(2R,3R,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3R,4S,5R,6R)-2-[(2R,3R,4R,5S,6S)-2-[(4-methoxyphenyl)methoxy]-6-methyl-3,5-bis(phenylmethoxy)oxan-4-yl]oxy-3,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-4-yl]oxy-5-prop-2-enoxyoxane-3,4-diol   、                                                                                      
溴甲苯                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以95%的产率得到(2R,3R,4S,5R,6R)-4-[(2R,3R,4S,5S,6R)-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)-3-prop-2-enoxyoxan-2-yl]oxy-2-[(2R,3R,4R,5S,6S)-2-[(4-methoxyphenyl)methoxy]-6-methyl-3,5-bis(phenylmethoxy)oxan-4-yl]oxy-3,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxane