consisting of
- CC 6 _alkenyloxy is selected from the group consisting of ethenoxy, n-propenyloxy, isopropenyloxy, n-butenyloxy and sekiButenyloxy.
- C 2 -Cg_alkynyloxy is selected from the group consisting of ethynyloxy, n-propynyloxy, isopropynyloxy, n-butynyloxy and sec-butynyloxy.
- C ⁇ -Cg_Alkyl-oxy-C ⁇ -C 6 alkyl is selected from the group consisting of methoxymethyl, ethoxymethyl, propoxymethyl, methyloxyethyl, ethoxyethyl, propoxyethyl, methoxypropyl, ethoxypropyl and propoxypropyl.
- m) -C-C 5 _Alkyl-oxy-C-Cg-alkenyl is selected from the group consisting of methyloxyethenyl, ethoxyethenyl, propoxy-ethenyl, methoxypropenyl, ethoxypropenyl and propoxypropenyl.
- n) -C 6 -Alkyloxy-CC 6 -alkynyl is selected from the group consisting of methyloxyethynyl, ethoxyethynyl, propoxyethynyl, methoxypropynyl, ethoxypropynyl and propoxypropynyl.
- C -C 6 alkenyloxy-C ⁇ -Cg-alkyl is selected from the group consisting of ethenoxymethyl, propenoxymethyl, ethenoxyethyl, propenoxyethyl, ethenoxypropyl and propenoxypropyl.
- C ⁇ -Cg_Alkyl-oxy-C 2 -C 6 alkynyl is selected from the
- Cyano-Ci-Cg-alkyl is selected from the group consisting of cyanomethyl (acetonitrile), cyanoethyl, n-cyanopropyl, iso- cyanopropyl, n-cyanobutyl, tert-cyanobutyl, cyano-1-methyl-propyl, cyano-2 -methyl-propyl, n-cyanopentyl, iso-cyano-pentyl, n-cyanohexyl and iso-cyanohexyl. Most preferred are cyanomethyl (acetonitrile), cyanoethyl, n-cyanopropyl and iso-cyanopropyl.
- Isocyano-Ci-Cg-alkyl is selected from the group consisting of isocyanomethyl, isocyanoethyl, n-isocyanopropyl, iso-isocyanopropyl, n-isocyanobutyl, tert-isocyanobutyl, iso-cyano-1-methyl-propyl, isocyano-2- methyl-propyl, n-isocyano-pentyl, iso-isocyanopentyl, n-isocyanohexyl, iso-isocyano-hexyl. Most preferred are isocyanomethyl, isocyanoethyl, n-isocyanopropyl and iso-isocyanopropyl.
- amino-Ci-Cg-alkyl is selected from the group consisting of aminomethyl, aminoethyl, n-aminopropyl, iso-aminopropyl, n-aminobutyl, tert-aminobutyl, amino-1-methyl-propyl, amino-2-methyl propyl, n-aminopentyl, iso-aminopentyl, n-aminohexyl, iso-aminohexyl. Most preferred are aminomethyl, aminoethyl, n-aminopropyl and iso-aminopropyl.
- Amino-CC 6 -alkynyl is selected from the group consisting of aminoethynyl, 1-amino-1-propynyl, l-amino-2-propynyl, n-1-amino-butyn-l-yl, nl-amino-butyne -2-yl, n-1-amino-butyn-3-yl, l-amino-3-methyl-propyn-1-yl, n-1-amino-pentynyl, n-1-amino-hexynyl. Most preferred are aminoethynyl, 1-amino-l-propynyl and l-amino-2-propynyl.
- C ⁇ -Cg_Alkylcarboxyl is selected from the group consisting of methylcarboxyl, ethylcarboxyl and propylcarboxyl.
- C 3 -C 6 cycloalkyl is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cyclohexadienyl, imidazole and piperidine.
- Ci-Cg-alkylsulfonyl is selected from the group consisting of methylsulfonyl, ethylsulfonyl, n-propylsulfonyl, isopropylsulfonyl, n-butylsulfonyl, isobutylsulfonyl, sec-butylsulfonyl, tert-butylsulfonyl, (1-methyl-propyl) sulfon , 2-methyl-propylsulfonyl, n-pentylsulfonyl, isopentylsulfonyl, n-hexylsulfonyl and iso-hexylsulfonyl. Most preferred are methylsulfonyl, ethylsulfonyl, n-propylsulfonyl and iso-propylsulfonyl.
