(4aS,6R,7R,8R,8aS)-8-(tert-butyldiphenylsilyloxy)-3-((tert-butyldiphenylsilyloxy)-methyl)-4a,5,6,7,8,8a-hexahydro-4H-benzo[e][1,2]oxazine-6,7-O-isopropylidene-4a-ol 在
iron(III) chloride hexahydrate 作用下,
以
二氯甲烷 为溶剂,
反应 0.33h,
以85%的产率得到(4aS,6R,7R,8R,8aS)-8-(tert-butyldiphenylsilyloxy)-3-((tert-butyldiphenylsilyloxy)-methyl)-4a,5,6,7,8,8a-hexahydro-4H-benzo[e][1,2]oxazine-4a,6,7-triol