Design, synthesis and evaluation of 2,4-diarylpyrano[3,2-c]chromen-5(4H)-one as a new class of non-purine xanthine oxidase inhibitors
作者:Harpreet S. Virdi、Sahil Sharma、Samir Mehndiratta、P. M. S. Bedi、Kunal Nepali
DOI:10.3109/14756366.2014.961446
日期:2015.9.3
catalyst among the tested ones. The conjugates were evaluated for in-vitro xanthineoxidase activity. The results of the in-vitro assay were quite promising as some conjugates were endowed with remarkable inhibitory potential against the enzyme. HV-8, 11 and 12 were found to be high-potent inhibitors with HV-11 (the most potent inhibitor) possessing an IC50 value of 2.21 µM. The most active conjugate HV-11
efficient and selective approach for the synthesis of functionalized pyranocoumarins has been developed via a gold(III)-catalyzed tandem conjugate addition/annulation reaction of 4-hydroxycoumarins with α,β-unsaturatedketones.
Brønsted acidic ionic liquid-catalyzed tandem reaction: an efficient approach towards regioselective synthesis of pyrano[3,2-c]coumarins under solvent-free conditions bearing lower E-factors
作者:Sachinta Mahato、Sougata Santra、Rana Chatterjee、Grigory V. Zyryanov、Alakananda Hajra、Adinath Majee
DOI:10.1039/c7gc01158j
日期:——
and represents a green synthetic protocol. The catalytic reaction proceeded very smoothly under solvent-free conditions and showed high regioselectivity. Clean reaction, non-chromatographic purification technique, easily accessible reactants, metal and solvent-free and environmentally friendly reaction conditions are the notable advantages of this procedure. In addition, this method possesses lower E-Factors
Efficient synthesis of pyrano[3,2-c]coumarins has been achieved via copper(II) triflate catalyzed tandem reaction of 4-hydroxycoumarin with α,β-unsaturated carbonyl compounds in high yields. The catalytic reaction proceeded very smoothly under solvent-free conditions and showed high regioselectivity. The synthetic potential of this methodology was explored to 4-hydroxy-6-methyl-2-pyrone successfully
吡喃并[3,2- c ]香豆素的有效合成已通过三氟甲磺酸铜(II)催化4-羟基香豆素与α,β-不饱和羰基化合物的串联反应以高收率实现。在无溶剂条件下,催化反应进行得非常顺利,并具有很高的区域选择性。该方法的合成潜力已成功地探索为4-羟基-6-甲基-2-吡喃酮。
Soluble Glass, an Efficient Promoter for the Cascade Addition-Cyclization Reaction of 4-Hydroxycoumarins to Chalcone Derivatives
(2021). Soluble Glass, an Efficient Promoter for the Cascade Addition-Cyclization Reaction of 4-Hydroxycoumarins to Chalcone Derivatives. Organic Preparations and Procedures International: Vol. 53, No. 1, pp. 52-58.