申请人:Hoffmann-La Roche Inc.
公开号:US04489003A1
公开(公告)日:1984-12-18
There are described novel pharmaceutically active substances which have a pronounced affinity to the central benzodiazepine receptors and which have only a low toxicity. These active substances, namely imidazobenzodiazepines of the formula ##STR1## wherein A is lower alkylene, n is zero or 1, R.sup.1 is lower alkynyl, lower alkenyl, aryl, (C.sub.3-8)-cycloalkyl optionally substituted by lower alkyl or (C.sub.5-8)-cycloalkenyl optionally substituted by lower alkyl, or a 5- or 6-membered saturated or unsaturated heterocycle which contains an oxygen or sulphur atom as a ring member and which is optionally substituted by lower alkyl, R.sup.4 and R.sup.5 each are hydrogen, halogen, trifluoromethyl, cyano, nitro, amino or lower alkyl and either R.sup.2 is hydrogen and R.sup.3 is lower alkyl or R.sup.2 and R.sup.3 together are dimethylene, trimethylene or propenylene, the compounds of formula I in which R.sup.2 and R.sup.3 together are dimethylene, trimethylene or propenylene having the (S) or (R,S) configuration with reference to the carbon atom denoted by .gamma., and their pharmaceutically acceptable acid addition salts, can be used as medicaments in the form of pharmaceutical preparations, especially in the control of convulsions and anxiety states and/or in the partial or complete antagonization of some or all activities which 1,4-benzodiazepines having tranquillizing activity or other substances display via the central benzodiazepine receptors.
本文描述了一种新型药物活性物质,其对中枢苯二氮平受体具有显著的亲和力,且毒性较低。这些活性物质是公式I中的咪唑苯二氮平,其中A为较低的烷基,n为零或1,R1为较低的炔基、较低的烯基、芳基、(C3-8)-环烷基(可选地被较低的烷基取代)或(C5-8)-环烯基(可选地被较低的烷基取代)、或含有氧或硫原子作为环成员的5-或6-成员饱和或不饱和杂环,且可选地被较低的烷基取代,R4和R5分别为氢、卤素、三氟甲基、氰基、硝基、氨基或较低的烷基,而R2为氢且R3为较低的烷基或R2和R3一起为二甲亚烷、三甲亚烷或丙烯亚烷,公式I中R2和R3一起为二甲亚烷、三甲亚烷或丙烯亚烷的化合物相对于被标记为γ的碳原子具有(S)或(R,S)构型,它们的药学上可接受的酸盐加合物可以作为药物制剂使用,特别是在控制惊厥和焦虑状态和/或部分或完全拮抗一些或所有1,4-苯二氮平具有镇静作用或其他物质通过中枢苯二氮平受体显示的活性方面。