(4R,5S,6S)-9-{(2R,3S)-3-[(E)-(S)-2-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-4-(2-methyl-thiazol-4-yl)-but-3-enyl]-2-fluoromethyl-oxiranyl}-2-((S)-2,2-dimethyl-[1,3]dioxan-4-yl)-5-hydroxy-2,4,6-trimethyl-nonan-3-one 在
4-甲基苯磺酸吡啶 作用下,
以
乙醇 为溶剂,
以70%的产率得到(3S,6R,7S,8S)-11-{(2R,3S)-3-[(E)-(S)-2-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-4-(2-methyl-thiazol-4-yl)-but-3-enyl]-2-fluoromethyl-oxiranyl}-1,3,7-trihydroxy-4,4,6,8-tetramethyl-undecan-5-one