作者:Takaaki Matsubara、Keisuke Takahashi、Jun Ishihara、Susumi Hatakeyama
DOI:10.1002/anie.201307835
日期:2014.1.13
features of the synthesis include the highly stereocontrolled construction of the structurally congested γ‐lactone/δ‐lactone skeleton through an asymmetric epoxidation, diastereoselective iodolactonization, and intramolecular epoxide‐opening with a carboxylic acid, and biomimetic radical cyclization of ophiodilactone A to ophiodilactone B.
报道了从蛇形类(Ophiocoma scolopendrina)分离的(-)-邻苯二内酯A和(-)-邻苯二内酯B的第一个不对称总合成。合成的关键特征包括通过不对称环氧化,非对映选择性碘内酯化和羧酸的分子内环氧化物开环以及结构类似的自由基对环糊精的γ-内酯/δ-内酯骨架进行立体控制,以及仿生自由基环化环二内酯A到二内酯内酯。 B.