(4S,5R)-2,2-di(chloromethyl)-4-phenyl-1,3-oxazolidine-5-carboxylic acid triethylamine salt 、
7-trichloroacetylbaccatin III 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以84%的产率得到[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-2-benzoyloxy-1-hydroxy-10,14,17,17-tetramethyl-11-oxo-9-(2,2,2-trichloroacetyl)oxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-15-yl] (4S,5R)-2,2-bis(chloromethyl)-4-phenyl-1,3-oxazolidine-5-carboxylate