Stereoselective synthesis of 5-[(1S)-N-Boc-amino-(2S)-(3-fluorophenyl)ethyl]-dihydrofuran-2-one
作者:Bryan Li、Richard A. Buzon、Charles K.-F. Chiu、Stephen T. Colgan、Matthew L. Jorgensen、Narasim Kasthurikrishnan
DOI:10.1016/j.tetlet.2004.07.097
日期:2004.9
A short, efficient, and highly diastereoselective synthesis of 5-[(1S)-N-Boc-amino-(2S)-(3-fluorophenyl)ethyl]-dihydrofuran-2-one (1) is described. Use of phthalic anhydride as thiolate scavenger effectively preserves the chiral integrity of the α-aminoketone 4 product obtained from the reaction of organozincate 3 with thioester 2.
描述了5-[(1S)-N -Boc-氨基-(2S)-(3-氟苯基)乙基]-二氢呋喃-2-酮(1)的短,有效且高度非对映选择性的合成。邻苯二甲酸酐作为硫醇盐清除剂的使用有效地保持了由有机锌酸酯3与硫酯2的反应获得的α-氨基酮4产物的手性完整性。