The first enantioselective synthesis of trans- and cis-dihydroflavonols
作者:Hendrik van Rensburg、Pieter S. van Heerden、Barend C. B. Bezuidenhoudt、Daneel Ferreira
DOI:10.1039/cc9960002747
日期:——
Epoxidation of a series of polyoxygenated chalcones with H2O2 in the presence of poly(α-amino acid) catalysts, followed by Lewis acid-catalysed phenylmethanethiol ring-opening and cyclization, afforded trans- and cis-dihydroflavonols in moderate to high enantiomeric excess and yield.