作者:Xuyuan Gu、Xuejun Tang、Scott Cowell、Jinfa Ying、Victor J. Hruby
DOI:10.1016/s0040-4039(02)01338-2
日期:2002.9
A novel strategy toward the syntheses of [6,5]-bicyclic beta-turn dipeptides has been developed starting from delta,epsilon-unsaturated amino acids. This is the first example showing that this scaffold can be synthesized front a terminal alkene using a trifluoroacetyl protected amino acid. Both enantiomers of the delta,epsilon-unsaturated amino acid were synthesized by a modified method using Ni(II)-complexes. (C) 2002 Elsevier Science Ltd. All rights reserved.