吡啶-3-乙酸盐酸盐 、 5-(3,4,6-trideoxy-2-O-acetyl-3-dimethylamino-β-D-xylo-hexopyranosyloxy)-3,6,11,12-tetrahydroxy-9-(2-methoxyethoxy)methoxyimino-2,4,6,8,10,12-hexamethylpentadecan-13-olide 在
三甲基乙酰氯 、
三乙胺 、
4-二甲氨基吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 5.33h,
以99%的产率得到[(3R,4S,5S,6R,7R,9R,10E,11S,12R,13S,14R)-6-[(2S,3R,4S,6R)-3-acetyloxy-4-(dimethylamino)-6-methyloxan-2-yl]oxy-14-ethyl-7,12,13-trihydroxy-10-(2-methoxyethoxymethoxyimino)-3,5,7,9,11,13-hexamethyl-2-oxo-oxacyclotetradec-4-yl] 2-pyridin-3-ylacetate