申请人:Boehringer Ingelheim GmbH
公开号:US04083980A1
公开(公告)日:1978-04-11
Compounds of the formula ##STR1## wherein A is --CH.dbd.CH--, --CH.dbd.N-- or --S--, R.sub.1 is hydrogen, lower alkyl, lower alkoxy, amino, acetylamino, cyano, tetrazol-5-yl, --COR.sub.3 or a fused benzene ring, Where R.sub.3 is lower alkoxy, amino, hydroxyamino, tetrazol-5-yl-amino or, when R.sub.2 is other than hydrogen, also hydroxyl, and R.sub.2 is cyano, tetrazol-5-yl, --COR.sub.4 or, when R.sub.1 is cyano, tetrazol-5-yl or --COR.sub.3, also hydrogen, lower alkyl, lower alkoxy, amino, acetylamino or a fused benzene ring, Where R.sub.4 is lower alkoxy, amino, hydroxyl, hydroxyamino or tetrazol-5-yl-amino; Non-toxic, pharmacologically acceptable acid addition salts thereof; and, when R.sub.3 and/or R.sub.4 are hydroxyl, non-toxic, pharmacologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as their salts are useful primarily as antiallergics.
化合物的公式为##STR1##其中A为--CH.dbd.CH--, --CH.dbd.N--或--S--, R.sub.1为氢,低烷基,低烷氧基,
氨基,乙酰
氨基,
氰基,
四唑-5-基,--COR.sub.3或融合的苯环,其中R.sub.3为低烷氧基,
氨基,羟
氨基,
四唑-5-基-
氨基,或当R.sub.2不是氢时,还可以是羟基,而R.sub.2为
氰基,
四唑-5-基,--COR.sub.4或当R.sub.1为
氰基,
四唑-5-基或--COR.sub.3时,还可以是氢,低烷基,低烷氧基,
氨基,乙酰
氨基或融合的苯环,其中R.sub.4为低烷氧基,
氨基,羟基,羟
氨基或
四唑-5-基-
氨基;其非毒性、药理学上可接受的酸盐;当R.sub.3和/或R.sub.4为羟基时,其与无机或有机碱形成的非毒性、药理学上可接受的盐。这些化合物及其盐主要用作抗过敏剂。