- the alkyl is selected from the group consisting of methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec -Butyl, tert-butyl, 1-methyl-propyl, 2-methyl-propyl, n-pentyl, isopentyl, n-hexyl and iso-hexyl, particularly preferably from the group consisting of methyl, ethyl, n- Propyl and isopropyl.
- Both substituents are very particularly preferably identical with regard to the disubstituted N, N- (C ⁇ -C-alkyl) sulfonamides.
- y) sulfonylurea can be substituted or unsubstituted, preferably substituted.
- the substitution can include substituted or unsubstituted alkyls or aryls or heteroaryls.
- L-Sulfonyl-3 (4, 6-dimethoxypyrimidin-2-yl) urea is very particularly preferred.
- Aryl is selected from the group consisting of substituted and unsubstituted benzyl, substituted and unsubstituted naphthyl, very particularly preferred are phenyl, tolyl, xylyl, 1-naphthyl, 2-naphthyl, 1-anthryl and 2-anthryl ,
- Heteroaryl is selected from the group consisting of substituted and unsubstituted aromatic heterocycle, substituted and unsubstituted aromatic or partially aromatic heterobicyclic, the heterocycles being 5 or 6-membered rings and up to 3 heteroatoms selected from the group N, 0, S can contain.
- the process according to the invention is carried out starting from imidazoles which each have a substitution different from hydrogen in position * 4 and position 5.
- the process according to the invention is carried out starting from imidazoles, each of which has an identical substitution different from hydrogen in position 4 and position 5.
- This embodiment is particularly advantageous since only one product is formed and the compounds of the general formulas Ia and Ib correspond. Since the yields on the desired product are particularly good here, this embodiment can be realized in an economically particularly advantageous manner.
- the substituted imidazo- [1,2a] -5, 6, 7, 8-tetrahydropyridin-8-ones according to the invention preferably comprise those which each have a substitution different from hydrogen in position 2 and position 3. These substitutions in positions 2 and 3 which are different from hydrogen are very particularly preferably identical.
- R3 H
- ⁇ -Butyrolactone and 4,5-dimethylimidazole or derivatives or modifications of the aforementioned are used.
- 2, 3-Dimethyl-imidazo [1, 2-a] - 5,6,7, 8-tetrahydropyridin-8-one is formed.
- ⁇ -Butyrolactone and f4-methylimidazole (or alternatively 5-methylimidazole) are used.
- ⁇ -Butyrolactone and 4-acetonitrile-5-methylimidazole or 5-acetonitrile-4-methylimidazole or derivatives or modifications of the aforementioned are used.
- R3 methyl in position 6 of the ImidazopyrimidonsySterns "or ß-position of the ⁇ -butyrolactone, are used
- R2 4-methylphenyl
- R N, N-dimethylacetamide.
- R2 chlorine
- Rl sulfonyl-3- (4, 6-dimethoxypyrimidin-2-yl) urea).
- ⁇ -Butyrolactone and: (4-ethylsulfonylimidazol-5-yl-sulfonyl) -3- (4, 6-dimethoxy-pyrimidin-2-yl) -urea or (5-ethylsulfonylimidazol-4-yl-sulfonyl) -3 are used - (4, 6-dimethoxypyrimidin-2-yl) urea or derivatives, precursors or modifications of the aforementioned.
- the sulfonylurea side chain is preferably built up only after the reaction of imidazole and ⁇ -butyrolactone.
- 1- (2-Ethylsulfonyl-imidazo- [1,2-a] -5,6,7, 8-tetrahydropyridin-8-one-3-yl-sulfonyl) -3- (4, 6-dimethoxypyrimidin-2) is formed -yl) urea and l- (3-ethylsulfonylimidazo [1, 2-a] -5,6,7, 8-tetrahydropyridin-8-one-2-ylsulfonyl) -3- (4, 6-dimethoxypyrimidin-2-yl) urea, where 1- (2-ethylsulfonylimidazo [1, 2-a] -5,6,7, 8-tetrahydropyr
- the amino function can be protected in the form of an amide.
- the hydroxy function can be protected in the form of an ester.
- the amino function can be in the form of an amide
- the carbonyl function can be protected in the form of an acetal 0.
- imidazoT-4-acetate available, for example, from SIGMA-ALDRICH
- esters of this compound can also be used, which are reductively converted to formyl after the reaction - if appropriate after saponification.
- R2 H. 5-formylimidazole or 4-formylimidazole and ⁇ -methyl- ⁇ -butyrolactone or derivatives or modifications of the aforementioned are used.
