Total Synthesis of Optically Active Lycopladine A by Utilizing Diastereoselective Protection of Carbonyl Group in a 1,3-Cyclohexanedione Derivative
作者:Kou Hiroya、Yoshihiro Suwa、Yusuke Ichihashi、Kiyofumi Inamoto、Takayuki Doi
DOI:10.1021/jo200418y
日期:2011.6.3
first synthesized from the symmetrical diketone 1a via diastereoselective carbon–oxygen bond formation between one of the carbonyl groups and the chiral alcohol on the C2 side chain in a 2,2-disubstituted 1,3-cycloalkanedione derivative. We also report the total synthesis of natural (+)-lycopladine A [(+)-6] from (7R,7aR)-9 and the formal synthesis of unnatural (−)-lycopladine A [(−)-6] from (7S,7aS)-9