compounds and method for treating negative symptoms of schizophrenia in humans.

摘要

to prevent or treat compound negative symptoms of schizophrenia in humans.according to formula (i) in which the symbols have the meanings: x represents a group - h, - ch3 or - ch2 - o - r; r is a h, an alkyl group with 1 - 3 (c).- co (ch2) n - ch3 or - co (ch2) - cooh; y is h, oh; y is h,cl and the n-oxides and the pharmacologically acceptable acid addition salts of these compounds and therapeutically used for this purpose.