BE566395A - - Google Patents
Info
- Publication number
- BE566395A BE566395A BE566395DA BE566395A BE 566395 A BE566395 A BE 566395A BE 566395D A BE566395D A BE 566395DA BE 566395 A BE566395 A BE 566395A
- Authority
- BE
- Belgium
- Prior art keywords
- hydrazine
- salts
- picolinic
- nicotinic acid
- general formula
- Prior art date
Links
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 claims description 19
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- SIOXPEMLGUPBBT-UHFFFAOYSA-N picolinic acid Chemical compound OC(=O)C1=CC=CC=N1 SIOXPEMLGUPBBT-UHFFFAOYSA-N 0.000 claims description 17
- 150000003839 salts Chemical class 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 12
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- -1 heterocyclic hydrazine derivatives Chemical class 0.000 claims description 9
- 235000001968 nicotinic acid Nutrition 0.000 claims description 9
- 229960003512 nicotinic acid Drugs 0.000 claims description 9
- 239000011664 nicotinic acid Substances 0.000 claims description 9
- 229940081066 picolinic acid Drugs 0.000 claims description 8
- MAUBFEHMBSQXMM-UHFFFAOYSA-N n'-benzylpyridine-2-carbohydrazide Chemical compound C=1C=CC=NC=1C(=O)NNCC1=CC=CC=C1 MAUBFEHMBSQXMM-UHFFFAOYSA-N 0.000 claims description 7
- 150000001718 carbodiimides Chemical class 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 150000002429 hydrazines Chemical class 0.000 claims description 5
- 150000007857 hydrazones Chemical class 0.000 claims description 5
- DUCNKBZIKNAQOS-UHFFFAOYSA-N O=[C]C1=CC=CN=C1 Chemical compound O=[C]C1=CC=CN=C1 DUCNKBZIKNAQOS-UHFFFAOYSA-N 0.000 claims description 4
- 150000001728 carbonyl compounds Chemical group 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 150000004820 halides Chemical class 0.000 claims description 3
- ZXVUSJARFUEZOH-UHFFFAOYSA-N C(C1=CN=CC=C1)(=O)NNCC1=CC=CC=C1 Chemical compound C(C1=CN=CC=C1)(=O)NNCC1=CC=CC=C1 ZXVUSJARFUEZOH-UHFFFAOYSA-N 0.000 claims description 2
- 230000001430 anti-depressive effect Effects 0.000 claims description 2
- 239000000935 antidepressant agent Substances 0.000 claims description 2
- 229940005513 antidepressants Drugs 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims 1
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 32
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 5
- 229910003446 platinum oxide Inorganic materials 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 125000000623 heterocyclic group Chemical group 0.000 description 4
- 238000005984 hydrogenation reaction Methods 0.000 description 4
- KFUSANSHCADHNJ-UHFFFAOYSA-N pyridine-3-carbohydrazide Chemical compound NNC(=O)C1=CC=CN=C1 KFUSANSHCADHNJ-UHFFFAOYSA-N 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 150000003672 ureas Chemical class 0.000 description 3
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LEOCPUDHOSXYJG-UHFFFAOYSA-N N'-benzhydrylpyridine-3-carbohydrazide Chemical compound C(C1=CN=CC=C1)(=O)NNC(C1=CC=CC=C1)C1=CC=CC=C1 LEOCPUDHOSXYJG-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-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
- 238000009835 boiling Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 229940093915 gynecological organic acid Drugs 0.000 description 2
- 239000012442 inert solvent Substances 0.000 description 2
- VKHPPPQEBGYWOR-UHFFFAOYSA-N n-(benzylideneamino)pyridine-2-carboxamide Chemical compound C=1C=CC=NC=1C(=O)NN=CC1=CC=CC=C1 VKHPPPQEBGYWOR-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- MIOPJNTWMNEORI-GMSGAONNSA-N (S)-camphorsulfonic acid Chemical compound C1C[C@@]2(CS(O)(=O)=O)C(=O)C[C@@H]1C2(C)C MIOPJNTWMNEORI-GMSGAONNSA-N 0.000 description 1
- DBNWBEGCONIRGQ-UHFFFAOYSA-N 1,1-diphenylpropan-2-one Chemical compound C=1C=CC=CC=1C(C(=O)C)C1=CC=CC=C1 DBNWBEGCONIRGQ-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- NOXKUHSBIXPZBJ-UHFFFAOYSA-N 1-(4-methylphenyl)propan-2-one Chemical compound CC(=O)CC1=CC=C(C)C=C1 NOXKUHSBIXPZBJ-UHFFFAOYSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 description 1
