4-甲氧基苯甲醛   、                                                                                      
胶霉素                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  
三氟化硼乙醚                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 7c-hydroxy-4-hydroxymethyl-2ξ-(4-methoxy-phenyl)-13-methyl-(6ac)-7,11-dihydro-6aH-4r,11ac-azaethano-[1,3,5]dithiazepino[5,4-a]indole-5,12-dione   、                                                                                             
7c-hydroxy-4-hydroxymethyl-2ξ-(4-methoxy-phenyl)-13-methyl-(6ac)-7,11-dihydro-6aH-4r,11ac-azaethano-[1,3,5]dithiazepino[5,4-a]indole-5,12-dione