(3aS,4R,5R,6R,7aS)-4,5-bis(benzyloxy)-6-(1-hydroxyethyl)-hexahydrobenzo[d]oxazol-2(3H)-one 、
乙酸酐 在
吡啶 作用下,
生成
1-(S)-((3aS,4R,5R,6R,7aS)-4,5-bis(benzyloxy)-2-oxo-octahydrobenzo[d]oxazol-6-yl)ethyl acetate 、
1-(R)-((3aS,4R,5R,6R,7aS)-4,5-bis(benzyloxy)-2-oxo-octahydrobenzo[d]oxazol-6-yl)ethyl acetate