Compounds of the formula I
wherein rings A and B are each unsubstituted or substituted; Y is oxygen, sulfur, sulfinyl or sulfonyl; one of the symbols Z, and Z2 is halogen and the other formyl; and pharmaceutically acceptable salts of such compounds that contain a salt-forming group are useful for the treatment of diseases of the respiratory tract and of liver diseases. They are prepared by methods known per se.
式 I 的化合物
其中,环 A 和环 B 各自是未取代的或取代的;Y 是氧、
硫、亚砜基或磺酰基;符号 Z 和 Z2 中的一个是卤素,另一个是甲酰基;以及含有成盐基团的此类化合物的药学上可接受的盐,可用于治疗呼吸道疾病和肝脏疾病。它们是通过本身已知的方法制备的。