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.
本发明涉及式I的新型杂环化合物(以及其药学上可接受的盐);##STR1##其中:R.sup.1是氢,(1-8C)烷基或苯基(1-4C)烷基;R.sup.2是(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分别选自氢和(1-6C)烷基;其中苯环和/或一个或多个所述苯或苯环基团可以选择性地未被取代或被一个或多个取代基取代,所述取代基是独立地从卤代基,(1-4C)烷基,(3-6C)烯基,(1-4C)烷氧基,氰基,三氟甲基基,硝基,羧基,(1-4C)烷基氨基,直链或分支的烷基氨基,(1-4C)烷基硫醇基,(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)烷基二氧基烷基中独立选择的;但不包括其中R.sup.1,R.sup.3,R.sup.4和R.sup.5均为甲基,苯环未被取代且R.sup.2为乙基的化合物及其药学上可接受的盐。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作用,特别是通过窦房结调节的有益作用。还包括制备式I化合物(或药学上可接受的盐)的方法和制药组合物。