Azabicyclo derivatives of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein A is a group of formula (a), (b) or (c): ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.10 alkyl, aralkyl or di(C.sub.1 -C.sub.4) alkylamino(C.sub.1 -C.sub.6)alkyl; R.sub.2, R.sub.3 and R.sub.4 may be the same or different and each is hydrogen, amino, halogen, C.sub.1 -C.sub.4 alkoxy or phthalimide; X is O or NH; R is C.sub.1 -C.sub.4 alkyl; and Y is NR, O or S; having 5-HT.sub.3 receptor antagonist activity.
公式(I)的氮杂环衍
生物及其药学上可接受的盐:##STR1## 其中A是式(a)、(b)或(c)的基团:##STR2## 其中R.sub.1是氢、C.sub.1-C.sub.10烷基、芳基烷基或二(C.sub.1-C.sub.4)烷基
氨基(C.sub.1-C.sub.6)烷基;R.sub.2、R.sub.3和R.sub.4可以相同也可以不同,且每个都是氢、
氨基、卤素、C.sub.1-C.sub.4烷氧基或邻苯二甲
酰亚胺基;X是O或NH;R是C.sub.1-C.sub.4烷基;Y是NR、O或S;具有5-HT.sub.3受体拮抗活性。