Methyl-carbamic acid (3R,4S,5R,6R)-3-(tert-butyl-diphenyl-silanyloxy)-6-methoxy-2,2-dimethyl-5-methylcarbamoyloxy-tetrahydro-pyran-4-yl ester 在
吡啶 、
四丁基氟化铵 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
生成
[(3R,4S,5R,6R)-6-methoxy-2,2-dimethyl-4,5-bis(methylcarbamoyloxy)oxan-3-yl] trifluoromethanesulfonate