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US5670505A Piperazine derivatives 失效
哌嗪衍生物

Piperazine derivatives
摘要:
A piperazine compound of the formula: ##STR1## wherein: X is carbonyl or sulfonyl; Y is a direct bond or lower alkylene; and R.sub.1, R.sub.2, R.sub.3, R.sub.4 are as defined herein. The compounds are advantageously used as Tachykinin antagonists in the treatment of respiratory diseases, ophthalmic diseases and inflammatory diseases, for example.
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