(2R,3S,4S,5R,6R,8R)-9-[[(2R,3R,4R,5R)-3-[tert-butyl(dimethyl)silyl]oxy-4,5-dihydroxy-4-methylheptan-2-yl]-methylamino]-5-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-3,6-dihydroxy-2,4,6,8-tetramethylnonanoic acid 在
4-二甲氨基吡啶 、
2,4,6-三氯苯甲酰氯 、
三乙胺 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以90%的产率得到(2R,3R,4R,5R,8R,10R,11R,12S,13S,14R)-4-((tert-butyldimethylsilyl)oxy)-11-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2-ethyl-3,10,13-trihydroxy-3,5,6,8,10,12,14-heptamethyl-1-oxa-6-azacyclopentadecan-15-one