(1S,4aS,7aR)-1-((2S,3R,4S,5R,6R)-3,4,5-Triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-1,4a,5,6,7,7a-hexahydro-cyclopenta[c]pyran-4-carboxylic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以95%的产率得到methyl(1S, 4aS, 7aR)-(-)-1-(β-D-glucopyranosiloxy)-1,4a,5,6,7,7a-hexahydroxyclopenta
pyran-4-carboxylate