(1R,2R,3R,4S,5R,5'S)-1-((tert-butyldiphenylsilyloxy)methyl)-2'-(4-methoxyphenyl)-2,5'-dimethyl-5'H-6-oxaspiro[bicyclo[3.1.0]hexane-3,4'-oxazole]-2,4-diol 在
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以92%的产率得到(1R,2R,3R,5S,5'S)-1-((tert-butyldiphenylsilyloxy)methyl)-2-hydroxy-2'-(4-methoxyphenyl)-2,5'-dimethyl-5'H-6-oxaspiro[bicyclo[3.1.0]hexane-3,4'-oxazol]-4-one