1-[(2R,3R,4S,5R,6S,10R,11R)-3,4,5-tris(benzyloxy)-2-(benzyloxymethyl)-10,11-dihydroxy-1-oxa-8-azaspiro[5.5]undecan-8-yl]ethanone 、
乙酸酐 在
三乙胺 作用下,
以88.2 mg的产率得到(2R,3R,4S,5R,6R,10R,11R)-8-acetyl-3,4,5-tris(benzyloxy)-2-(benzyloxymethyl)-1-oxa-8-azaspiro[5.5]undecane-10,11-diyl diacetate