申请人:Chemie Linz Aktiengesellschaft
公开号:US04581460A1
公开(公告)日:1986-04-08
Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 are hydrogen, halogen, methyl or methoxy and R.sub.3, R.sub.4 and R.sub.5 are hydrogen, methyl or an electronegative substituent from the group consisting of halogen, C.sub.1 to C.sub.4 -alkoxy, cyano, nitro or methylsulfonyl, with the proviso that one of the radicals R.sub.3 to R.sub.5 is always the electronegative substituent of said group, and pharmaceutically acceptable acid addition salts thereof; the compounds as well as the salts are useful as analgesics.
式为##STR1##的化合物,其中R.sub.1和R.sub.2为氢、卤、甲基或甲氧基,R.sub.3、R.sub.4和R.sub.5为氢、甲基或来自卤、C.sub.1至C.sub.4-烷氧基、氰、硝基或甲烷磺酰基等电负取代基的一种,但其中的R.sub.3至R.sub.5中必须有一个为所述基团的电负取代基。该化合物及其药学上可接受的酸盐可用作镇痛剂。