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)