叔丁基二甲硅基三氟甲磺酸酯 、
(1S,2S,3R,5S)-2-Benzyloxymethyl-3-hydroxy-8-oxa-bicyclo[3.2.1]oct-6-ene-2-carboxylic acid methyl ester 在
lutidine 作用下,
以
二氯甲烷 为溶剂,
以94%的产率得到(1S,2R,3R,5S)-2-Benzyloxymethyl-3-(tert-butyl-dimethyl-silanyloxy)-8-oxa-bicyclo[3.2.1]oct-6-ene-2-carboxylic acid methyl ester