Oxidative Deprotection of <i>p</i>-Methoxybenzyl Ethers via Metal-Free Photoredox Catalysis
作者:Deok Kyun Ahn、Young Woo Kang、Sang Kook Woo
DOI:10.1021/acs.joc.8b02951
日期:2019.3.15
method for p-methoxybenzyl (PMB) ethers using a metal-free visible light photoredox catalyst and air and ammonium persulfate as the terminaloxidants is presented. Various functional groups and protectinggroups were tolerated in the developed method to achieve good to excellent yields in short reaction times. Significantly, the developed method was compatible with PMB ethers derived from primary, secondary
Novel purine derivatives of formula
as agents for treating autoimmune diseases are described. Also disclosed are processes for their production and pharmaceutical compositions comprising the compounds.