propan-2-yl (3R,4R)-3-(2-methoxypropan-2-yloxy)-2-oxo-4-thiophen-2-ylazetidine-1-carboxylate 、 [(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-12-(cyclopentanecarbonyloxy)-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
反应 3.5h,
以95%的产率得到