(±)-Methyl (2Z,6R*,8R*,9E)-3,6-epoxy-4,6,8-triethyl-2,4,9-dodecatrienoate, a major metabolite of the Caribbean sponge, was synthesized in a stereocontrolled manner from γ-caprolactone. The key step was one-pot generation of alkylidenecarbenes at two sites followed by 1,2 hydride shift and intramolecular 1,5 C–H insertion.
(±)-甲基(2 Z,6 R *,8 R *,9 E)-3,6-环氧-4,6,8-三乙基-2,4,9-十二碳
三烯酸酯,是加勒比海绵的主要代谢产物由
γ-己内酯以立体控制方式合成。关键步骤是一锅法在两个位点生成亚烷基碳烯,然后进行1,2
氢化物转移和分子内1,5 C–H插入。