(R)-(-)-丙烯酰-2,10-樟脑磺内酰胺 、
N-benzyl-2,3-O-isopropylidene-D-glyceraldehyde nitrone 以
甲苯 为溶剂,
以56%的产率得到(3S,5S)-{2-benzyl-3-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]isoxazolidin-5-yl}-(10,10-dimethyl-3,3-dioxo-3λ6-thia-4-azatricyclo[5.2.1.01,5]dec-4-yl)-methanone