(R)-2,2-Dimethyl-5-((3aR,5S,5aS,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-yl)-[1,3]dioxolane-4-carbaldehyde                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                生成                                                 
1,2:3,4:6,7-tri-O-isopropylidene-α-D-threo-D-galacto-octodialdo-1,5-pyranose