申请人:Pfizer Inc.
公开号:US04891372A1
公开(公告)日:1990-01-02
An antiarrhythmic agent of the formula ##STR1## or a pharmaceutically acceptable salt thereof; wherein R.sup.1 is H, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; X is O, ##STR2## or a direct link; and R.sup.2 and R.sup.3, which are the same or different, are each C.sub.1 -C.sub.4 alkyl, with the proviso that when X is ##STR3## R.sup.2 and R.sup.3 are the same.
一种抗心律失常药剂,其分子式为##STR1##或其药用可接受的盐;其中R.sup.1为H、C.sub.1 -C.sub.4烷基或C.sub.1 -C.sub.4烷氧基;X为O、##STR2##或直接链接;R.sup.2和R.sup.3,相同或不同,均为C.sub.1 -C.sub.4烷基,但当X为##STR3##时,R.sup.2和R.sup.3相同。