US3278541A - Di-substituted-n-alkyl piperidines - Google Patents
Di-substituted-n-alkyl piperidines Download PDFInfo
- Publication number
- US3278541A US3278541A US3278541DA US3278541A US 3278541 A US3278541 A US 3278541A US 3278541D A US3278541D A US 3278541DA US 3278541 A US3278541 A US 3278541A
- Authority
- US
- United States
- Prior art keywords
- methyl
- acid
- piperidine
- grams
- aminomethyl
- 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.)
- Expired - Lifetime
Links
- 150000001875 compounds Chemical class 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 44
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 28
- 239000002253 acid Substances 0.000 description 20
- 125000004432 carbon atoms Chemical group C* 0.000 description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 18
- -1 isopropoxy-phenyl Chemical group 0.000 description 18
- 150000003839 salts Chemical class 0.000 description 16
- 239000011780 sodium chloride Substances 0.000 description 16
- 150000001412 amines Chemical class 0.000 description 14
- 238000002844 melting Methods 0.000 description 14
- BECJRCYGFBQCJG-UHFFFAOYSA-N [4-(3-methoxyphenyl)-1-methylpiperidin-4-yl]methanamine Chemical compound COC1=CC=CC(C2(CN)CCN(C)CC2)=C1 BECJRCYGFBQCJG-UHFFFAOYSA-N 0.000 description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- 125000000217 alkyl group Chemical group 0.000 description 12
- 230000000202 analgesic Effects 0.000 description 12
- 150000001735 carboxylic acids Chemical class 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000011541 reaction mixture Substances 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- 125000003545 alkoxy group Chemical group 0.000 description 10
- 230000000954 anitussive Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000007795 chemical reaction product Substances 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- PASDCCFISLVPSO-UHFFFAOYSA-N Benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 8
- OROGSEYTTFOCAN-DNJOTXNNSA-N Codeine Chemical compound C([C@H]1[C@H](N(CC[C@@]112)C)C3)=C[C@H](O)[C@@H]1OC1=C2C3=CC=C1OC OROGSEYTTFOCAN-DNJOTXNNSA-N 0.000 description 8
- 238000007792 addition Methods 0.000 description 8
- 150000002148 esters Chemical class 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 150000004820 halides Chemical class 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- WQDUMFSSJAZKTM-UHFFFAOYSA-N sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N acetic acid ethyl ester Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 150000007513 acids Chemical class 0.000 description 6
- 239000003434 antitussive agent Substances 0.000 description 6
- WVDDGKGOMKODPV-UHFFFAOYSA-N benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000000875 corresponding Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 239000012433 hydrogen halide Substances 0.000 description 6
- 229910000039 hydrogen halide Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- HVYWMOMLDIMFJA-DPAQBDIFSA-N (3β)-Cholest-5-en-3-ol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 4
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- UIERETOOQGIECD-UHFFFAOYSA-N 2-methylbut-2-enoic acid Chemical compound CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Chemical group OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
- JHJLBTNAGRQEKS-UHFFFAOYSA-M Sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 4
- 150000008064 anhydrides Chemical class 0.000 description 4
- 150000001540 azides Chemical class 0.000 description 4
- 235000010233 benzoic acid Nutrition 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 150000001649 bromium compounds Chemical class 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 4
- 150000001805 chlorine compounds Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000012458 free base Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical group 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N iso-propanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 230000000144 pharmacologic effect Effects 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 2
- RIZUCYSQUWMQLX-UHFFFAOYSA-N 2,3-dimethylbenzoic acid Chemical compound CC1=CC=CC(C(O)=O)=C1C RIZUCYSQUWMQLX-UHFFFAOYSA-N 0.000 description 2
