4,10-bis(deacetyl)-7-(triethylsily)baccatin III 在
吡啶 、
pyridinium chlorochromate 作用下,
以72%的产率得到[(1S,2S,3R,4S,7R,9S,10S,12R)-1,4,12-trihydroxy-10,14,17,17-tetramethyl-11,15-dioxo-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate