1,1-dimethylethyl <2-<<2-<2-(diethylamino)ethyl>-8-hydroxy-2H<1>benzothiopyrano<4,3,2-cd>indazol-5-yl>amino>-2-oxoethyl>carbamate                                                                                                                                                              在
                                                                                                                                                                                 
红铝                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        以57%的产率得到1,1-dimethylethyl <2-<<2-<2-(diethylamino)ethyl>-8-hydroxy-2H<1>benzothiopyrano<4,3,2-cd>indazol-5-yl>amino>ethyl>-carbamate