7,11,13-trimethoxy-5,12-dimethyl-10-triethylsilyloxy-8-(trimethylsilylmethyl)-2,5-diazatetracyclo[7.4.0.02,7.04,6]trideca-1(9),10,12-trien-8-ol 生成 (4R,6R,7R)-7,11-dimethoxy-5,12-dimethyl-8-methylidene-2,5-diazatetracyclo[7.4.0.02,7.04,6]trideca-1(9),11-diene-10,13-dione