An asymmetric total synthesis of (+)-coronafacic acid, starting from (R)-(+)-4-acetoxy-2-cyclopen-1-one as a chiral source, was accomplished. Construction of the 1-hydrindanone framework was carried out by using intramolecular 1, 6-conjugate addition as the key step. Coupling between (+)-coronafacic acid and protected coronamic acid, and subsequent deprotection provided (+)- coronatine. This is the first asymmetric total synthesis of (+)- coronatine.
以(R)-(+)-4-乙酰氧基-2-环烯-1-酮为手性源,完成了 (+)-coronafacic acid 的不对称全合成。通过分子内 1,6-共轭加成作为关键步骤,构建了 1-hydrindanone 框架。(+)-coronafacic acid 与受保护的冠
氨酸之间的偶联以及随后的脱保护反应提供了 (+)- coronatine。这是首次不对称全合成 (+)- 冠那汀。