A compound of formula (I), or a pharmaceutically acceptable salt thereof: ##STR1## wherein X is halogen, trifluoromethyl, cyano, C.sub.1-6 -alkoxy, C.sub.1-6 -alkylthio, C.sub.1-6 -alkylamino or C.sub.1-6 -dialkylamino; R.sup.1 and R.sup.4 are H or straight or branched C.sub.1-6 -alkyl or trifluoromethyl or R.sup.1 and R.sup.4 together form a cycloalkyl ring; Y is O, S, SO.sub.2, NH or N-alkyl; R.sup.5 is selected from optionally substituted heterocycles. R.sup.6 and R.sup.7 are hydrogen, benzoyl or C.sub.1-6 -alkanoyl. The compounds have been found useful for treating central nervous system and cardiovascular ailments.
化合物式(I)或其药学上可接受的盐:##STR1##
其中,X为卤素,三
氟甲基,
氰基,C.sub.1-6-烷氧基,C.sub.1-6-烷基
硫基,C.sub.1-6-烷基
氨基或C.sub.1-6-二烷基
氨基;R.sup.1和R.sup.4为H或直链或支链C.sub.1-6-烷基或三
氟甲基,或R.sup.1和R.sup.4共同形成环烷基;Y为O,S,SO.sub.2,NH或N-烷基;R.sup.5选自可选取的取代杂环。R.sup.6和R.sup.7为氢,苯甲酰基或C.sub.1-6-烷酰基。已发现这些化合物对治疗中枢神经系统和心血管疾病有用。