2,3-di-O-benzyl-1,4’’,4’”-trideoxy-1-C-methylene-5,6-O-isopropylidene-1’-tri-Oisopropylsilyl-4-C-(prop-4’-enyl)-D-galacto-heptitol 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
甲苯 为溶剂,
反应 6.0h,
以1.1 g的产率得到(2S,3R,4S,5R)-2,3-bis(benzyloxy)-4-hydroxycyclohex-1-ene-ethane-5,6-diol-O-isopropylidene-1-(triisopropylsilyloxymethyl)