A compound of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, lower alkyl, lower alkenyl, aryl or ar(lower)alkyl, R.sup.4 is imidazolyl, which may have alkyl or imino-protective group as substituents, or pyridyl, A is lower alkylene, and is single bond or double bond, and pharmaceutically acceptable salts thereof, having 5-HT antagonism.
一种化合物,其
化学式为:##STR1## 其中,R.sup.1、R.sup.2和R.sup.3分别为氢、低碳基、低烯基、芳基或芳基(低)烷基,R.sup.4为
咪唑基,可以具有烷基或
亚胺保护基作为取代基,或为
吡啶基,A为低碳基烷基,且为单键或双键,以及其药学上可接受的盐,具有5-HT拮抗作用。