An efficient one-potsynthesis of coumarins mediated by T3P, a mild and low toxic peptide coupling agent, via the Perkin condensation has been demonstrated.
已经证明了通过珀金(Perkin)缩合反应,由温和低毒的肽偶联剂T3P介导的一锅香豆素的有效合成。
Copper-catalyzed decarboxylative intramolecular C–O coupling: synthesis of 2-arylbenzofuran from 3-arylcoumarin
作者:Wen-Chen Pu、Guan-Min Mu、Guo-Lin Zhang、Chun Wang
DOI:10.1039/c3ra46414h
日期:——
A copper-catalyzed decarboxylative intramolecular CâO coupling reaction was established. Under aerobic conditions in the presence of cupric chloride/1,10-phenathroline, a variety of 2-arylbenzofurans were prepared from 3-arylcoumarins in one-pot with yields from 26% to 84%.
Chronic inflammation is the persistent and excessive immune response and can lead to a variety of diseases. Aiming to discover new compounds with anti-inflammatory activity, we report herein the synthesis and biological evaluation of 3-arylcoumarins. Thirty five 3-arylcoumarins were prepared through Perkin condensation and further acid-promoted hydrolysis if necessary. In lipopolysaccharide-activated mouse macrophage RAW264.7 cells, 6,8-dichloro-3-(2-methoxyphenyl) coumarin (16) and 6-bromo-8-methoxy-3-(3-methoxyphenyl) coumarin (25) exhibited nitric oxide production inhibitory activity with the IC50 values of 8.5 mu M and 6.9 mu M, respectively, providing a pharmacological potential as anti-inflammatory agents. (C) 2014 Elsevier Ltd. All rights reserved.
2-Phenylbenzo[ b ]furans: Synthesis and promoting activity on estrogen biosynthesis
2-phenylbenzo[b]furan glycosides could promote estrogen biosynthesis. To find high active 2-phenylbenzo[b]furans, fifty-four 2-phenylbenzo[b]furans were prepared via four strategies according to corresponding substrate scopes. Biological evaluation in HEK293A cells showed that some compounds exhibited promotive activity on estrogen biosynthesis. 2-(4-Chlorophenyl)-7-methoxybenzo[b]furan possessed the
A series of coumarin-resveratrol hybrids, 3-arylcoumarin derivatives 3a-u, were synthesized through the intermolecular condensation reaction of various salicylaldehydes and phenylacetic acids in the presence of 1,4-diazabicyclo[2.2.2]octane under solvent-free conditions. All the synthesized compounds were screened for their inhibitory potency against soybean 15-lipoxygenase. Among them, three compounds (3c, 3j, and 3q) showed good enzyme-inhibitory activities.