6-(Benzyl-methyl-amino)-2-benzyloxy-5-oxo-5,6,7,8-tetrahydro-naphthalene-1-carbonitrile                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (5S,6R)-6-(Benzyl-methyl-amino)-2-benzyloxy-5-hydroxy-5,6,7,8-tetrahydro-naphthalene-1-carbonitrile   、                                                                                             (5S,6S)-6-(Benzyl-methyl-amino)-2-benzyloxy-5-hydroxy-5,6,7,8-tetrahydro-naphthalene-1-carbonitrile