[(2S)-4-[(3R,4S,5R)-3-[tert-butyl(diphenyl)silyl]oxy-5-hydroxy-4-[(4-methoxyphenyl)methoxy]-5-prop-2-ynylcyclopenten-1-yl]-2-[(3R)-1,4-dioxaspiro[4.4]nonan-3-yl]-2-triethylsilyloxybut-3-ynyl] 2,2-dimethylpropanoate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
二氯甲烷 为溶剂,
反应 19.0h,
以43%的产率得到2,2-Dimethyl-propionic acid (S)-4-[(3aR,6R,6aS)-6-(tert-butyl-diphenyl-silanyloxy)-2-(4-methoxy-phenyl)-3a-prop-2-ynyl-6,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl]-2-(R)-1,4-dioxa-spiro[4.4]non-2-yl-2-triethylsilanyloxy-but-3-ynyl ester