- the carbonyl function can be protected in the form of an acetal.
- R3 H
- R3 H
- 4,5- (N, N-diethylamino) carbonylimidazole and ⁇ -butyro-lactone or derivatives or modifications of the aforementioned are used.
- 2, 3- (N, N-diethylamino) carbonyl-imidazo [1,2-a] - 5,6,7, 8-tetrahydropyridin-8-one is formed.
- Derivatives and modifications in relation to the above-mentioned starting materials for the production of the preferred imidazo [1,2-a] -5, 6,7, 8-tetrahydropyridin-8-one means, for example, such chemical changes that increase the stability of the starting materials under the reaction conditions grant the inventive method.
- a carbonyl or formyl group can be protected in the form of an acetal.
- Substituted ⁇ -butyrolactones are accessible in the manner familiar to the person skilled in the art, inter alia from substituted 1,4-butanediols or substituted tetrahydrofurans. Common synthetic processes are described, among others, in Houben-Weyl "Methods of Organic Chemistry” Volume 6/2 Oxygen Compounds I Part 2; Author H. Kröper; Pp. 571ff, 1963. Substituted ⁇ -butyrolactones can be obtained, for example, from tetrahydrofurans or substituted ⁇ -halogenated butyric acid derivatives, such as 4-bromobutyric acid.
- ⁇ -butyrolactones or ⁇ -butyrolactones derived or derivatized from these by synthetic steps known to the person skilled in the art can be used, which (for the games can be purchased commercially from SIGMA-ALDRICH or FLUKA):
- Pantolactone (2-hydroxy-3, 3-dimethyl- ⁇ -butyrolactone) ⁇ -acetyl- ⁇ -methyl- ⁇ -butyrolactone ⁇ -phenyl- ⁇ -trifluoromethyl- ⁇ -butyrolactone ⁇ -benzylidene- ⁇ -butyrolactone ⁇ ⁇
- Another object of the invention relates to the use of the imidazo [1,2a] -5, 6, 7, 8-tetrahydropyridin-8-ones of the formula Ia or Ib according to the invention for the preparation of imidazo [1, 2a] pyridines, preferably according to the general formula IV, and of compounds of the general formula V and their preliminary or intermediate stages.
- A is 0 or NH
- R4 is substituted or unsubstituted, branched or unbranched -C-Cg-alkyl, C 2 -Cg-alkenyl, C-Cg-alkynyl, C 3 -C 7 -cycloalkyl, C 3 -Cg-alkadienyl, halo-C ⁇ -C 6 -alkyl,
- R5a and R5b is selected from the group consisting of hydrogen, hydroxyl, -CC 6 alkoxy, Ci-Cg-alkoxy-Ci-Cg-alkoxy, Ci-Cg-alkylcarbonyloxy. R5a and R5b together can also be oxygen (oxo group), and
- R6a and R6b is selected from the group consisting of hydrogen, hydroxyl, Ci-Cg-alkoxy, Ci-Cg-alkoxy-Ci-Cg-alkoxy, Ci-Cg-alkylcarbonyloxy, wherein at least one of the radicals R6a or R6b is hydrogen is.
- R6a and R6b together can also be oxygen (oxo group)
- R7 is hydrogen, halogen, Ci-Cg-alkyl, C ⁇ -Cg-alkoxy,
- R8 is hydrogen, halogen, Ci-Cg-alkyl, C ⁇ -Cg_alkoxy or salts thereof.
- 5, 6, 7, 8-tetrahydropyridin-8-one can be formed by reaction with alkyl or arylamines to form the base of the ship.
- the amine is preferably used in excess and the reaction is carried out under acidic catalysis, for example with p-toluenesulfonic acid (as described, for example, in: Organikum, Deutscher Verlag dermaschineen (1990), Chapter 7.1.1).
- the Schiff's bases (enamines) obtained can then be converted to substituted 8-amino-imidazo [1,2a] pyridines according to Reaction Scheme A (II) by oxidative aromatization.
- imidazo [1,2-a] -5,6,7, 8-tetrahydropyridin-8-one can be converted to ' imidazo [1,2a] pyridines by reaction with ammonia and subsequent oxidative aromatization, and the preferred compounds by reaction, for example obtained with haloalkylene or arylene (Scheme A (I)).
- 8-Hydroxy-imidazo [1, 2a] pyridines are directly accessible through oxidative aromatization.