- UAKUFLJSPDTAJZ-UHFFFAOYSA-N 2-(3-methoxyphenyl)-1-methylpiperidine Chemical compound COC1=CC=CC(C2N(CCCC2)C)=C1 UAKUFLJSPDTAJZ-UHFFFAOYSA-N 0.000 description 2
- NPRWNQSMJBAKCL-UHFFFAOYSA-N 2-chloro-6-methylbenzoyl chloride Chemical compound CC1=CC=CC(Cl)=C1C(Cl)=O NPRWNQSMJBAKCL-UHFFFAOYSA-N 0.000 description 2
- YYPNJNDODFVZLE-UHFFFAOYSA-N 3-methylbut-2-enoic acid Chemical compound CC(C)=CC(O)=O YYPNJNDODFVZLE-UHFFFAOYSA-N 0.000 description 2
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 2
- OKJIRPAQVSHGFK-UHFFFAOYSA-N Aceturic acid Chemical compound CC(=O)NCC(O)=O OKJIRPAQVSHGFK-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 2
- ZWLBUVRCUKQXQI-UHFFFAOYSA-N Br.Br.CN1CCC(CC1)(C1=CC(=CC=C1)O)CN Chemical compound Br.Br.CN1CCC(CC1)(C1=CC(=CC=C1)O)CN ZWLBUVRCUKQXQI-UHFFFAOYSA-N 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-N Bromate Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 2
- XGBZXKDWZYBKLU-UHFFFAOYSA-N C(C1=CC=CC=C1)(=O)NCC1(CCN(CC1)C)C1=CC(=CC=C1)O Chemical compound C(C1=CC=CC=C1)(=O)NCC1(CCN(CC1)C)C1=CC(=CC=C1)O XGBZXKDWZYBKLU-UHFFFAOYSA-N 0.000 description 2
- PGQGWPRQCMSUSR-UHFFFAOYSA-N COC1C(N(CCC1)C)C1=CC=CC=C1 Chemical compound COC1C(N(CCC1)C)C1=CC=CC=C1 PGQGWPRQCMSUSR-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- IWHPJUDZLVTQPG-UHFFFAOYSA-N Cl.C(C1=CC=CC=C1)(=O)C1(CC(N(CC1)C)CN)C1=CC(=CC=C1)O Chemical compound Cl.C(C1=CC=CC=C1)(=O)C1(CC(N(CC1)C)CN)C1=CC(=CC=C1)O IWHPJUDZLVTQPG-UHFFFAOYSA-N 0.000 description 2
- MTFOFPMPLPHFHF-UHFFFAOYSA-N Cl.C(C1=CC=CC=C1)(=O)C1(CC(N(CC1)C)CN)C1=CC(=CC=C1)OC Chemical compound Cl.C(C1=CC=CC=C1)(=O)C1(CC(N(CC1)C)CN)C1=CC(=CC=C1)OC MTFOFPMPLPHFHF-UHFFFAOYSA-N 0.000 description 2
- PSRMWIMVNCVERX-UHFFFAOYSA-N Cl.COC=1C=C(C=CC1)C1N(CCCC1)C Chemical compound Cl.COC=1C=C(C=CC1)C1N(CCCC1)C PSRMWIMVNCVERX-UHFFFAOYSA-N 0.000 description 2
- XKEURRNWZLZRNB-UHFFFAOYSA-N ClC1=C(C(=O)C2(CC(N(CC2)C)CN)C2=CC(=CC=C2)OC)C(=CC=C1)C Chemical compound ClC1=C(C(=O)C2(CC(N(CC2)C)CN)C2=CC(=CC=C2)OC)C(=CC=C1)C XKEURRNWZLZRNB-UHFFFAOYSA-N 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N Crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- 206010012335 Dependence Diseases 0.000 description 2
- JLTDJTHDQAWBAV-UHFFFAOYSA-N Dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- GUBGYTABKSRVRQ-UUNJERMWSA-N Lactose Natural products O([C@@H]1[C@H](O)[C@H](O)[C@H](O)O[C@@H]1CO)[C@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](CO)O1 GUBGYTABKSRVRQ-UUNJERMWSA-N 0.000 description 2
- QPJVMBTYPHYUOC-UHFFFAOYSA-N Methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 2
- 229940075582 Sorbic Acid Drugs 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- IIACRCGMVDHOTQ-UHFFFAOYSA-N Sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N Trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 229960001138 acetylsalicylic acid Drugs 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 2
- 239000000730 antalgic agent Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N aspirin Chemical group CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- IVRMZWNICZWHMI-UHFFFAOYSA-N azide Chemical compound [N-]=[N+]=[N-] IVRMZWNICZWHMI-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 150000001559 benzoic acids Chemical group 0.000 description 2
- CHIHQLCVLOXUJW-UHFFFAOYSA-N benzoic anhydride Chemical compound C=1C=CC=CC=1C(=O)OC(=O)C1=CC=CC=C1 CHIHQLCVLOXUJW-UHFFFAOYSA-N 0.000 description 2
- PJHUABJTDFXYRQ-UHFFFAOYSA-N benzoyl azide Chemical compound [N-]=[N+]=NC(=O)C1=CC=CC=C1 PJHUABJTDFXYRQ-UHFFFAOYSA-N 0.000 description 2
- 235000019445 benzyl alcohol Nutrition 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 235000013985 cinnamic acid Nutrition 0.000 description 2
- 229930016911 cinnamic acid Natural products 0.000 description 2
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 2
- 239000008298 dragée Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N fumaric acid Chemical compound OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000001145 hydrido group Chemical group *[H] 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000008101 lactose Substances 0.000 description 2
