New carboxyalkyl inhibitors of brain enkephalinase: synthesis, biological activity and analgesic properties
作者:Marie Claude Fournie-Zaluski、Pierre Chaillet、Evelyne Soroca-Lucas、Helene Marcais-Collado、Jean Costentin、Bernard P. Roques
DOI:10.1021/jm00355a013
日期:1983.1
synthesized and checked as inhibitors of "enkephalinase", a metalloendopeptidase cleaving the Gly3-Phe4 bond of enkephalins from mouse striatal membranes. Differential recognition of both brain enkephalinase and angiotensin-converting enzyme (ACE) catalytic sites by these carboxylalkyl compounds lead to potent (KI approximately 0.5 microM), competitive and selective inhibitors of the enkephalin-degrading
合成了衍生自Phe-Leu和Phe-Ala的新羧烷基化合物,并将其作为“脑啡肽酶”的抑制剂进行检查,这是一种从小鼠纹状体膜上裂解脑啡肽的Gly3-Phe4键的金属内肽酶。这些羧烷基化合物对脑脑啡肽酶和血管紧张素转化酶(ACE)催化位点的差异识别会导致脑啡肽降解酶的有效抑制剂(KI约为0.5 microM),竞争性和选择性抑制剂。最有趣的化合物N-[((RS)-2-羧基-3-苯基丙酰基] -L-亮氨酸(3,KI = 0.34 microM))对脑啡肽酶的效力是ACE活性的10000倍。小鼠脑室内(icv)注射3可以增强外源性D-Ala2-Met-脑啡肽的镇痛作用,证明体内对脑啡肽酶的抑制作用。而且,单独给予icv 3可以在热板试验和扭体试验中测出小鼠的剂量依赖性镇痛作用。在以前的分析中,每只动物的ED50约为10微克,略高于硫醇。纳洛酮拮抗了所有的抗伤害感受作用,表明脑啡肽参与了镇痛作用,并