2,2-dimethylpropionic acid 6-(2',2'-dimethylpropionyl)-5,6-dihydro-4H-furo[2,3-b]pyrrol-3-yl ester 在
oxonium 作用下,
生成 1-(2,2-dimethylpropionyl)-4-(2,2-dimethylpropionyloxy)-6,8-dioxo-7-phenyl-1,2,3,6,7,8-hexahydro-1,7-diaza-as-indacene-5-carboxylic acid ethyl ester