A series of non-opiate analgesics of Formula I ##STR1## wherein R.sup.1 is hydrogen, alkyl, aralkyl, or aryloxyalkyl; R.sup.2 is alkyl or hydrogen; and R.sup.3 and R.sup.4 are independently selected from hydrogen, alkyl, acyloxy, alkoxy, alkylthio, halogen, hydroxyl, or trifluoromethyl; or a pharmaceutically acceptable acid addition salt.
一系列
化学式为I的非阿片类镇痛剂,其中R1为氢、烷基、芳基烷基或芳基氧烷基;R2为烷基或氢;R3和R4独立地选择氢、烷基、酰氧基、烷氧基、烷基
硫基、卤素、羟基或三
氟甲基;或其药学上可接受的酸盐。