Acetic acid (11E,13E)-(4R,5S,6S,7R,9R,16R)-6-((2S,3R,4S,5S,6R)-3-acetoxy-4-dimethylamino-5-hydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-7-(2,2-dimethoxy-ethyl)-5-methoxy-9,16-dimethyl-2,10-dioxo-oxacyclohexadeca-11,13-dien-4-yl ester 、
苄磺酰氯 在
吡啶 作用下,
反应 3.0h,
以93%的产率得到Acetic acid (2S,3R,4R,5S,6R)-2-[(11E,13E)-(4R,5S,6S,7R,9R,16R)-4-acetoxy-7-(2,2-dimethoxy-ethyl)-5-methoxy-9,16-dimethyl-2,10-dioxo-oxacyclohexadeca-11,13-dien-6-yloxy]-4-dimethylamino-6-methyl-5-phenylmethanesulfonyloxy-tetrahydro-pyran-3-yl ester