申请人:Recordati S.A., Chemical and Pharmaceutical Company
公开号:US04705797A1
公开(公告)日:1987-11-10
Novel antihypertensive and coronary dilating asymmetric diesters of 1,4-dihydro-2,6-dimethyl-pyridine-3,5-dicarboxylic acid (or the stereoisomers or pharmaceutically acceptable acid addition salts thereof) have the general formula (I): ##STR1## wherein Ph is phenyl, Ar is 2-nitrophenyl, 3-nitrophenyl, 2,3-dichlorophenyl or benzofurazan-4-yl, A is a straight or branched chain alkylene radical having from 2 to 6 carbon atoms, R is a straight or branched chain alkyl radical having from 1 to 6 carbon atoms, optionally mono-substituted by an alkoxy substituent having from 1 to 6 carbon atoms, R.sub.1 is hydrogen, hydroxy or an alkyl radical having from 1 to 4 carbon atoms, and R.sub.2 is hydrogen or methyl. The subject diesters are facilely prepared from the aldehydes ArCHO and esters of acetoacetic and 3-aminocrotonic acids.
新型降压和扩张冠状动脉的不对称二酯化合物是1,4-二氢-2,6-二甲基吡啶-3,5-二羧酸(或其立体异构体或药学上可接受的酸加合盐),其具有一般式(I):其中Ph是苯基,Ar是2-硝基苯基,3-硝基苯基,2,3-二氯苯基或苯并呋喃-4-基,A是直链或支链烷基,其具有2至6个碳原子,R是直链或支链烷基,其具有1至6个碳原子,可选地单取代为具有1至6个碳原子的烷氧基取代基,R.sub.1是氢,羟基或具有1至4个碳原子的烷基基团,R.sub.2是氢或甲基。这些二酯化合物可以从ArCHO的醛和乙酰丙酮酸和3-氨基巴豆酸的酯中容易地制备出来。