丙酮O-<(乙烯氧基)羰基>肟 、 methyl neobiosaminide B 在
sodium hydroxide 作用下,
以
phosphate buffer 为溶剂,
反应 5.0h,
以48%的产率得到[(2R,3R,4R,5S,6S)-4,5-Dihydroxy-2-((2R,3S,4R,5R)-4-hydroxy-2-hydroxymethyl-5-methoxy-tetrahydro-furan-3-yloxy)-6-(vinyloxycarbonylamino-methyl)-tetrahydro-pyran-3-yl]-carbamic acid vinyl ester