Oxidative Furan-to-Indole Rearrangement. Synthesis of 2-(2-Acylvinyl)indoles and Flinderole C Analogues
作者:Anton S. Makarov、Anton A. Merkushev、Maxim G. Uchuskin、Igor V. Trushkov
DOI:10.1021/acs.orglett.6b00805
日期:2016.5.6
Oxidative rearrangement of 2-(2-aminobenzyl)furans affording 2-(2-acylvinyl)indoles in a stereocontrolled manner in good-to-excellent yields has been developed. Thus, (2-aminobenzyl)furans with electron-releasing alkoxy substituents in the phenyl group form only E-isomers of 2-(2-acylvinyl)indoles. Conversely, substrates without such substituents produce target products as Z-isomers exclusively. A
已经开发出以立体控制的方式以良好至优异的产率提供2-(2-酰基乙烯基)吲哚的2-(2-氨基苄基)呋喃的氧化重排。因此,在苯基中具有释放电子的烷氧基取代基的(2-氨基苄基)呋喃仅形成2-(2-酰基乙烯基)吲哚的E-异构体。相反,没有这种取代基的底物仅产生目标产物,如Z-异构体。已开发出一种短的非对映选择性方法,用于将获得的2-(2-酰基乙烯基)吲哚转化为抗疟疾的双吲哚生物碱氟代烯AC类似物。