Chiral discrimination of natural isoflavanones using (R)- and (S)-BINOL as the NMR chiral solvating agents
作者:Jingyu Yi、Guoxin Du、Yaxi Yang、Yuanchao Li、Yiming Li、Fujiang Guo
DOI:10.1016/j.tetasy.2016.09.002
日期:2016.12
Commercially available chiral solvating agents (R)- and (S)-BINOL were applied to the enantiodifferentiation of natural isoflavanones via H-1 NMR spectroscopy. The absolute configurations of the enantiomers of isoflavanones including sativanone 1, 3'-0-methylviolanone 2, and homoferreirin 3 were assigned by comparing the corresponding delta(R) and delta(S) values. This approach provided a simple and general means to tentatively assign the enantiomeric purity and absolute configuration of isoflavanones. (C) 2016 Elsevier Ltd. All rights reserved.