3-O-(t-butyldimethylsilyl)-4-O-mesyl-D-glucal   、                                                                                      
6-O-[6'-O-(benzyl)-4'-O-acetyl-2',3'-dideoxy-β-D-threo-hex-2'-enopyranosyl]-4-O-mesyl-D-glucal                                                                                                                                                              在
                                                                                                                                                                                 
potassium tert-butylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 48.33h,
                                                                                                                以0.047 g的产率得到6-O-[6'-O-[6''-O-(benzyl)-4''-O-acetyl-2'',3''-dideoxy-β-D-threo-hex-2''-enopyranosyl]-2',3'-dideoxy-β-D-threo-hex-2'-enopyranosyl]-4-O-mesyl-3-O-(t-butyldimethylsilyl)-D-glucal