- GUBGYTABKSRVRQ-XLOQQCSPSA-N lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229940032007 methylethyl ketone Drugs 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 150000005209 naphthoic acids Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000825 pharmaceutical preparation Substances 0.000 description 2
- FCJSHPDYVMKCHI-UHFFFAOYSA-N phenyl benzoate Chemical class C=1C=CC=CC=1C(=O)OC1=CC=CC=C1 FCJSHPDYVMKCHI-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 229920001515 polyalkylene glycol Polymers 0.000 description 2
- 239000001184 potassium carbonate Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 229960004889 salicylic acid Drugs 0.000 description 2
- 230000001624 sedative Effects 0.000 description 2
- 239000000932 sedative agent Substances 0.000 description 2
- 229940075581 sodium bromide Drugs 0.000 description 2
- 239000001187 sodium carbonate Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WSWCOQWTEOXDQX-UHFFFAOYSA-N sorbic acid Chemical compound CC=CC=CC(O)=O WSWCOQWTEOXDQX-UHFFFAOYSA-N 0.000 description 2
- 239000004334 sorbic acid Substances 0.000 description 2
- 235000010199 sorbic acid Nutrition 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- 239000000829 suppository Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000003826 tablet Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- 229940086542 triethylamine Drugs 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D211/34—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
Definitions
- R stands for a hydrocarbon radical having up to carbon atoms and containing one or more double linkages which may be substituted by halogen, amino, or alkyl or alkoxy having up to 3 carbon atoms, R stands for alkyl having up to 4 carbon atoms, and R stands for hydroxy or alkoxy having up to 4 carbon atoms, wherein an amine of the general Formula II:
- R and R have the meanings given above, is reacted with a carboxylic acid of the general formula R-COOH, in which R has the meaning given above, or a halide, an anhydride, an ester or an azide of said acid, the compounds of the general Formula I being converted into their addition salts with physiologically tolerable acids where such salts are required.
- carboxylic acids As reactive derivatives of carboxylic acids, the corresponding halides, preferably chlorides and bromides are used, furthermore, for instance, anhydrides, esters or azides.
- the carboxylic acids referred to may contain one or several double linkages in the molecule. These double linkages may likewise be present in an aromatic ring system.
- carboxylic acids may be used, for instance: dimethyl-acrylic acid, crotonic acid, a-methyl-crotonic acid, a,,8-dimethyl-crotonic acid, fl-chloro-isocrotonic acid, ,B-ethyl-crotonic acid, a-ethyl-fi-methyl-crotonic acid, sorbic acid, cinnamic acid, benzoic acid and their derivatives, such as salicylic acid, acetyl-salicylic acid, benzoic acids substituted by halogen, amino or alkyl or alkoxy having up to 3 carbon atoms, as well as their diand tetrahydro-derivatives, naphthoic acids, diphenylcarboxylic acids; the use of a,/3-unsaturated carboxylic acids having 4 to 5 carbon atoms, e.g. dimethyl-acrylic acid and benzoic acid, being of particular advantage.
- the process of the invention is materialized by acylating one of the above-mentioned amines with one of the above-mentoned carboxylic acids or its reactive derivatives.
- Carboxylic acid halides especially chlorides or bromides are favorably used as starting substances. Acid halides are reacted with the amines at a temperature between 0 and 0, preferably between 0 and 30 C. Acid azides are reacted at O30 C., whereas free acids and acid esters are reacted between 60 and 200 C., the esters preferably at a temperature between and 200 C.
- the reaction may be carried out with or without the use of solvents.
- solvents there are suitable, for instance, diethyl ether, diisopropyl ether, dibutyl ether, tetrahydrofnrane and dioxane.
- ketones such as acetone, methyl-ethyl-ketone, hydrocarbons such as petroleum ether, benzene, toluene, xylene, furthermore dimethyl-forrnamide, ethyl acetate or acetonitrile can be used as solvents.
