5-氟靛红 、
穿心莲内酯 、
L-脯氨酸 以
甲醇 为溶剂,
反应 0.25h,
以88%的产率得到(3R,3'R,4S)-5''-fluoro-4-hydroxy-2'-(((1R,4aS,5R,6R,8aS)-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylenedecahydronaphthalen-1-yl)methyl)-4,5,5',6',7',7a'-hexahydro-2H,2'H-dispiro[furan-3,1'-pyrrolizine-3',3''-indoline]-2,2''-dione