申请人:Les Laboratoires Beecham S.A.
公开号:US05051417A1
公开(公告)日:1991-09-24
A compound of formula (I) or a pharmaceutically acceptable salt thereof, ##STR1## in which, R.sub.1 is hydrogen or lower alkyl; R.sub.2 is hydrogen or lower alkyl; R.sub.4 and R.sub.4 ' together form a group .dbd.N--Ra, or .dbd.CRaRb, where Ra is hydrogen, lower alkyl, aryl, aryloxy, lower alkylcarbonyl, arylcarbonyl, aryloxycarbonyl, lower alkoxy, lower alkoxy carbonyl, lower alkoxy carbonyl alkoxy, lower thioalkoxy, hydroxy, nitrile, heterocyclyl, or --NRcRd, where Rc is hydrogen, lower alkyl, cycloalkyl, aryl, aralkyl, lower alkylcarbonyl, arylcarbonyl, aminocarbonyl, aminothiocarbonyl, aminoiminocarbonyl, lower alkoxycarbonyl, lower alkoxythiocarbonyl, aryloxycarbonyl, thiocarbonyl, nitrile, carboxyl, heterocyclyl or heterocyclylcarbonyl, and Rd is hydrogen or lower alkyl; Rb is hydrogen, lower alkyl, aryl, lower alkylcarbonyl, lower alkoxycarbonyl, nitrile or nitro; or R.sub.4 is --NH--Ra, in which Ra is as defined above, and R.sub.4 ' is hydrogen or lower alkyl; each of R.sub.3 and R.sub.5 is independently hydrogen, lower alkyl, aryl, lower alkylcarbonyl, arylcarbonyl, aralkylcarbonyl, heterocyclylcarbonyl, optionally substituted aminocarbonyl, lower alkoxycarbonyl or aryloxycarbonyl; R.sub.6 is hydrogen, lower alkyl or halogen; and A is sulphur, oxygen, --NH-- or --CH.sub.2 --, is useful for the treatment of heart disease.
化合物的化学式(I)或其药学上可接受的盐,其中,R.sub.1为氢或较低的烷基;R.sub.2为氢或较低的烷基;R.sub.4和R.sub.4'共同形成一个基团.dbd.N--Ra,或.dbd.CRaRb,其中Ra为氢,较低的烷基,芳基,芳氧基,较低的烷基羰基,芳基羰基,芳氧羰基,较低的烷氧基,较低的烷氧羰基,较低的烷氧羰基烷氧基,较低的硫代烷氧基,羟基,腈基,杂环烷基,或--NRcRd,其中Rc为氢,较低的烷基,环烷基,芳基,芳基烷基,较低的烷基羰基,芳基羰基,氨基羰基,氨基硫代羰基,氨基亚胺羰基,较低的烷氧羰基,较低的烷氧硫代羰基,芳氧羰基,硫代羰基,腈基,羧基,杂环烷基或杂环烷基羰基,且Rd为氢或较低的烷基;Rb为氢,较低的烷基,芳基,较低的烷基羰基,较低的烷氧羰基,腈基或硝基;或R.sub.4为--NH--Ra,其中Ra如上定义,且R.sub.4'为氢或较低的烷基;R.sub.3和R.sub.5中的每一个独立地为氢,较低的烷基,芳基,较低的烷基羰基,芳基羰基,芳基烷基羰基,杂环烷基羰基,可选择地取代的氨基羰基,较低的烷氧羰基或芳氧羰基;R.sub.6为氢,较低的烷基或卤素;A为硫,氧,--NH--或--CH.sub.2--,用于治疗心脏病。