Aziridinium from <i>N</i>,<i>N</i>-Dibenzyl Serine Methyl Ester: Synthesis of Enantiomerically Pure β-Amino and α,β-Diamino Esters
作者:Cédric Couturier、Jérome Blanchet、Thierry Schlama、Jieping Zhu
DOI:10.1021/ol060700u
日期:2006.5.1
Reaction of N,N-dibenzyl-O-methylsulfonyl serine methyl ester with a variety of heteronucleophiles (sodium azide, sodium phthalimide, amines, thiols) and carbanions (sodium malonate) gave, via an aziridinium intermediate, the corresponding beta-amino or alpha,beta-diamino ester in good to excellent yield. A short synthesis of orthogonally protected and enantiomerically pure 2,3-diamino propionate (Dap) is described.