6-ethyl-5,8-dihydroxy-2,3,7-tris(tetra-O-acetyl-β-D-glucopyranosylsulfanyl)-1,4-dihydronaphthalene-1,4-dione                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 0.33h,
                                                                                                                以61%的产率得到6-ethyl-2,3,7-tris(β-D-glucopyranosylsulfanyl)-5,8-dihydroxy-1,4-dihydronaphthalene-1,4-dione