[(2S,3S,6R)-4-methoxy-16,18-dioxa-10-azapentacyclo[11.7.0.02,6.06,10.015,19]icosa-1(20),4,13,15(19)-tetraen-3-yl] 6-[tert-butyl(dimethyl)silyl]oxy-6-methyl-2-oxoheptanoate 、
三甲基硅烷基乙烯酮 在
三甲基硅烷基乙烯酮 作用下,
以87的产率得到[(2S,3S,6R)-4-methoxy-16,18-dioxa-10-azapentacyclo[11.7.0.02,6.06,10.015,19]icosa-1(20),4,13,15(19)-tetraen-3-yl] (2R)-2-[4-[tert-butyl(dimethyl)silyl]oxy-4-methylpentyl]-4-oxooxetane-2-carboxylate