3-丁烯酸甲酯 、
(3α,4β,5α,6β)-3,4,5,6-tetrahydro-5-hydroxy-3,4-bis<(1,1-dimethylethyl)dimethylsilyloxy>-6-<<(1,1-dimethylethyl)dimethyl>methyl>pyridine 1-oxide 在
radical scavenger 作用下,
以
氯仿 为溶剂,
以23%的产率得到[(2S,3aS,4S,5S,6R,7R)-4,5-Bis-(tert-butyl-dimethyl-silanyloxy)-6-hydroxy-7-hydroxymethyl-hexahydro-isoxazolo[2,3-a]pyridin-2-yl]-acetic acid methyl ester