申请人:G. D. Searle & Company
公开号:US05252563A1
公开(公告)日:1993-10-12
A class of 5,6,7,8-tetrahydro-imidazo[1,2-a]pyrimidine compounds is described for treatment to reduce neurotoxic injury associated with anoxia or ischemia which typically follows stroke, cardiac arrest, hypoglycemia or perinatal asphyxia. The treatment includes administration of a compound of this class alone or in a composition in an amount effective as an antagonist to inhibit excitotoxic actions at major neuronal excitatory amino acid receptor sites. Compounds of most interest are those of the formula: ##STR1## wherein Y.sub.m is --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --; wherein m is one; wherein A is selected from phosphonic acid/ester moieties and phosphonamide moities and wherein the A moiety is attached at the 5- or 7-ring position of the terahydro-imidazo[1,2-a]pyrimidine ring system; wherein B is selected from carboxylic acid/ester moieties and carboxamide moieties; wherein X is one or more groups attachable at one or more of the 5-, 6- or 7-ring positions not occupied by the A moiety; wherein each X and T is independently selected from hydrido, halo, alkyl, cycloalkyl, cycloalkylalkyl, haloalkyl, alkenyl, alkynyl, phenyl, benzyl, hydroxy, hydroxyalkyl, alkoxy, phenoxy, alkoxyalkyl, benzyloxy, cyano, alkanoyl, alkylthio, arylthio and amino; wherein V is selected from hydrido and alkyl; or a pharmaceutically-acceptable salt thereof.
本文描述了一类5,6,7,8-四氢
咪唑[1,2-a]
嘧啶化合物,用于治疗与缺氧或缺血相关的神经毒性损伤,通常发生在中风、心脏骤停、低血糖或围产期窒息之后。该治疗包括单独或以组合物形式给予该类化合物,用于抑制主要神经元兴奋性
氨基酸受体位点的兴奋毒性作用,从而发挥拮抗作用。最感兴趣的化合物是以下式子的化合物:##STR1## 其中Y.sub.m为--CH.sub.2--或--CH.sub.2--CH.sub.2--;其中m为1;其中A选自
磷酸/酯基团和
磷酰胺基团,且A基团附着在5-或7-环位于terahydro-imidazo[1,2-a]
嘧啶环系统;其中B选自
羧酸/酯基团和羧酰胺基团;其中X为可附着在5-、6-或7-环位于A基团未占据的一个或多个位置的一个或多个基团;其中每个X和T独立地选自氢、卤素、烷基、环烷基、环烷基烷基、卤代烷基、烯基、炔基、苯基、苄基、羟基、羟基烷基、烷氧基、苯氧基、烷氧基烷基、苄氧基、
氰基、烷酰基、烷
硫基、芳基
硫基和
氨基;其中V选自氢和烷基;或其药学上可接受的盐。