Preparation of the 1-methoxycarbonyl-3-phenylthio-2-quinolinone (10) from dihydro-2-quinolinone (5) and its Diels-Alder reaction with 2-trimethylsilyloxy-1, 3-butadiene under Lewis acid catalyst is described. Conversion of the D-A adduct (11) to 9-phenenthridinone ketal (16) will open a new synthetic route to a dynemicin A core structure.
介绍了从二氢-2-
喹啉酮(5)制备 1-甲氧基羰基-3-苯
硫基-2-
喹啉酮(10),并在
路易斯酸催化剂作用下与 2-三甲基
硅氧基-
1,3-丁二烯发生 Diels-Alder 反应的过程。将 D-A 加合物 (11) 转化为 9-苯
茚酮
缩酮 (16) 将为达尼米星 A 核心结构开辟一条新的合成途径。