Synthesis of Novel Indole Analogues of Mycophenolic Acid as Potential Antineoplastic Agents
作者:Gaifa Lai、Wayne K Anderson
DOI:10.1016/s0040-4020(00)00177-0
日期:2000.4
The expedient synthesis of three novel indole analogues, 2a–c, of mycophenolic acid is described, which involved as the key steps both the Et2O·BF3 catalyzed amino-Claisen rearrangement of N-allylindoline to 7-allylindoline and the ortho ester Claisen rearrangement of the allylic alcohol 12 to the methyl ester 14. The installation of the substituents at the C-3 position in 2b and 2c was accomplished
描述了三种新颖的霉酚酸吲哚类似物2a – c的简便合成方法,这些步骤涉及Et 2 O·BF 3催化的N -allylindoline氨基-Claisen重排成7-allylindoline的关键步骤,以及原酸酯烯丙基醇12的克莱森重排为甲酯14。取代基在2b和2c中C-3位置的安装是通过Vilsmeier甲酰化以及随后的氧化-氨解或氧化-甲氧基化完成的。所描述的综合方法具有一般用途。模拟2b 显示出显着的,可再现的抗肿瘤活性。