[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-15-[(2R,3S)-3-(8-bromooctanoylamino)-2-[tert-butyl(dimethyl)silyl]oxy-3-phenylpropanoyl]oxy-1-hydroxy-10,14,17,17-tetramethyl-11-oxo-9,12-bis(triethylsilyloxy)-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] 8-bromooctanoate 在
sodium sulfide 作用下,
以
丙酮 为溶剂,
反应 1.0h,
以40%的产率得到[(2R,4S,5S,7R,10S,11R,12S,32S,33R,36S,38S)-33-[tert-butyl(dimethyl)silyl]oxy-38-hydroxy-4,39,39,40-tetramethyl-3,14,30,34-tetraoxo-32-phenyl-2,5-bis(triethylsilyloxy)-8,13,35-trioxa-22-thia-31-azapentacyclo[34.3.1.04,11.07,10.012,38]tetracont-1(40)-en-10-yl] acetate