Novel naphtho[2,3-b]thiophen-9(4H)-ones of the formula ##STR1## wherein R is loweralkyl or arylloweralkyl; X and Y are independently hydrogen, loweralkyl, halogen, loweralkoxy, or trifluoromethyl; W is CH.sub.2, CHOH, or C.dbd.O; n is 1 or 2; an optical isomer or pharmaceutically acceptable salt thereof, processes for the preparation thereof, and methods of alleviating pain utilizing compounds or compositions thereof are disclosed.
公开了式子为##STR1##的新奈曲[2,3-b]
噻吩-9(4H)-酮,其中R为低碳基或芳基低碳基;X和Y独立地为氢、低碳基、卤素、低甲氧基或三
氟甲基;W为CH.sub.2、CHOH或C.dbd.O;n为1或2;其光学异构体或药学上可接受的盐,制备过程以及利用化合物或其组合物缓解疼痛的方法。