methyl 4-(1'-t-butyldimethylsilyloxy-4'-hydroxy-5'-methoxy-3'-(6'',6''-dimethyl-5''-oxoheptanoyl)naphth-2'-yl)-2-butenoate 在
potassium hydride 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以54%的产率得到methyl (6a-SR,9-SR,10-SR,10a-RS)-9-t-butyldimethylsilyloxy-5,9-dihydroxy-4-methoxy-6-oxo-6,6a,7,8,9,10,10a,11-octahydronaphthacene-10-carboxylate