Curcumin analogues and methods are provided for treatment of disease.
提供类似姜黄素的化合物和方法,用于治疗疾病。
US8841326B2
申请人:——
公开号:US8841326B2
公开(公告)日:2014-09-23
Cu(OAc)<sub>2</sub>-catalyzed remote benzylic C(sp<sup>3</sup>)–H oxyfunctionalization for CO formation directed by the hindered para-hydroxyl group with ambient air as the terminal oxidant under ligand- and additive-free conditions
作者:Jian-An Jiang、Cheng Chen、Jian-Gang Huang、Hong-Wei Liu、Song Cao、Ya-Fei Ji
DOI:10.1039/c3gc41946k
日期:——
A hindered para-hydroxyl group-directed remotebenzylicC(sp3)–H oxyfunctionalization has been developed for the straightforward transformation of 2,6-disubstituted 4-cresols, 4-alkylphenols, 4-hydroxybenzyl alcohols and 4-hydroxybenzyl alkyl ethers into various aromatic carbonyl compounds. The ligand- and additive-free Cu(OAc)2-catalyzed atmospheric oxidation mediated by ethylene glycol unlocks a
Abstract An improved procedure for the preparation of isofraxidin 1 a well known natural coumarin, through transformation of syringaldehyde is reported. The cyclization of 7 to the coumarinic carboxylic acid 8 is readily performed by cold concentrated sulfuric acid. The overall yield to 1 by this convenient route is near 50%.