Efficient access to N-protected derivatives of (R,R,R)- and (S,S,S)-octahydroindole-2-carboxylic acid by HPLC resolution
作者:Francisco J. Sayago、Ana I. Jiménez、Carlos Cativiela
DOI:10.1016/j.tetasy.2007.09.006
日期:2007.9
The preparation of the proline analogue (2S,3aS,7aS)-octahydroindole-2-carboxylic acid (Oic) and its enantiomer, (2R,3aR,7aR)-Oic, is described. A racemic precursor has been synthesized in good yield and subjected to HPLC resolution on a chiral column. The high efficiency of both the synthetic and chromatographic procedures has allowed the isolation of multigram quantities of each amino acid in enantiomerically
描述了脯氨酸类似物(2 S,3a S,7a S)-八氢吲哚-2-羧酸(Oic)及其对映体(2 R,3a R,7a R)-Oic的制备。外消旋前体的合成产率高,并在手性色谱柱上进行了HPLC拆分。合成和色谱方法的高效率已允许分离出对映体纯形式的数克数量的每种氨基酸,并经过适当保护以用于肽合成。