- Oxidative aromatization can be achieved, for example, by reaction with 2,3-dichloro-5, 6-dicyanobenzoquinone (DDQ) in the manner familiar to the person skilled in the art (review article: Walker D. et al. (1967) Chem. Rev. 67: 153-195 ). Bromination and subsequent HBr cleavage can be used as a further flavoring variant.
- DDQ 2,3-dichloro-5, 6-dicyanobenzoquinone
- reaction scheme A (I) or B The reactions of 8-hydroxy-imidazo [1,2a] pyridines or 8-amino-imidazo [1,2a] pyridines according to reaction scheme A (I) or B are carried out using hydroxy- or haloalkylene or -arylene - optionally after in situ Derivatization or activation - is described for example in US 6,124,313, EP 0 033 094, EP 0 308 917 or EP 0 268 989.
- 2,3-dimethyl-imidazo [1,2-a] -5, 6, 7, 8-tetra-hydropyridin-8-one can be reacted with alkyl or aryl halides, preferably alkyl or aryl bromides, and then aromatized by oxidation to 2, 3-dimethyl-8-alkyl / aryloxy-imidazo- [1, 2-a] pyridines.
- 2-methyl-3-acetonitrile-imidazo [1,2-a] pyridin-8-one can be converted into 2-methyl-8- (phenylmethoxy) imidazo [1,2-a] by reaction with bromomethylbenzene and subsequent aromatization by oxidation.
- - Pyridine-3-acetonitrile are implemented.
- the compound is known under the name SCH-28080 and acts as an inhibitor of gastric H +, K + -ATPase.
- N, N, 6-trimethyl-2- (4-methylphenyl) imidazo [1,2-a] -5,6,7,8-tetrahydropyridin-8-one-3-acetamide can be reduced by reducing the oxo Group and subsequent elimination and aromatization to N, N, 6-trimethyl-2- (4-methylphenyl) imidazo [1,2-a] pyridine-3-acetamide.
- the compound is commercially available under the name Zolpidem (Arabia ® ) as a non-benzodiazepine benzodiazepine agonist.
- 3-Amino-2-methyl-imidazo [1,2-a] -5,6,7, 8-tetrahydropyridin-8-one can be converted to 3-amino-2-methyl- by reaction with, for example, phenylmethylbromide and subsequent aromatization by oxidation.
- 8— (phenylmethoxy) imidazo [1,2-a] pyridine can be reacted.
- a reaction with 2-phenylethylmagnesium bromide leads to 3-amino-2-methyl-8- (2-phenylethyl) imidazo [1,2-a] pyridine after subsequent elimination of the hydroxy group and aromatization.
- 3-formylimidazo [1,2-a] -5,6,7, 8-tetrahydropyridin-8-one can be converted to 3-formyl-8-methylimidazo [1,2.
- methylmagnesium bromide followed by aromatization with elimination of the hydroxy group -a] pyridine are implemented.
- This compound is suitable as an intermediate for the production of C-nucleoside analogs (as described in Pan SF et al. (1998) Tetrahedron Letters 39: 8191-8194).
- 3-Formyl-7-methyl-imidazo [1,2-a] -5,6,7, 8-tetrahyropyridin-8-one can be reduced to 3-formyl-7-methyl after reduction of the keto group and subsequent aromatization with elimination of the hydroxy group -imidazo- [1, 2-a] pyridine are implemented.
- This compound is suitable as an intermediate for the production of C-nucleoside analogs (as described in Pan SF et al. (1998) Tetrahedron Letters 39: 8191-8194).
- Preferred compounds of the general formula V are mentioned in 5 WO 98/42707.
- the compounds according to the invention 3-formyl-2-methylimidazo [1,2-a] -5, 6, 7, 8-tetrahydropyridin-8-one, 3-hydroxymethyl-2-methylimidazo [1, 2-a] -5,6,7,8-tetrahydropyridin-8-one or 2,3-dimethyl-imidazo [1, 2-a] -5,6,7,8-tetrahydropyridin-8-one according to reaction scheme C. be converted to one of the following 0 connections: ⁇ ⁇
- the formyl group is preferably used as acetal in a protected manner.
- the two isomeric reaction products were isolated by bulb tube distillation of the bottom at 180 ° C. and 0.4 mbar. 4.5 g (0.03 mol; 20% of the theoretical maximum yield) of 2-methylimidazo [1, 2a] -5, 6, 7, 8-tetrahydropyridin-8-one and 3-methylimidazo [1,2a ] -5, 6,7, 8-tetrahydropyridin-8-one in the ratio of approx. 1: 1 (according to NMR) as a light oil 5 .
