Phenyl 3-(dimethylamino)-2-methyl-6-[(2-methylpropan-2-yl)oxycarbonyloxy]benzoate 、
(4aS,8S,8aS,9S)-3-(benzyloxy)-4a-((tert-butyldimethylsilyl)oxy)-8-((diallylamino)methyl)-9-(dimethylamino)-8a,9-dihydronaphtho[2,3-d]isoxazole-4,5(4aH,8H)-dione 在
四甲基乙二胺 、
lithium diisopropyl amide 、
水 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
反应 2.17h,
以70%的产率得到(4aS,11aS,12S,12aS,13S)-3-(benzyloxy)-4a-((tert-butyldimethylsilyl)oxy)-12-((diallylamino)methyl)-10,13-bis(dimethylamino)-5-hydroxy-4,6-dioxo-4,4a,6,11,11a,12,12a,13-octahydrotetraceno[2,3-d]isoxazol-7-yl tert-butyl carbonate