Copper-Catalyzed Intramolecular Alkoxylation of Purine Nucleosides: One-Step Synthesis of 5′-<i>O</i>,8-Cyclopurine Nucleosides
作者:Mingwu Yu、Zhiqian Wang、Junbin Hu、Shunlai Li、Hongguang Du
DOI:10.1021/acs.joc.5b01360
日期:2015.10.2
A novel copper-catalyzed intramolecular dehydrogenative alkoxylation of purine nucleosides has been developed successfully, providing the 5′-O,8-cyclopurine nucleosides in one-step with a yield up to 90%. The method, which utilized an inexpensive CuCl catalyst and a di-tert-butyl peroxide (DTBP) oxidant was suitable in a broad substrate scope and proceeded well even in gram scale.