- the hydrogen halide is liberated and bound by the tertiary amino group in the reaction mixture. If a solvent is used in which the salt thus formed is insoluble or sparingly soluble, the reaction product is in many cases obtained as crystallized hydro-halide of the corresponding basic amide. If necessary, the products may be purified according to the usual methods, for instance by recrystallizing or converting them into the free base and subsequent addition of an appropriate acid.
- another amine may be used, especially a tertiary amine such as trimethylamine, triet-hylamine, dimethylaniline or pyridine, which, if desired, simultaneously serves as a solvent.
- a tertiary amine such as trimethylamine, triet-hylamine, dimethylaniline or pyridine
- an excessive amount of the starting amine or an alkali metal hydroxide, an alikali metal carbonate, an alkaline earth metal hydroxide or an alkaline earth metal carbonate may be used as a hydrogen halide binding agent.
- the products of the invention are valuable medicatmen-ts. They are well tolerated and show favorable pharmacological properties. They are especially suitable as antitussive agents. Some of them likewise show a sedative efiiciency.
- German Patent 1,112,514 basic carboxylic acid amides are known which are open-chain compounds analogous to those obtained according to the process of the present invention. It is surprising that the physiological action of the novel compounds differs from that of the known substances.
- the known 5- methyl-crotonic acid-2- (m-methoxy-phenyl) -2- (tr-dimethylamino-ethyl)-butylamide-hydrochloride (A) shows a strong analgesic and, practically, no antitussive efliciency
- the compounds prepared according to the process of the present invention for instance 4-(B-methyl-crotonoyl) aminomethyl 4-(m-methoxy-phenyl)-1-methyl-pipractically show no analgesic but a strong antitussive efliciency.
- a dose of 0.7 mg./ kg. of the products of the invention provokes the same antitussive effect as a dose of 1 mg./ kg. of codein.
- they show no analgesic effect when given in the above-mentioned doses.
- the absence of analgesic efiiciency means an advantage for antitussive agents, particularly since the use of substances like codein which show analgesic as well as antitussive activity implies the risk of addiction.
- the products of the present invention are used as such or in the form of their salts.
- hydrohalic acids such as hydrochloric or hydrobromic acid, sulfuric acid, phosphoric acid, amidosulfonic acid and organic acids such as formic acid, acetic acid, malonic acid, succinic acid, lactic acid, maleic acid, pamino-salicylic acid and aceturic acid can be used.
- the compounds are processed into pharmaceutical preparations by mixing them with physiologically tolerable, usual organic or inorganic, solid or liquid carriers which do not react with the compounds, for instance,
- EXAMPLE 1 4-benz0yl-amin0methyl-4- (m-methoxy-phenyl) 1-methyl-piperidine-hydrohloride (a) To a solution of 14 grams of benzoyl-chloride in 300 cc. of benzene, a solution of 23.4 grams of l-methyl- 4-aminomethyl-4-(m-methoxy-phenyl) piperidine (boiling point of 144-146 C. under a pressure of 0.1 mm. of mercury) in milliliters of benzene is gradually added while stirring at 20-30 C. Stirring is continued for 30 minutes. The crystalline magma thus formed is filtered with suction, dried and recrystallized from methanol by adding ether.
- EXAMPLE 2 4-(fl-methyl-crotonoyl) -amin0methyl-4-(m-methoxyphenyl -methyl-piperidine-hydroclzloride 11.9 grams of B-methyl-crotonic acid chloride and 23.4 grams of 1 methyl 4 aminomethyl 4-(m-methoxyphenyl)-piperidine are reacted according to the method described in Example 1(a). 29.5 grams of 4-(/3-methylcrotonoyl) aminmoethyl 4 (m-methoxy-phenyl) 1 methyl-piperidine-hydrochloride are obtained, melting at 149152 C. after recrystallization from acetone.
- EXAMPLE 3 4-benz0yl-aminomethyl-4-(m-hydr0xy-phenyl)- 1 -methyl-piperidine-hydrochloride 8.3 grams of 1-methyl-4-aminomethyl-4-(m-hydroxyphenyl)-piperidine-dihydrobromide (prepared from 1- methyl 4 aminomethyl-4-(m-methoxy-phenyl)-piperidine by reaction with hydro'bromic acid of 63% strength at 120 C.) are dissolved in 180 cc. of absolute ethanol; 20.2 cc. of 2.15 N-methanolic sodium-methylate solution are added and the solution is concentrated by evaporation.
