The present invention relates to new compounds of the formula ##STR1## and the pharmaceutically acceptable salts thereof and the enantiomers thereof, wherein R.sup.1 is H, lower alkyl, alkenyl, aralkyl, or C(O)R.sup.2 wherein R.sup.2 is lower alkyl, alkenyl, alkoxy, or aralkyl; n is an integer of from 2-4; m is an integer of from 0-4; A is S(O).sub.x wherein x is an integer of from 0-2; and Ar is phenyl or thienyl. These compounds are useful as analgesics.
本发明涉及新化合物的公式如下:##STR1##以及其药学上可接受的盐和其对映体,其中R.sup.1为H、较低的烷基、烯基、芳基甲基或C(O)R.sup.2,其中R.sup.2为较低的烷基、烯基、烷氧基或芳基甲基;n为2-4的整数;m为0-4的整数;A为S(O).sub.x,其中x为0-2的整数;Ar为苯基或
噻吩基。这些化合物可用作镇痛剂。