- YEFQQYQCZGBYTP-UHFFFAOYSA-N C(=O)(O)C(O)C(O)C(=O)O.N1=C(C=CC=C1)C(=O)NNCC1=CC=CC=C1 Chemical compound C(=O)(O)C(O)C(O)C(=O)O.N1=C(C=CC=C1)C(=O)NNCC1=CC=CC=C1 YEFQQYQCZGBYTP-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- RVTHKOKRJRXUHP-UHFFFAOYSA-N N'-benzhydrylpyridine-2-carbohydrazide Chemical compound N1=C(C=CC=C1)C(=O)NNC(C1=CC=CC=C1)C1=CC=CC=C1 RVTHKOKRJRXUHP-UHFFFAOYSA-N 0.000 description 1
- DUXDFHSXGBULKE-UHFFFAOYSA-N N'-benzylpyridine-2-carbohydrazide hydrobromide Chemical compound Br.N1=C(C=CC=C1)C(=O)NNCC1=CC=CC=C1 DUXDFHSXGBULKE-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- WZHCOOQXZCIUNC-UHFFFAOYSA-N cyclandelate Chemical compound C1C(C)(C)CC(C)CC1OC(=O)C(O)C1=CC=CC=C1 WZHCOOQXZCIUNC-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229940098895 maleic acid Drugs 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- BAQLNPIEFOYKNB-UHFFFAOYSA-N pyridine-2-carbohydrazide Chemical compound NNC(=O)C1=CC=CC=N1 BAQLNPIEFOYKNB-UHFFFAOYSA-N 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Pyridine Compounds (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE566395A true BE566395A (d) |
Family
ID=186544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE566395D BE566395A (d) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE566395A (d) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1098002B (de) * | 1959-04-22 | 1961-01-26 | Basf Ag | Verfahren zur Herstellung von Carbonsaeurehydraziden |
-
0
- BE BE566395D patent/BE566395A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1098002B (de) * | 1959-04-22 | 1961-01-26 | Basf Ag | Verfahren zur Herstellung von Carbonsaeurehydraziden |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1088939A (fr) | Medicaments derives de l'indole | |
| EP0042781B1 (fr) | Nouveaux dérivés de (quinolyl-4)-1 (pipéridyl ou pyrrolidinyl-2 ou -3)-2 ou -3 éthanone ou propanone, procédés pour leur préparation, et leur utilisation comme médicaments | |
| EP0699187B1 (fr) | Derives de beta,beta-dimethyl-4-piperidineethanamine comme inhibiteurs de la biosynthese du cholesterol | |
| EP0566468A2 (fr) | Procédé de préparation d'un dérivé de biphényl | |
| EP0005689A1 (fr) | Nouveaux acides lactame-N-acétiques et leurs amides, leurs procédés de préparation et compositions thérapeutiques | |
| NO127606B (d) | ||
| EP1214313B1 (fr) | Heteroaryloxypropanolamines comme agonistes du recepteur beta3-adrenergique | |
| FR2679555A1 (fr) | Nouveaux derives de l'uree, leur preparation et leur application en therapeutique. | |
| EP1050531B1 (fr) | Composés pyridiniques ou pipéridiniques substitués pour le traitement des maladies neurodégénératives | |
| FR2496104A1 (fr) | Nouveaux produits de la serie de la 3-(piperidin-4-yl) 2h-indol-2-one, et procede pour leur preparation | |
| BE566395A (d) | ||
| EP0074903A2 (fr) | Dérivés d'amino-2 tétrahydro-1,2,3,4 naphtalène, leur préparation et leur application en thérapeutique | |
| US3092660A (en) | 1-acyl-2-alkyl-hydrazine derivatives | |
| FR2560194A1 (fr) | 3-aminoazetidine, ses sels, procede pour leur preparation et intermediaires de synthese | |
| DE69608121T2 (de) | N-geschützte/n-substituierte beta-aminohydroxysulfonate | |
| WO1994020466A1 (fr) | Nouveaux derives de la phenoxy-2 ethylamine, leur preparation et leur application en therapeutique | |
| EP0065908B1 (fr) | ((Alkyl- et alcényl-3 pipéridyl-4)-2 éthyl)-3 indoles et leur utilisation comme médicaments | |
| BE1000112A5 (fr) | Procede de preparation d'encainide. | |
| FR2792635A1 (fr) | Derives de cyclobutene-3,4-dione leur preparation et leur application en therapeutique | |
| EP0412898A1 (fr) | Nouveaux dérivés d'oxazolo pyridines, leur procédé de préparation et les compositions pharmaceutiques qui les contiennent | |
| FR2792634A1 (fr) | Derives de 2-alcoxy-cyclobutene-3,4-dione leur preparation et leur application en therapeutique | |
| KR960007523B1 (ko) | 4-아릴카르보닐-1-[(4-모르폴리닐)-저급-알킬]-1h-인돌, 그 제조 방법 및 이를 포함한 조성물 | |
| BE568943A (d) | ||
| BE566396A (d) | ||
| CH620678A5 (en) | Process for the preparation of a derivative of piperidine |