- 1-methyl-4-aminomethyl-4-(m-hydroxyphenyl)-piperidine-dihydrobromide prepared from 1- methyl 4 aminomethyl-4-(m-methoxy-phenyl)-piperidine by reaction with hydro'bromic acid of 63% strength at 120 C.
- EXAMPLE 4 4-(p-eth0xy-benzoyl) -aminomethyl-4-(m-methoxyphenyl) -1-methyl-piperidine-hydrochloride
- a solution of 23.4 grams of 1-methyl-4-aminomethyl-4-(m-methoxy-phenyl)-piperidine in 300 cc. of benzene heated to the boil a solution of 18.5 grams of pethoxy-benzoyl-chloride in 100 cc. of benzene is gradually added while stirring. After cooling, the reaction product is filtered with suction, washed with ether and recrystallized fIom ethanol. 15.8 grams of 4-(p-ethoxy-benzoyl)- aminomethyl-4 (m-methoxy-phenyl) l-methyl-piperidine-hydrochloride melting at 237239 C. are obtained.
- R is selected from the group consisting of a hydrocarbon radical, halohydrocarbon, aminohydrocarbon, alkyl and alkoxy hydrocarbon radicals wherein the hydrocarbon portion has at least one double linkage and up to ten carbon atoms and the alkyl and alkoxy portions have up to three carbon atoms, R stands for alkyl having up to four carbon atoms, and R stands for hydroxy or alkoxy having up to four carbon atoms, and addition salts thereof with a physiologically tolerable acid.
Description
nited States Patent 3,278,541 4,4-Dll-SUBSTlTUTED-N-ALKYL PIPERIDINE Karl Schmitt and Ernst Linrlner, Frankfurt am Main, Germany, assignors to Farbwerke Hoechst Aktiengesellschaft vormals Meister Lucius & Briining, Frankfurt am Main, Germany, a corporation of Germany No Drawing. Filed Apr. 30, 1963, Ser. No. 276,982
Claims priority, application Germany, May 5, 19 62,
6 Claims. or. 260294) in which R stands for a hydrocarbon radical having up to carbon atoms and containing one or more double linkages which may be substituted by halogen, amino, or alkyl or alkoxy having up to 3 carbon atoms, R stands for alkyl having up to 4 carbon atoms, and R stands for hydroxy or alkoxy having up to 4 carbon atoms, wherein an amine of the general Formula II:
in which R and R have the meanings given above, is reacted with a carboxylic acid of the general formula R-COOH, in which R has the meaning given above, or a halide, an anhydride, an ester or an azide of said acid, the compounds of the general Formula I being converted into their addition salts with physiologically tolerable acids where such salts are required.
As reactive derivatives of carboxylic acids, the corresponding halides, preferably chlorides and bromides are used, furthermore, for instance, anhydrides, esters or azides. The carboxylic acids referred to may contain one or several double linkages in the molecule. These double linkages may likewise be present in an aromatic ring system. The following carboxylic acids may be used, for instance: dimethyl-acrylic acid, crotonic acid, a-methyl-crotonic acid, a,,8-dimethyl-crotonic acid, fl-chloro-isocrotonic acid, ,B-ethyl-crotonic acid, a-ethyl-fi-methyl-crotonic acid, sorbic acid, cinnamic acid, benzoic acid and their derivatives, such as salicylic acid, acetyl-salicylic acid, benzoic acids substituted by halogen, amino or alkyl or alkoxy having up to 3 carbon atoms, as well as their diand tetrahydro-derivatives, naphthoic acids, diphenylcarboxylic acids; the use of a,/3-unsaturated carboxylic acids having 4 to 5 carbon atoms, e.g. dimethyl-acrylic acid and benzoic acid, being of particular advantage.
3,278,541 Patented Oct. 11, 1966 The above-mentioned carboxylic acids are reacted with the following amines, for instance:
1-methyl-4-aminomethyl-4-(o-, mor p-methoxy-phenyl)-piperidine, 1-methyl-4-aminomethyl-4-(o-, mor pethoxy-phenyl) -piperidine, 1-methyl-4-aminomethyl-4- 0-, mor propoxyor isopropoxy-phenyl)-piperidine, l-methyl-4-aminomethyl-4-(o-, mor p-n-butoxy, sec.butoxyor iso-butyl-phenyl)-piperidine; instead of l-methyl, there may also stand l-ethyl, l-n-propyl, l-isopropyl, l-n-butyl, 1-sec.butyl or l-isobutyl. It is of advantage to use l-methyl-4-aminomethyl-4- (m-methoxy-phenyl) -piperidine.
