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 are shown by the following formula:
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 (-(CH2)4-) or butadienylene (-CH=CH-CH=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.
本发明涉及新型 5-氧代-5H-[1]苯并
吡喃并[2,3-b]
吡啶衍生物,它是治疗各种结缔组织疾病,如慢性类风湿性关节炎和各种由免疫反应引起的炎症性疾病的有效药物,如下式所示:
其中 R 相同或不同,代表氢、烷基、烷氧基、硝基、羟基、酰基、羟烷基、卤素,但 m 为 1、2 或 3,或代表四亚甲基(-(
CH2)4-)或
丁二烯(-CH=CH-CH=CH-)基团,该基团与环上相邻的两个碳原子结合形成六元环,但 m 为 1;n 为 1 或 2,或其生理上可接受的盐或酯。