Direct peptide coupling of novel amino acid derivatives produced by rearrangement of catalytically generated ammonium ylides
作者:J.Stephen Clark、Mark D. Middleton
DOI:10.1016/s0040-4039(03)01778-7
日期:2003.9
ester is aryl-tethered to an allylic amine, by catalytic intramolecular ammonium ylide generation and [2,3] rearrangement. When the aryl tether is sufficiently electron-deficient, direct coupling of the rearrangement product with a hindered amino acid ester to give a dipeptide is possible, and ammonium ylide generation, rearrangement and peptide coupling can be accomplished in a one-pot fashion.
受保护的氨基酸可以通过催化分子内铵盐生成和[2,3]重排,从其中重氮酯被芳基束缚到烯丙基胺的底物制备。当芳基系链足够缺乏电子时,重排产物与受阻氨基酸酯的直接偶联是可能的,以得到二肽,并且叶内铵盐的生成,重排和肽偶联可以一锅法完成。