The process of the invention is materialized by acylating one of the above-mentioned amines with one of the above-mentoned carboxylic acids or its reactive derivatives. Carboxylic acid halides, especially chlorides or bromides are favorably used as starting substances. Acid halides are reacted with the amines at a temperature between 0 and 0, preferably between 0 and 30 C. Acid azides are reacted at O30 C., whereas free acids and acid esters are reacted between 60 and 200 C., the esters preferably at a temperature between and 200 C.
The reaction may be carried out with or without the use of solvents. As solvents there are suitable, for instance, diethyl ether, diisopropyl ether, dibutyl ether, tetrahydrofnrane and dioxane. Furthermore, ketones, such as acetone, methyl-ethyl-ketone, hydrocarbons such as petroleum ether, benzene, toluene, xylene, furthermore dimethyl-forrnamide, ethyl acetate or acetonitrile can be used as solvents.
In the course of the reaction of the acid halides with the amines the hydrogen halide is liberated and bound by the tertiary amino group in the reaction mixture. If a solvent is used in which the salt thus formed is insoluble or sparingly soluble, the reaction product is in many cases obtained as crystallized hydro-halide of the corresponding basic amide. If necessary, the products may be purified according to the usual methods, for instance by recrystallizing or converting them into the free base and subsequent addition of an appropriate acid.
For binding the hydrogen halide, another amine may be used, especially a tertiary amine such as trimethylamine, triet-hylamine, dimethylaniline or pyridine, which, if desired, simultaneously serves as a solvent. Furthermore, an excessive amount of the starting amine or an alkali metal hydroxide, an alikali metal carbonate, an alkaline earth metal hydroxide or an alkaline earth metal carbonate may be used as a hydrogen halide binding agent. Finally, it is possible to carry out the reaction in an aqueous suspension in the presence of alkaline or alkaline earth agents. In this case, the reaction products are formed as free bases which, if desired, are converted into the corresponding salts by treatment with physiologically tolerable organic or inorganic acids.
The products of the invention are valuable medicatmen-ts. They are well tolerated and show favorable pharmacological properties. They are especially suitable as antitussive agents. Some of them likewise show a sedative efiiciency.
From German Patent 1,112,514 basic carboxylic acid amides are known which are open-chain compounds analogous to those obtained according to the process of the present invention. It is surprising that the physiological action of the novel compounds differs from that of the known substances. Whereas, for instance, the known 5- methyl-crotonic acid-2- (m-methoxy-phenyl) -2- (tr-dimethylamino-ethyl)-butylamide-hydrochloride (A) shows a strong analgesic and, practically, no antitussive efliciency, the compounds prepared according to the process of the present invention, for instance 4-(B-methyl-crotonoyl) aminomethyl 4-(m-methoxy-phenyl)-1-methyl-pipractically show no analgesic but a strong antitussive efliciency.
The Tables I and II show these effects and, in comparison therewith, the known effects of codein which simultaneously is a strong analgesic and antitussive agent.
(I) Test regarding analgesic cfficiency in mice (according to Wolf, Hardy and Goodell [J. Clin. Invest. 19, (1940), 659] Dose in Compound mg./kg. s.c.
Angalesic elficiency Strong effect.
No efiect.
(II) Test regarding antitussive eflicicncy in cats (according to R. Domenjoz [Naunyn-Schmcidebcrgs Arch. Exp. Pathol. Pharmakol. 215 (1952), 18]
According to the above pharmacological test results, a dose of 0.7 mg./ kg. of the products of the invention provokes the same antitussive effect as a dose of 1 mg./ kg. of codein. In contradistinction to compounds of similar structure, and to codein, they show no analgesic effect when given in the above-mentioned doses. The absence of analgesic efiiciency means an advantage for antitussive agents, particularly since the use of substances like codein which show analgesic as well as antitussive activity implies the risk of addiction.
The products of the present invention are used as such or in the form of their salts. For salt formation, for instance, hydrohalic acids such as hydrochloric or hydrobromic acid, sulfuric acid, phosphoric acid, amidosulfonic acid and organic acids such as formic acid, acetic acid, malonic acid, succinic acid, lactic acid, maleic acid, pamino-salicylic acid and aceturic acid can be used.
