申请人:Sawai Pharmaceutical Co., Ltd.
公开号:US04879295A1
公开(公告)日:1989-11-07
Compounds of the formula: ##STR1## wherein A is a C.sub.1-6 alkyl group, an aryl group which is unsubstituted or substituted with at least one substituent selected from hydroxy, alkoxy, aryl-(C.sub.1-6)alkoxy, C.sub.1-6 alkylcarbonyloxy, halo-(C.sub.1-6)alkyl, halogen, nitro and amino, or 5- or 6-membered heterocyclic group containing at least one hetero atom selected from oxygen, nitrogen and sulfur, or a condensed heterocyclic group consisting of a heterocycle as defined above and a benzene nucleus, these two heterocyclic groups being unsubstituted or substituted with at least one substituent selected from hydroxy, C.sub.1-6 alkyl and halogen, and R is hydrogen or a C.sub.1-6 alkyl group, or a pharmaceutically acceptable salt thereof are nobel and useful as antiallergic.
该化合物的结构式为:##STR1## 其中A是一个C.sub.1-6烷基基团,一个芳基团,未取代或取代,取代基包括至少一个羟基、烷氧基、芳基-(C.sub.1-6)烷氧基、C.sub.1-6烷基羰氧基、卤代-(C.sub.1-6)烷基、卤素、硝基和氨基,或者包含至少一个氧、氮和硫异原子的5-或6-成员杂环基团,或者由上述定义的杂环基团和苯核组成的缩合杂环基团,这两个杂环基团未取代或取代,取代基包括至少一个羟基、C.sub.1-6烷基和卤素,R是氢或C.sub.1-6烷基基团,或其药学上可接受的盐,用作抗过敏药物。