申请人:Takeda Chemical Industries, Ltd.
公开号:US04539326A1
公开(公告)日:1985-09-03
The present invention relates to novel 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine derivatives useful for effective medicines for the treatment of various connective tissue diseases such as chronic rheumatoid arthritis and varieties of inflammatory diseases caused by immunoreaction, which have the following formula: ##STR1## wherein R is the same or different and represents hydrogen, alkyl, alkoxy, nitro, hydroxyl, acyl, hydroxyalkyl, halogen with the proviso that m is 1,2 or 3, or a tetramethylene (--(CH.sub.2).sub.4 --) or butadienylene (--CH.dbd.CH--CH.dbd.CH--) group which, in conjunction with two adjacent carbon atoms on the ring, forms a six-membered ring with the proviso that m is 1; n is 1 or 2, or a physiologically acceptable salt or ester thereof.
本发明涉及一种新型5-氧代-5H-[1]苯并吡喃[2,3-b]吡啶衍生物,其可用于治疗各种结缔组织疾病,如慢性类风湿性关节炎和由免疫反应引起的多种炎症性疾病,其化学式如下:##STR1## 其中,R是相同或不同的氢、烷基、烷氧基、硝基、羟基、酰基、羟基烷基、卤素,其中m为1、2或3,或四亚甲基(--(CH.sub.2).sub.4 --)或丁二烯亚甲基(--CH.dbd.CH--CH.dbd.CH--)基团,与环上两个相邻的碳原子结合形成六元环,其中m为1;n为1或2,或其生理上可接受的盐或酯。