Developing a highly potent anthelmintic: study of catalytic application of l-proline derived aminothiourea in rapid synthesis of biscoumarins and their in vitro anthelmintic essay
作者:Balamphrang Kharrngi、Errini Decruse Dhar、Grace Basumatary、Dharitri Das、Ramesh Ch Deka、Arun K Yadav、Ghanashyam Bez
DOI:10.1007/s12039-020-01881-3
日期:2021.3
compounds 2a, 2j, 2k and 2o demonstrated much stronger anthelmintic activity against Raillietina echinobothrida in comparison to the standard drug, Praziquantel. Molecular docking simulations of the optimized compounds with β-tubulin showed excellent binding interactions with several amino acid residues of the active site and the docking scores with β-tubulin were found to be comparable to the in vitro
Biscoumarin analogs were synthesized by the reaction between two equivalent of 4‐hydroxycoumarin and one equivalent of aryl aldehydes induced by visible light [22 W compact fluorescent lamp (CFL) bulb]. This new method is simple, cost‐effective, and furnished excellent yields with broad substrate generality in short reaction time.
Synthesis and Biological Evaluation of Coumarin-Based Inhibitors of NAD(P)H: Quinone Oxidoreductase-1 (NQO1)
作者:Karen A. Nolan、Jeremy R. Doncaster、Mark S. Dunstan、Katherine A. Scott、A. David Frenkel、David Siegel、David Ross、John Barnes、Colin Levy、David Leys、Roger C. Whitehead、Ian J. Stratford、Richard A. Bryce
DOI:10.1021/jm9011609
日期:2009.11.26
inhibit NQO1 and computed binding affinity. We have solved the crystal structure of NQO1 complexed to a hybrid compound and find good agreement with the in silico model. For both MIA PaCa-2 pancreatic tumor cells and HCT116 colon cancer cells, dicoumarol shows the greatest toxicity of all compounds. Thus, we provide a computational, synthetic, and biological platform to generate competitive NQO1 inhibitors
作者:He Zhao、Nouri Neamati、Huixiao Hong、Abhijit Mazumder、Shaomeng Wang、Sanjay Sunder、George W. A. Milne、Yves Pommier、Terrence R. Burke
DOI:10.1021/jm960450v
日期:1997.1.1
to simplify its structure while maintaining potency. In the present study, dissection of tetrameric 5 (IC50 = 1.5 microM) into its constituent parts showed that the minimum active pharmacophore consisted of a coumarin dimer containing an aryl substituent on the central linker methylene. However, in the simplest case in which the central linker aryl unit consisted of a phenyl ring (compound 8, IC50 =
pharmacological study of the in vivo anticoagulant effect of the derivatives with respect to warfarin showed that the synthesized compounds have different anticoagulantactivities. The most prospective compounds are 3‐(3′‐hydroxybenzylidene)‐2,4‐diketochroman 4 and 3,3′‐(2‐pyridylmethylene)‐bis‐4‐hydroxy‐2H‐1‐benzopyran‐2‐one 11 with low toxicity and dose‐dependent anticoagulantactivity in vivo.