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10145457A DE10145457A1 (de) | 2001-09-14 | 2001-09-14 | Substituierte Imidazo[1,2-a]-5,6,7,8-tetrahydropyridin-8-one, Verfahren zu ihrer Herstellung, sowie deren Verwendung zur Herstellung von Imidazo[1,2,-a]pyridinen |
| DE10145457 | 2001-09-14 | ||
| PCT/EP2002/009813 WO2003024963A2 (de) | 2001-09-14 | 2002-09-03 | Substituierte imidazo [1, 2-a]-5, 6, 7, 8- tetrahydropyridin-8-one, verfahren zu ihrer herstellung, sowie deren verwendung zur herstellung von imidazo [1, 2-a] pyridinen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1430052A2 true EP1430052A2 (de) | 2004-06-23 |
Family
ID=7699112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02776963A Withdrawn EP1430052A2 (de) | 2001-09-14 | 2002-09-03 | SUBSTITUIERTE IMIDAZO 1, 2−A −5&comm a; 6, 7, 8− TETRAHYDROPYRIDIN−8−ONE, VERFAHREN ZU IHRER HERSTELLUNG, SOWIE DEREN VERWENDUNG ZUR HERSTELLUNG VON IMIDAZO 1, 2−A PY RIDINEN |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7196196B2 (de) |
| EP (1) | EP1430052A2 (de) |
| JP (1) | JP2005504079A (de) |
| CA (1) | CA2459960A1 (de) |
| DE (1) | DE10145457A1 (de) |
| HU (1) | HUP0401991A3 (de) |
| WO (1) | WO2003024963A2 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008156314A2 (en) * | 2007-06-20 | 2008-12-24 | Lg Electronics Inc. | Effective system information reception method |
| WO2009038377A2 (en) * | 2007-09-20 | 2009-03-26 | Lg Electronics Inc. | Method of effectively transmitting radio resource allocation request in mobile communication system |
| US8722026B2 (en) | 2010-01-06 | 2014-05-13 | Elc Management, Llc | Skin lightening compositions |
| US8992897B2 (en) | 2010-01-06 | 2015-03-31 | Elc Management Llc | Skin lightening compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166851A (en) | 1977-05-16 | 1979-09-04 | Merck & Co., Inc. | Certain imidazo(1,2a)pyridine derivatives |
| ZA81219B (en) | 1980-01-23 | 1982-01-27 | Schering Corp | Imidazo (1,2-a) pyridines ,process for their preparation and pharmaceutical compositions containing them |
| DE3269604D1 (en) | 1981-06-26 | 1986-04-10 | Schering Corp | Novel imidazo(1,2-a)pyridines and pyrazines, processes for their preparation and pharmaceutical compositions containing them |
| US4725601A (en) | 1985-06-04 | 1988-02-16 | Fujisawa Pharmaceutical Co., Ltd. | Certain imidazo[1,2-a]pyridines useful in the treatment of ulcers |
| EP0228006A1 (de) | 1985-12-16 | 1987-07-08 | Fujisawa Pharmaceutical Co., Ltd. | Imidazopyridinverbindungen und Verfahren zu ihrer Herstellung |
| US4831041A (en) | 1986-11-26 | 1989-05-16 | Fujisawa Pharmaceutical Co., Ltd. | Imidazopyridine compounds and processes for preparation thereof |
| IL86269A0 (en) | 1987-05-08 | 1988-11-15 | Byk Gulden Lomberg Chem Fab | Imidazole derivatives,processes for the preparation thereof and pharmaceutical compositions containing the same |
| WO1989000570A1 (fr) | 1987-07-16 | 1989-01-26 | Byk Gulden Lomberg Chemische Fabrik Gmbh | Nouveaux diazoles |
| GB8722488D0 (en) | 1987-09-24 | 1987-10-28 | Fujisawa Pharmaceutical Co | Imidazopyridine compound |
| US5574042A (en) | 1992-11-02 | 1996-11-12 | Fujisawa Pharmaceutical Co., Ltd | Imidazo [1,2-a] pyridines and their pharmaceutical use |
