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