2-benzyloxymethyl-3,5,6-trimethyl-1,4-benzoquinone                                                                                                                                                              在
                                                                                                                                                                                 
lithium methanolate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 36.0h,
                                                                                                                生成                                                 (4aR,9aR)-4a,8-Bis-benzyloxymethyl-7-hydroxy-2,3,5,6,9a-pentamethyl-9,9a-dihydro-4aH-xanthene-1,4-dione   、                                                                                             (4aR,9aR)-8,9a-Bis-benzyloxymethyl-7-hydroxy-2,3,4a,5,6-pentamethyl-9,9a-dihydro-4aH-xanthene-1,4-dione