申请人:Tanabe Seiyaku Co., Ltd
公开号:US03932429A1
公开(公告)日:1976-01-13
A compound of the formula: ##SPC1## Wherein R.sup.1 is hydrogen, phenyl, alkyl of one to five carbon atoms, cycloalkyl of three to four carbon atoms, or alkyl of one to five carbon atoms having a substituent selected from the group consisting of phenyl, benzoyl and 4-fluorobenzoyl, R.sup.2 is hydrogen or alkyl of one to three carbon atoms, and R.sup.3 is hydrogen, alkanoyl of two to six carbon atoms, benzoyl or nicotinoyl, is disclosed. Several methods for preparing the compound (I) is also disclosed. The compound (I) and a pharmaceutically acceptable acid addition salt thereof are useful as analgesic agents.
化合物的式子为:##SPC1## 其中R.sup.1是氢、苯基、1-5个碳原子的烷基、3-4个碳原子的环烷基或1-5个碳原子的烷基,其取代基为苯基、苯甲酰基和4-氟苯甲酰基中的一种;R.sup.2是氢或1-3个碳原子的烷基;R.sup.3是氢、2-6个碳原子的烷酰基、苯甲酰基或烟酰基。此外,还公开了制备化合物(I)的多种方法。化合物(I)及其药学上可接受的酸盐是镇痛剂。