申请人:Imperial Chemical Industries PLC
公开号:US05328910A1
公开(公告)日:1994-07-12
This invention concerns novel heterocyclic compounds of formula I (and pharmaceutically-acceptable salts thereof); ##STR1## wherein: R.sup.1 is hydrogen, (1-8C)alkyl or phenyl(1-4C)alkyl; R.sup.2 is (1-6)alkyl, phenyl(1-4C) alkyl, (3-6C)cycloalkyl, (3-6C) cycloalkyl(1-4C)alkyl, (3-6C)cycloalkyl, phenyl(1-4C)alkyl, (3-6C)cycloalkyl, (3-6C)cycloalkyl(1-4C)alkyl, phenyl or (3-6C)alkenyl; R.sup.4 and R.sup.5 are independently selected from hydrogen and (1-6C)alkyl; and wherein the phenyl ring and/or one or more of said phenyl or benzene moieties may optionally be unsubstituted or substituted by one or more substituents independently selected from halogeno, (1-4C)alkyl, (3-6C)alkenyl, (1-4C)alkoxy, cyano, trifluoromethyl, nitro, carboxy, (1-4C)alkylamino, dialkylamino of up to six carbon atoms, (1-4C)alkylthion, (1-4C)alkylsulphinyl, (1-4C)alkylsulphonyl and (1-4C)alkylsulphonyl and (1-4C)alkylenedioxy; but excluding the compound in which R.sup.1, R.sup.3, R.sup.4 and R.sup.5 are each methyl, the phenyl ring is unsubstituted and R.sup.2 is ethyl, and its pharmaceutically-acceptable salt. The compound of formula I (and pharmaceutically-acceptable salts thereof) possess beneficial effects on the cardiovascular system, and in particular beneficial effects modulated via the sino-atrial node. Also included are processes for the manufacture of compounds of the formula I (or a pharmaceutically-acceptable salt), and pharmaceutical compositions.
本发明涉及公式I的新型杂环化合物(及其药学上可接受的盐);其中:R.sup.1为氢,(1-8C)烷基或苯基(1-4C)烷基;R.sup.2为(1-6)烷基,苯基(1-4C)烷基,(3-6C)环烷基,(3-6C)环烷基(1-4C)烷基,(3-6C)环烷基,苯基(1-4C)烷基,(3-6C)环烷基,(3-6C)环烷基(1-4C)烷基,苯基或(3-6C)烯基;R.sup.4和R.sup.5独立地选自氢和(1-6C)烷基;其中苯环和/或所述苯基或苯环中的一个或多个可以选择地未取代或取代,所述取代基独立地选自卤素、(1-4C)烷基、(3-6C)烯基、(1-4C)烷氧基、氰基、三氟甲基、硝基、羧基、(1-4C)烷基氨基、直链烷基氨基,(1-4C)烷基硫醇、(1-4C)烷基亚磺酰基、(1-4C)烷基磺酰基和(1-4C)烷基磺酰基和(1-4C)烷基乙二氧基;但不包括其中R.sup.1、R.sup.3、R.sup.4和R.sup.5均为甲基,苯环未取代,R.sup.2为乙基及其药学上可接受的盐。公式I的化合物(及其药学上可接受的盐)对心血管系统具有有益的影响,特别是通过窦房结调节的有益影响。还包括制造公式I(或药学上可接受的盐)化合物的过程和制药组合物。