2-Substituted thiazolidines compounds having formula I
wherein X is a CH2, O or S, R is hydroxy or an acyloxy, alkyloxy, alkenyloxy or alkinyloxy group, R, is hydrogen or a group of formula
R2 is hydrogen or a free or esterified carboxy group, Ra and Rb are hydrogen or methyl, p is zero or 1, R3 is hydrogen, a C1-C2 alkylsulphonyl group, a phenyl or p-Cl phenyl, p-methylsulphonyl group or an acyl group; are useful as mucus regulating, antitussive and antibronchospastic agents.
具有式 I 的 2-取代
噻唑烷化合物 其中 X 是
CH2、O 或 S,R 是羟基或酰氧基、烷氧基、烯氧基或炔氧基,R, 是氢或式 R2 的基团是氢或游离或酯化的羧基,Ra 和 Rb 是氢或甲基,p 是 0 或 1,R3 是氢、C1-C2 烷基磺酰基、苯基或对
氯苯基、对甲基磺酰基或酰基;可用作粘液调节剂、止咳药和抗支气管痉挛药。