4-ethyl-3-methyl-10,11-dihydro-pyrido[4,3-b]benzo[f][1,4]thiazepin-1-yl-methylsulfonate                                                                                                                                                              在
                                                                                                                                                                                 
manganese(IV) oxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 168000.0h,
                                                                                                                以30%的产率得到Methanesulfonic acid 4-ethyl-3-methyl-10-oxo-10,11-dihydro-5-thia-2,11-diaza-dibenzo[a,d]cyclohepten-1-yl ester