Stereoselective preparation of pyrrolidin-2-ones from a Z-enoate derived from d-(+)-mannitol
作者:Jorge L.O Domingos、Evanoel C Lima、Ayres G Dias、Paulo R.R Costa
DOI:10.1016/j.tetasy.2004.06.013
日期:2004.8
Chiral pyrrolidin-2-ones have been prepared through the reductive cyclisation of gamma-nitro-esters. These intermediates were obtained by syn-stereoselective conjugate addition of nitronates to a Z-enoate derived from D-(+)-mannitol. This route was used to prepare the cognitive enhancer (S)-WEB-1868. (C) 2004 Elsevier Ltd. All rights reserved.