4-戊烯酰氯 、 1-dimethylsilyl-4-deacetyl-7-O,10-O,13-O-tris-triethylsilylbaccatin III 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 3.75h,
以78%的产率得到(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-11-((dimethylsilyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-12b-(pent-4-enoyloxy)-4,6,9-tris((triethylsilyl)oxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate