Hypotensive long-acting 1,4-dihydropyridines of the formula ##STR1## in which R.sup.1 is phenyl or heterocyclic, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the usual definitions in such compounds, R.sup.6 represents hydrogen or a lower alkyl radical or the trifluoromethyl group, R.sup.7 and R.sup.8 each denote a hydrogen atom or a fluorine atom, n.gtoreq.1 and m.gtoreq.0, and the sum of n and m must be a least 4, and X represents a single bond, an oxygen atom or the group --N(alkyl)--O.sub.2 S--, or pharmacologically acceptable acid addition salts thereof.
[EN] INDUSTRIAL PROCESS FOR THE SYNTHESIS OF ISOBUTYL METHYL 1,4-DIHYDRO-2,6-DIMETHYL-4-(2-NITROPHENYL)-3,5-PYRIDINE DICARBOXYLATE (NISOLDIPINE)<br/>[FR] PROCEDE INDUSTRIEL DE SYNTHESE D'ISOBUTYL METHYL 1,4-DIHYDRO-2,6-DIMETHYL-4-(2-NITROPHENYL)-3,5-PYRIDINE DICARBOXYLATE (NISOLDIPINE)
申请人:ERREGIERRE SPA
公开号:WO2004002958A1
公开(公告)日:2004-01-08
Synthetic process of isobutyl methyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)3,5-pyridine dicarboxylate (Nisoldipine) comprising on the reaction of isobutyl 2-(2-nitrobenzylidene)acetoacetate with methyl 3-aminocrotonate in an apolar solvent.
Industrial process for the synthesis of isobutyl methyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridine dicarboxylate (nisoldipine)
申请人:Ferrari Massimo
公开号:US20050240022A1
公开(公告)日:2005-10-27
Synthetic process of isobutyl methyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)3,5-pyridine dicarboxylate (Nisoldipine) comprising on the reaction of isobutyl 2-(2-nitrobenzylidene)acetoacetate with methyl 3-aminocrotonate in an apolar solvent.