| AU686115B2 (en) | 1992-11-02 | 1998-02-05 | Fujisawa Pharmaceutical Co., Ltd. | Imidazo (I,2-a) pyridine derivatives as bradykinin antagonists, pharmaceuticals and processes for their preparation |
| IL108520A (en) | 1993-02-15 | 1997-09-30 | Byk Gulden Lomberg Chem Fab | 2, 3, 8-TRISUBSTITUTED IMIDAZO £1, 2-a| PYRIDINE DERIVATIVES, PROCESSES FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM |
| US5426105A (en) | 1993-09-24 | 1995-06-20 | G.D. Searle & Co. | Conformationally restricted angiotensin II antagonists |
| UA48122C2 (uk) | 1993-10-11 | 2002-08-15 | Бік Гульден Ломберг Хеміше Фабрік Гмбх | АЛКОКСІАЛКІЛКАРБАМАТИ ІМІДАЗО[1,2-а]ПІРИДИНІВ, СПОСІБ ЇХ ОДЕРЖАННЯ ТА ЛІКАРСЬКИЙ ЗАСІБ НА ЇХ ОСНОВІ |
| WO1996003405A1 (de) | 1994-07-28 | 1996-02-08 | Byk Gulden Lomberg Chemische Fabrik Gmbh | Imidazopyridin-azolidinone |
| AU3221795A (en) | 1994-07-28 | 1996-02-22 | Byk Gulden Lomberg Chemische Fabrik Gmbh | Halogenated imidazopyridines |
| US6132768A (en) | 1995-07-05 | 2000-10-17 | Byk Gulden Lomberg Chemische Fabrik Gmbh | Oral pharmaceutical composition with delayed release of active ingredient for reversible proton pump inhibitors |
| DE19602853A1 (de) | 1996-01-26 | 1997-07-31 | Byk Gulden Lomberg Chem Fab | Neue Halogenimidazopyridine |
| US6096758A (en) | 1996-01-26 | 2000-08-01 | Byk Gulden Lomberg Chemische Fabrik Gmbh | 3-methylimidazopyridines |
| SE9700661D0 (sv) | 1997-02-25 | 1997-02-25 | Astra Ab | New compounds |
| EP0971922B1 (de) | 1997-03-24 | 2004-04-28 | ALTANA Pharma AG | Tetrahydropyridoverbindungen |
| JP2001526703A (ja) | 1997-05-28 | 2001-12-18 | ビイク グルデン ロンベルク ヒエーミツシエ フアブリーク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 縮合ジヒドロピラン |
| FR2772267A1 (fr) | 1997-12-16 | 1999-06-18 | Oreal | Compositions de teinture des fibres keratiniques contenant des derives imidazo-pyridines et procede |
| JP2003528876A (ja) | 2000-03-29 | 2003-09-30 | アルタナ ファルマ アクチエンゲゼルシャフト | アルキル化されたイミダゾピリジン誘導体 |
| ES2265423T3 (es) * | 2000-03-29 | 2007-02-16 | Altana Pharma Ag | Imidazopiridin-8-onas. |
| EA008151B1 (ru) | 2000-10-25 | 2007-04-27 | Алтана Фарма Аг | Полизамещенные имидазопиридины в качестве ингибиторов желудочной секреции |
| JP3616628B2 (ja) * | 2001-03-01 | 2005-02-02 | 塩野義製薬株式会社 | Hivインテグラーゼ阻害活性を有する含窒素芳香族複素環化合物 |
-
2001
- 2001-09-14 DE DE10145457A patent/DE10145457A1/de not_active Withdrawn
-
2002
- 2002-09-03 JP JP2003528810A patent/JP2005504079A/ja not_active Withdrawn
- 2002-09-03 US US10/488,751 patent/US7196196B2/en not_active Expired - Fee Related
- 2002-09-03 EP EP02776963A patent/EP1430052A2/de not_active Withdrawn
- 2002-09-03 HU HU0401991A patent/HUP0401991A3/hu unknown
- 2002-09-03 CA CA002459960A patent/CA2459960A1/en not_active Abandoned
- 2002-09-03 WO PCT/EP2002/009813 patent/WO2003024963A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03024963A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003024963A2 (de) | 2003-03-27 |
| HUP0401991A2 (hu) | 2005-01-28 |
| JP2005504079A (ja) | 2005-02-10 |
| HUP0401991A3 (en) | 2005-11-28 |
| US20050020620A1 (en) | 2005-01-27 |
| CA2459960A1 (en) | 2003-03-27 |
| WO2003024963A3 (de) | 2003-09-12 |
| US7196196B2 (en) | 2007-03-27 |
| DE10145457A1 (de) | 2003-04-03 |
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