新霉胺 、
丙酮O-<(乙烯氧基)羰基>肟 在
sodium hydroxide 作用下,
以
phosphate buffer 为溶剂,
反应 5.0h,
以66%的产率得到{(1R,2S,3R,4R,5S)-4-[(2R,3R,4R,5S,6R)-4,5-Dihydroxy-3-vinyloxycarbonylamino-6-(vinyloxycarbonylamino-methyl)-tetrahydro-pyran-2-yloxy]-2,3-dihydroxy-5-vinyloxycarbonylamino-cyclohexyl}-carbamic acid vinyl ester