Synthesis and Biological Activity of Conformationally Restricted Analogues of Milnacipran: (1<i>S</i>,2<i>R</i>)-1-Phenyl-2-[(<i>R</i>)-1-amino-2-propynyl]<i>-N,N-</i> diethylcyclopropanecarboxamide Is a Novel Class of NMDA Receptor Channel Blocker
作者:Satoshi Shuto、Shizuka Ono、Hiroaki Imoto、Kiyonori Yoshii、Akira Matsuda
DOI:10.1021/jm980238m
日期:1998.8.1
Conformationally restricted analogues of (+/-)-(Z)-2-aminomethyl-1-phenyl-N, N-diethylcyclopropanecarboxamide [milnacipran, (+/-)-1] were designed on the basis of its characteristic cyclopropane structure and were synthesized enantioselectively to develop efficient NMDA receptor antagonists. Among these analogues, (1S,2R)-1-phenyl-2-[(R)-1-amino-2-propynyl]- N,N-diethylcyclopropanecarboxamide (2d) had one of the most potent affinities for the receptor, with a K-i value of 0.29 mu M. The blockade of NMDA receptor channels expressed by Xenopus oocytes by 2d was investigated in detail, and 2d was identified as a new class of open channel blocker against this receptor.