Compounds of formula ##STR1## (wherein R, R.sub.1, R.sub.2 and Y have the meanings indicated in the description), a process for the preparation thereof and pharmaceutical compositions containing them as active ingredient are described. Compounds of formula I exhibit anto-serotonin activity.
式##STR1##的化合物(其中R、R1、R2和Y具有说明书中所指示的含义),其制备方法以及含有它们作为活性成分的药物组合物被描述。式I化合物表现出抗
血清素活性。