The compounds are processed into pharmaceutical preparations by mixing them with physiologically tolerable, usual organic or inorganic, solid or liquid carriers which do not react with the compounds, for instance,
water, gelatin, lactose, starch, magnesium stearate, talc, vegetable oils, benzyl alcohol, gum, polyalkylene-glycols, cholesterin. They are used, for example, with or without addition of wetting agents, emulsifiers or stabilizers, as solutions or suspensions, tablets, dragees, in capsules or in the form of suppositories.
As single dose 5 to 50 milligrams are used.
The following examples serve to illustrate the invention but they are not intended to limit it thereto:
EXAMPLE 1 4-benz0yl-amin0methyl-4- (m-methoxy-phenyl) 1-methyl-piperidine-hydrohloride (a) To a solution of 14 grams of benzoyl-chloride in 300 cc. of benzene, a solution of 23.4 grams of l-methyl- 4-aminomethyl-4-(m-methoxy-phenyl) piperidine (boiling point of 144-146 C. under a pressure of 0.1 mm. of mercury) in milliliters of benzene is gradually added while stirring at 20-30 C. Stirring is continued for 30 minutes. The crystalline magma thus formed is filtered with suction, dried and recrystallized from methanol by adding ether. 30.2 grams of 4-benzoyl-aminomethyl-4- (m-methoxy-phenyl)-1-methyl piperidine hydrochloride are obtained which, after drying at 80 C. under a pressure of 20 mm. Hg, melt at 194196 C.
(b) The same compound is obtained, if instead of benzoyl chloride the equivalent amount of benzoic acid anhydride is used and the reaction mixture is heated to the boil for 1 hour. For the conversion into the hydrochloride, the reaction mixture is triturated with dilute sodium hydroxide solution and the benzene layer is neutralized by means of hydrogen chloride after drying by means of anhydrous potassium carbonate.
(0) The same compound is obtained by heating 25 grams of benzoic acid methyl ester, 23.4 grams of 1- methyl-4-aminomethyl-4 (m-methoxy-phenyl) piperidine and 0.2 gram of sodium methylate in an atmosphere of nitrogen for 6 hours to 200 C. The reaction mixture is taken up in hot isopropanol, acidified with isopropanolic hydrochloric acid and after filtration a seed crystal is added. After several recrystallizations, 3.6 grams of the compound melting at 194196 C. are obtained.
(d) The same compound is obtained by adding a solution of 5.5 grams of 1-methyl-4-aminomethyl-4-(mmethoxy-phenyl)-piperidine in 75 cc. of ether to a solution of 3.7 grams of benzazide in 50 cc. of ether, while cooling with ice, and allowing the mixture to stand for some days excluding moisture. The reaction mixture is then triturated several times with dilute sodium carbonate solution. The ether solution is dried with sodium sulfate and acidified by means of methanolic hydrochloric acid, and the salt thus obtained is recrystallized from isopropanol. 1.8 grams of the hydrochloride melting at 194- 196 C. are obtained.
(e) The same compound is obtained by suspending 23.4 grams of 1-methyl-4-aminomethyl-4-(m-methoxyphenyl)-piperidine in 200 cc. of normal sodium hydroxide solution while vigorously stirring, and by gradually adding 15 grams of benzoyl chloride while cooling with ice. The reaction product is taken up in ether and converted as described above into the hydrochloride melting at 194-196 C.
EXAMPLE 2 4-(fl-methyl-crotonoyl) -amin0methyl-4-(m-methoxyphenyl -methyl-piperidine-hydroclzloride 11.9 grams of B-methyl-crotonic acid chloride and 23.4 grams of 1 methyl 4 aminomethyl 4-(m-methoxyphenyl)-piperidine are reacted according to the method described in Example 1(a). 29.5 grams of 4-(/3-methylcrotonoyl) aminmoethyl 4 (m-methoxy-phenyl) 1 methyl-piperidine-hydrochloride are obtained, melting at 149152 C. after recrystallization from acetone.
EXAMPLE 3 4-benz0yl-aminomethyl-4-(m-hydr0xy-phenyl)- 1 -methyl-piperidine-hydrochloride 8.3 grams of 1-methyl-4-aminomethyl-4-(m-hydroxyphenyl)-piperidine-dihydrobromide (prepared from 1- methyl 4 aminomethyl-4-(m-methoxy-phenyl)-piperidine by reaction with hydro'bromic acid of 63% strength at 120 C.) are dissolved in 180 cc. of absolute ethanol; 20.2 cc. of 2.15 N-methanolic sodium-methylate solution are added and the solution is concentrated by evaporation. The free base thus obtained is taken up in benzene, separated from sodium bromide and reacted with 3 grams of benzoyl-chloride. The reaction mixture is stirred for 1 hour at 40 to 60 C. 7 grams of 4-benzoyl-aminomethyl- 4-(m-hydroxy-phenyl)-l-methyl-piperidine hydrochloride are obtained melting at 257 to 260 C, after having been recrystallized from a mixture of methanol and ether.
