A Highly Stereospecific and Efficient Synthesis of Homopentafluoro- phenylalanine
作者:I. Ramesh Babu、Edward K. Hamill、Krishna Kumar
DOI:10.1021/jo049206z
日期:2004.8.1
A short and efficientsynthesis of homopentafluorophenylalanine (6) from oxazolidine aldehyde 1 in 57% overall yield and in >98% ee is described. The enantiomeric excess of the product was determined by 19F NMR analysis of the coupling product derived from 5 and l-Ser(O-t-Bu)-OCH3, by comparison to a dipeptide obtained from racemic 5.
描述了由恶唑烷醛1快速有效地合成高五氟苯基丙氨酸(6),总产率为57%,ee≥98 %。通过与由外消旋5获得的二肽相比,由5和1- Ser(O- t- Bu)-OCH 3衍生的偶联产物的19 F NMR分析确定产物的对映体过量。