XB-ART-14378
J Med Chem
1998 Aug 27;4118:3507-14. doi: 10.1021/jm980238m.
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Synthesis and biological activity of conformationally restricted analogues of milnacipran: (1S, 2R)-1-phenyl-2-[(R)-1-amino-2-propynyl]-N,N- diethylcyclopropanecarboxamide is a novel class of NMDA receptor channel blocker.
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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 Ki value of 0.29 microM. 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.
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