EXAMPLE 4 4-(p-eth0xy-benzoyl) -aminomethyl-4-(m-methoxyphenyl) -1-methyl-piperidine-hydrochloride To a solution of 23.4 grams of 1-methyl-4-aminomethyl-4-(m-methoxy-phenyl)-piperidine in 300 cc. of benzene heated to the boil, a solution of 18.5 grams of pethoxy-benzoyl-chloride in 100 cc. of benzene is gradually added while stirring. After cooling, the reaction product is filtered with suction, washed with ether and recrystallized fIom ethanol. 15.8 grams of 4-(p-ethoxy-benzoyl)- aminomethyl-4 (m-methoxy-phenyl) l-methyl-piperidine-hydrochloride melting at 237239 C. are obtained.
EXAMPLE 5 4-(2'-ohloro-6'-methyl-benz0yl) -amin0methyl-4- (m-methoxy-phenyl) -1-methyl-piperidine To a solution of 18.9 grams of 2-chloro-6-methylbenzoyl-chloride in 300 cc. of ether, 23.4 grams of 1- methyl-4-aminomethyl-4-(m-methoxy phenyl) piperidine are dropwise added while stirring, the temperature being allowed to reach the boiling point of the solvent. The reaction product is isolated in usual manner. 34.5 grams of 4-(2-chloro-6'-methyl-benzoyl)-aminomethyl- 4-(m-methoxy-phenyl)-1-methyl-piperidine are obtained, showing a melting point of 152-154 C. (from a mixture of methanol and ether).
6 We claim: 1. A compound of the formula in which R is selected from the group consisting of a hydrocarbon radical, halohydrocarbon, aminohydrocarbon, alkyl and alkoxy hydrocarbon radicals wherein the hydrocarbon portion has at least one double linkage and up to ten carbon atoms and the alkyl and alkoxy portions have up to three carbon atoms, R stands for alkyl having up to four carbon atoms, and R stands for hydroxy or alkoxy having up to four carbon atoms, and addition salts thereof with a physiologically tolerable acid.
2. 4-benzoy1aminomethyl 4 (m-methoxyphenyl)-1- methyl-piperidine.
3. 4-(,B-methyl-crotonoylamino-methyl) 4 (m-methoxyphenyl -1-rnethyl-piperidine.
4. 4-benzoylaminomethyl-4 (m-hydroxyphenyl) 1- methyl-piperidine.
5. 4-(p-ethoxybenzoylaminomethyl) 4 (m-methoxyphenyl)-l-rnethyl-piperidine.
6. 4 (2' chloro-6-methyl-benzoylaminomethyl)-4- (m-methoxyphenyl-l-methyl-piperidine.
References Cited by the Examiner UNITED STATES PATENTS 1,794,292 2/1931 H0110 16755 1,915,334 6/1933 Salzberg et al. 260243 2,075,359 3/ 1937 Salzberg et a1. 167-22 2,425,320 8/1947 Hill 252149 2,606,155 8/1952 Hill 252149 3,033,869 5/1962 Giudicelli et al 260294 3,058,986 10/ 1962 Lutz et a1 260294 3,069,317 12/1962 Jensen 16755 ALEX MAZEL, Primary Examiner.
NICHOLAS S. RIZZO, Examiner.
JOSE TOVAR, Assistant Examiner.
Claims (1)
1. A COMPOUND OF THE FORMULA
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Cited By (4)
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JP2002528503A (en) * | 1998-10-30 | 2002-09-03 | メルク エンド カムパニー インコーポレーテッド | Heterocyclic potassium channel inhibitors |
JP2004526761A (en) * | 2001-04-12 | 2004-09-02 | ファーマコピア, インコーポレイテッド | Arylpiperidines and biarylpiperidines used as MCH antagonists |
JP2005529114A (en) * | 2002-04-19 | 2005-09-29 | ブリストル−マイヤーズ スクイブ カンパニー | Heterocyclic inhibitors of potassium channel function |
JP2008526701A (en) * | 2004-12-30 | 2008-07-24 | ノバルティス アクチエンゲゼルシャフト | Organic compounds |
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