phenyl carbamic acid (2S,3S,4R,5S,6R,7R,10S,12S,13S,14R,15S,16S)-3,5,10,13,15,17-hexakis(tert-butyldimethylsilyloxy)-7-methoxy-2,4,6,12,14,16-hexamethyl-9-oxo-heptadecyl ester 在
氟化氢吡啶 作用下,
以
四氢呋喃 为溶剂,
以81%的产率得到phenyl carbamic acid (2S,3R,4S)-4-[(2R,3S,4R,6R,7S,9S)-10-((1R,2R,3S)-2,4-dihydroxy-1,3-dimethylbutyl)-7-hydroxy-4-methoxy-3,9-dimethylspiro[5.5]undec-2-yl]-3-hydroxy-2-methy-pentyl ester