2,2-Dimethyl-propionic acid (1S,2R,4S,6R)-2-{(1R,2R)-2-bromomethyl-1-[2-(2,2-dimethyl-propionyloxy)-propyl]-3-methyl-butyl}-6-((S)-2-bromo-1-methyl-ethyl)-4-(tert-butyl-diphenyl-silanyloxy)-cyclohexylmethyl ester 在
sodium sulfide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 11.0h,
以72%的产率得到2,2-Dimethyl-propionic acid (1R,2S,6R,7R,8R,10S,12S)-10-(tert-butyl-diphenyl-silanyloxy)-7-[2-(2,2-dimethyl-propionyloxy)-propyl]-6-isopropyl-2-methyl-4,4-dioxo-4λ
6-thia-bicyclo[6.3.1]dodec-12-ylmethyl ester