申请人:Takeda Chemical Industries, Ltd.
公开号:US04143042A1
公开(公告)日:1979-03-06
The present invention relates to novel 1-azaxanthone-3-carboxylic acid and its derivatives usable for effective medicines for the treatment of allergic diseases, which are shown by the following formula (I) ##STR1## wherein R.sub.1 is hydrogen, alkyl, phenyl, carboxyl, hydroxyl, alkoxy or amino group which may be unsubstituted or substituted by one alkyl, m is 0, 1 or 2 and R.sub.2 is alkyl, alkoxy, halogen, nitro, hydroxy, carboxyl, butadienylene (--CH.dbd.CH--CH.dbd.CH--) which forms a benzene ring with any adjacent carbon atoms or amino group which may be unsubstituted or substituted by at least one alkyl, and their physiologically acceptable salts.
本发明涉及新型1-氮杂黄酮-3-羧酸及其衍生物,可用于治疗过敏性疾病的有效药物,其化学式如下:(I)其中,R1为氢、烷基、苯基、羧基、羟基、烷氧基或氨基基团,可以未被取代或被一个烷基取代,m为0、1或2,R2为烷基、烷氧基、卤素、硝基、羟基、羧基、丁二烯基(--CH.dbd.CH--CH.dbd.CH--),与任何相邻的碳原子形成苯环或氨基基团,可以未被取代或被至少一个烷基取代,以及其生理上可接受的盐。