9,22-Dioxo-7,8,9,10,11,12,20,21,22,23,24,25-dodecahydro-6H,19H-5,13,18,26-tetraoxa-dibenzo[a,l]cyclodocosene-8,21-dicarboxylic acid diethyl ester 在
盐酸 作用下,
以
乙醇 为溶剂,
反应 56.0h,
生成
7,8,11,12,20,21,24,25-Octahydro-6H,10H,19H,23H-5,13,18,26-tetraoxa-dibenzo[a,l]cyclodocosene-9,22-dione