Synthesis and evaluation of naphthoflavones as a new class of non purine xanthine oxidase inhibitors
作者:Harbinder Singh、Sahil Sharma、Ritu Ojha、Manish K. Gupta、Kunal Nepali、P.M.S. Bedi
DOI:10.1016/j.bmcl.2014.07.041
日期:2014.9
view of reported xanthineoxidase inhibitory potential of naphthopyrans and flavones, naphthoflavones as hybrids of the two were designed, synthesized and evaluated for in vitro xanthineoxidase inhibitory activity in the present study. The results of the assay revealed that the naphthoflavones possess promising inhibitory potential against the enzyme with IC50 values ranging from 0.62 to 41.2 μM.
Benzoflavone derivatives as potent antihyperuricemic agents
作者:Jatinder V. Singh、Gurbachan Mal、Gurleen Kaur、Manish K. Gupta、Amritpal Singh、Kunal Nepali、Harbinder Singh、Sahil Sharma、Preet Mohinder S. Bedi
DOI:10.1039/c8md00512e
日期:——
Benzoflavone derivatives were rationally designed, synthesized and evaluated against the xanthine oxidase enzyme to check their antihyperuricemic effect by using in vitro as well as in vivo methods.
Benzoflavone activators of the cystic fibrosis transmembrane conductance regulator: towards a pharmacophore model for the nucleotide-binding domain
作者:Mark F Springsteel、Luis J.V Galietta、Tonghui Ma、Kolbot By、Gideon O Berger、Hong Yang、Christopher W Dicus、Wonken Choung、Chao Quan、Anang A Shelat、R.Kiplin Guy、A.S Verkman、Mark J Kurth、Michael H Nantz
DOI:10.1016/s0968-0896(03)00435-8
日期:2003.9
using cell-based assays, of a series of benzoflavone analogues to examine structure-activity relationships and to identify compounds having greater potency for activation of both wild type CFTR and a mutant CFTR (G551D-CFTR) that causes cystic fibrosis in some human subjects. Using UCCF-029 as a structural guide, a panel of 77 flavonoid analogues was prepared. Analysis of the panel in FRT cells indicated
Benzoflavones as cholesterol esterase inhibitors: Synthesis, biological evaluation and docking studies
作者:Harbinder Singh、Jatinder Vir Singh、Manish K. Gupta、Palwinder Singh、Sahil Sharma、Kunal Nepali、Preet Mohinder S. Bedi
DOI:10.1016/j.bmcl.2017.01.020
日期:2017.2
A library of forty 7,8-benzoflavone derivatives was synthesized and evaluated for their inhibitory potential against cholesterol esterase (CEase). Among all the synthesized compounds seven benzoflavone derivatives (A-7, A-8, A-10, A-11, A-12, A-13, A-15) exhibited significant inhibition against CEase in in vitro enzymatic assay. Compound A-12 showed the most promising activity with IC50 value of 0.78 nM against cholesterol esterase. Enzyme kinetic studies carried out for A-12, revealed its mixed-type inhibition approach. Molecular protein ligand docking studies were also performed to figure out the key binding interactions of A-12 with the amino acid residues of the enzyme's active site. The A-12 fits well at the catalytic site and is stabilized by hydrophobic interactions. It completely blocks the catalytic assembly of CEase and prevents it to participate in ester hydrolysis mechanism. The favorable binding conformation of A-12 suggests its prevailing role as CEase inhibitor. (C) 2017 Elsevier Ltd. All rights reserved.
Selective Benzopyranone and Pyrimido[2,1-<i>a</i>]isoquinolin-4-one Inhibitors of DNA-Dependent Protein Kinase: Synthesis, Structure−Activity Studies, and Radiosensitization of a Human Tumor Cell Line in Vitro
作者:Roger J. Griffin、Gabriele Fontana、Bernard T. Golding、Sophie Guiard、Ian R. Hardcastle、Justin J. J. Leahy、Niall Martin、Caroline Richardson、Laurent Rigoreau、Martin Stockley、Graeme C. M. Smith
DOI:10.1021/jm049526a
日期:2005.1.1
scaffolds were less potent. Crucially, these studies revealed a very constrained structure-activityrelationship at the 2-position of the benzopyranone and pyrimido[2,1-a]isoquinolin-4-one pharmacophore, with only a 2-morpholino or 2-(2'-methylmorpholino) group being tolerated at this position. More detailed biological studies conducted with the most potent inhibitor NU7163 (48; IC(50) = 0.19 microM) demonstrated