Total Synthesis and Stereochemical Revision of 4,8-Dihydroxy-3,4-dihydrovernoniyne
作者:Suresh Kanikarapu、Kanakaraju Marumudi、Ajit C. Kunwar、Jhillu S. Yadav、Debendra K. Mohapatra
DOI:10.1021/acs.orglett.7b01620
日期:2017.8.18
The first asymmetric totalsynthesis of two possible diastereomers (4S,5R)-4,8-dihydroxy-3,4-dihydrovernoniyne 5 and (4S,5S)-4,8-dihydroxy-3,4-dihydrovernoniyne 5a is accomplished. Salient features of the synthesis involve Cadiot–Chodkiewicz coupling and Sonogashira cross-coupling of terminal acetylenes. Detailed comparison of the 1H and 13C NMR data and specific rotation with that of the natural product