9H-fluoren-9-ylmethyl (3S,4R,6R,11R,11aS)-7-acetyloxy-11-[tert-butyl(dimethyl)silyl]oxy-4-cyano-1-hydroxy-8,10-dimethoxy-9-methyl-6-(phenylmethoxymethyl)-3-[(E)-4-trimethylsilylbut-2-enyl]-1,3,4,6,11,11a-hexahydropyrazino[1,2-b]isoquinoline-2-carboxylate 在
三氟乙酸 作用下,
以
四氢呋喃 为溶剂,
反应 0.25h,
以58%的产率得到9H-fluoren-9-ylmethyl (1R,2R,3R,10R,12S,13S,15S)-8-acetyloxy-12-cyano-15-ethenyl-3-hydroxy-5,7-dimethoxy-6-methyl-10-(phenylmethoxymethyl)-11,16-diazatetracyclo[11.2.1.02,11.04,9]hexadeca-4(9),5,7-triene-16-carboxylate