Synthesis and evaluation of the antioxidant and anti-inflammatory activity of novel coumarin-3-aminoamides and their alpha-lipoic acid adducts
摘要:
In the present work a series of novel coumarin-3-carboxamides and their hybrids with the alpha-lipoic acid were designed, synthesized and tested as potent antioxidant and anti-inflammatory agents. The new compounds were evaluated for their antioxidant activity, their activity to inhibit in vitro lipoxygenase and their in vivo anti-inflammatory activity. In general, the derivatives were generally found to present antioxidant and anti-inflammatory activities. Discussion is made based on the results for the structure-activity relationships in order to define the structural features required for activity. (C) 2009 Elsevier Masson SAS. All rights reserved.
A Rh(<scp>iii</scp>)-catalyzed cascade C–H functionalization/cyclization reaction of salicylaldehydes with diazomalonates for the synthesis of 4-hydroxycoumarin derivatives
作者:Guo-Dong Xu、Zhi-Zhen Huang
DOI:10.1039/c8nj04576c
日期:——
A cascadeC–H functionalization/cyclization reaction of salicylaldehydes with α-diazomalonates has been developed for the synthesis of 4-hydroxycoumarin derivatives under the catalysis of rhodium(III) and in the presence of acetic acid. A plausible mechanism involving aldehydic C(sp2)–H activation by rhodium(III) and rhodium(III) catalyzed carbene insertion is also proposed.