(1R,4S,5R,6S)-6-hydroxy-5-methyl-4-pivaloyloxymethyl-3-oxabicyclo[3.2.0]heptan-2-one 、 (1R,4S,5S,6R)-6-hydroxy-5-methyl-4-pivaloyloxymethyl-3-oxabicyclo[3.2.0]heptan-2-one 、
叔丁基二甲基氯硅烷 在
咪唑 作用下,
以
二氯甲烷 为溶剂,
以86%的产率得到(1R,4S,5S,6S)-6-tert-butyldimethylsilyloxy-5-methyl-4-pivaloyloxymethyl-3-oxabicyclo[3.2.0]heptan-2-one