地不容碱                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
(2R,4aS,11bS)-3,4-dimethoxy-14-methyl-1,2,5,6-tetrahydro-4a,11b-(epiminoethano)phenanthro[2,3-d][1,3]dioxol-2-ol   、                                                                                             (2R,4aS,11bS)-3,4-dimethoxy-14-methyl-1,2,5,6-tetrahydro-4a,11b-(epiminoethano)phenanthro[2,3-d][1,3]dioxol-2-ol