申请人:——
公开号:US05064826A1
公开(公告)日:1991-11-12
This invention relates to novel triazolopyrimidine derivatives of formulae (Ia) and (Ib), ##STR1## wherein Q represents hydrogen, a heterocyclic group optionally substituted by a C.sub.1-4 alkyl group and containing one or more oxygen and/or nitrogen atoms or a group of formula --SR.sup.1 wherein R.sup.1 is alkyl or aralkyl, or a group of formula --NR.sup.2 R.sup.3 wherein R.sup.2 and R.sup.3 are independently hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl or a heterocyclic group, m and n are independently 0, 1, 2, 3 or 4, with the provision that if m stands for 0, then n is different from 0, and if both n and m are 1 or m stands for 0 and n is 2, the Q is different from methylthio or morpholino group, their mixtures or pharmaceutically acceptable salts. Furthermore, the invention relates to a process for preparing these compounds. The compounds of formulae (Ia) and (Ib) are able to inhibit the ptosis caused by tetrabenazine and they have analgetic activity.
本发明涉及式(Ia)和(Ib)的新型三唑嘧啶衍生物,其中Q代表氢,一个杂环基,可选地被C.sub.1-4烷基取代,并含有一个或多个氧和/或氮原子,或者是一个式--SR.sup.1的基团,其中R.sup.1是烷基或芳基烷基,或者是一个式--NR.sup.2 R.sup.3的基团,其中R.sup.2和R.sup.3独立地是氢、烷基、烯烃基、环烷基、芳基烷基、芳基或杂环基,m和n独立地为0、1、2、3或4,但要注意,如果m为0,则n不为0,如果n和m都为1或m为0且n为2,则Q不是甲硫基或吗啉基,它们的混合物或药用可接受的盐。此外,本发明涉及一种制备这些化合物的方法。式(Ia)和(Ib)的化合物能够抑制四苯嗪引起的眼睑下垂,并具有镇痛活性。