[(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] 5-bromopentanoate 在
sodium sulfide 作用下,
以
丙酮 为溶剂,
反应 1.0h,
以58%的产率得到[(2R,4S,5S,7R,10S,11R,12S,29S,30R,33S,35S)-30-[tert-butyl(dimethyl)silyl]oxy-35-hydroxy-4,36,36,37-tetramethyl-3,14,27,31-tetraoxo-29-phenyl-2,5-bis(triethylsilyloxy)-8,13,32-trioxa-19-thia-28-azapentacyclo[31.3.1.04,11.07,10.012,35]heptatriacont-1(37)-en-10-yl] acetate