戊二酸酐 、
10-去乙酰基-N-去苯甲酰基紫杉醇 在
吡啶 作用下,
反应 0.5h,
以80%的产率得到5-[[(1S,2R)-3-[[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-2-benzoyloxy-1,9,12-trihydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-15-yl]oxy]-2-hydroxy-3-oxo-1-phenylpropyl]amino]-5-oxopentanoic acid