A Catalytic Asymmetric Protecting-Group-Free Total Synthesis of (4<i>S</i>,5<i>S</i>)-4,8-Dihydroxy-3,4-dihydrovernoniyne and Its Enantiomer
作者:Gujjula V. Ramakrishna、Rodney A. Fernandes
DOI:10.1021/acs.joc.9b02461
日期:2019.11.1
A catalytic asymmetric second generation synthesis of (4S,5S)-4,8-dihydroxy-3,4-dihydrovernoniyne has been completed employing the asymmetric dihydroxylation strategy. Further, a four-step protecting-group-freesynthesis of the natural product and its enantiomer has been achieved through the modified Knoevenagel reaction, asymmetric dihydroxylation, and Cadiot-Chodkiewicz coupling. The protecting-group-free