cis-6-hydroxycyclododecyl acetate 、 4-(dimethylamino)-2-fluoro-6-methyltetrahydro-2H-pyran-3-yl acetate 、
trifluoroborane diethyl ether 在
SiO2 作用下,
以
乙酸乙酯 为溶剂,
以to obtain 6-((2S,3R,4S,6R)-3-acetoxy-4-(dimethylamino)-6-methyltetrahydro-2H-pyran-2-yloxy)cyclododecyl acetate (8 mg, 0.018 mmol, 62%) after column chromatography (SiO2, ethyl acetate) as a white solid的产率得到cis-6-((2S,3R,4S,6R)-3-acetoxy-4-(dimethylamino)-6-methyltetrahydro-2H-pyran-2-yloxy)cyclododecyl acetate