Soft-enolization Baker–Venkataraman Rearrangement Enabled Total Synthesis of Dirchromones and Related 2-Substituted Chromones
作者:Alexis St-Gelais、Jérôme Alsarraf、Jean Legault、Charles Gauthier、André Pichette
DOI:10.1021/acs.orglett.8b03148
日期:2018.12.7
seven-step total synthesis of the original scaffold of cytotoxic dirchromones involving an unprecedented soft-enolization Baker–Venkataraman rearrangement was designed. The methodology enabled access to naturally occurring dirchromone 1 (21% overall yield) at gram-scale, which was screened for cytotoxicity against 13 cancer cell lines. The scope of the soft-enolization Baker–Venkataraman rearrangement encompasses
设计了七步全合成的原始细胞毒性二氢苯并二氢吡喃酮,涉及前所未有的软化贝克-Venkataraman重排。该方法能够以克为单位获取天然存在的敌色酮1(总收率21%),并筛选了对13种癌细胞系的细胞毒性。软化贝克-Venkataraman重排的范围包括不同取代的二氢色酮,包括类黄酮,2-苯乙烯基色酮和2-苯基乙基色酮。