作者:M.Carmen Fernández、José M Quintela、Marı́a Ruiz、Vicente Ojea
DOI:10.1016/s0957-4166(02)00082-4
日期:2002.3
Conjugate additions of the lithiated bis-lactim ether derived from cyclo-[Gly-D-Val] 1 to alpha-substituted vinylphosphonates 2 or electrophilic substitutions on the lithiated bis-lactim ether derived from cyclo-[L-AP4-D-Val] 5 allow direct and stereoselective access to a series of 4-substituted AN derivatives 3 in enantiomerically pure form. (C) 2002 Elsevier Science Ltd. All rights reserved.