申请人:Sandoz Ltd.
公开号:US04143143A1
公开(公告)日:1979-03-06
Compounds of formula I, ##STR1## wherein either R.sub.1 is hydroxy or alkoxy of 1 to 4 carbon atoms, and R.sub.2 is hydrogen, hydroxy or alkoxy of 1 to 4 carbon atoms, Or R.sub.1 and R.sub.2, together, are methylenedioxy, R.sub.3 is hydrogen or alkyl of 1 to 4 carbon atoms, and R.sub.4 is phenyl or phenyl substituted by 1, 2 or 3 substituents independently chosen from halogen, hydroxy, nitro or alkyl(C.sub.1-4) haloalkyl(C.sub.1-4), or alkoxy (C.sub.1-4), are useful as anti-arrhythmic agents.
式I的化合物,其中R.sub.1为1至4个碳原子的羟基或烷氧基,R.sub.2为1至4个碳原子的氢、羟基或烷氧基,或者R.sub.1和R.sub.2在一起为亚甲二氧基,R.sub.3为1至4个碳原子的氢或烷基,R.sub.4为苯基或经1、2或3个独立选择的卤素、羟基、硝基或烷基(C.sub.1-4)卤代烷基(C.sub.1-4)或烷氧基(C.sub.1-4)取代的苯基,可用作抗心律失常剂。