[(2S,3S,4S,5R,6R,8S,10R,11S,12S)-2-(6-ethyl-3,5-dimethyl-4-oxopyran-2-yl)-3-[(4-methoxyphenyl)methoxy]-4,6,8,10,12-pentamethyl-7,9-dioxo-11-triethylsilyloxytetradecan-5-yl] 3-methylbutanoate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以66%的产率得到(2R,3R,4R,5S,6S)-2-((2R,4R,5S,6R)-4,6-dimethyl-3-oxo-5-(triethylsilyloxy)octan-2-yl)-6-((S)-1-(6-ethyl-3,5-dimethyl-4-oxo-4H-pyran-2-yl)ethyl)-2-hydroxy-3,5-dimethyltetrahydro-2H-pyran-4-yl 3-methylbutanoate