SAR Studies and Biological Characterization of a Chromen-4-one Derivative as an Anti-Trypanosoma brucei Agent
摘要:
Chemical modulation of the flavonol 2-(benzo[d] [1,3]dioxo1-5-y1)-chromen-4-one (1), a promising anti-Trypanosomatid agent previously identified, was evaluated through a phenotypic screening approach. Herein, we have performed structure activity relationship studies around hit compound 1. The pivaloyl derivative (13) showed significant anti-T. brucei activity (EC50 = 1.1 1iM) together with a selectivity index higher than 92. The early in vitro ADME-tox properties (cytotoxicity, mitochondria] toxicity, cytochrome P450 and hERG inhibition) were determined for compound 1 and its derivatives, and these led to the identification of some liabilities. The 1,3-benzodioxole moiety in the presented compounds confers better in vivo pharmacokinetic properties than those of classical flavonols. Further studies using different delivery systems could lead to an increase of compound blood levels.
isomerase Pin1 plays a crucial role in the development of human cancers. Recently, we have disclosed that Pin1 regulates the biogenesis of miRNA, which is aberrantly expressed in HCC and promotes HCC progression, indicating the therapeutic role of Pin1 in HCC therapy. Here, 7‐(benzyloxy)‐3,5‐dihydroxy‐2‐(4‐methoxyphenyl)‐8‐(3‐methylbut‐2‐en‐1‐yl)‐4H‐chromen‐4‐one (AF‐39) was identified as a novel Pin1
A simple, efficient, rapid, and ecofriendly synthesis of flavonols in >90% yield from 2′‐(mesyloxy)epoxychalcones (=2‐(3‐aryl‐2,3‐epoxypropanoyl)phenyl methanesulfonates) promoted by montmorilloniteKSFclay and assisted by microwaveirradiation has been described.
Effect of an Electron-Donating Substituent at the 3′,4′-position of 3-Hydroxyflavone: Photophysics in Bulk Solvents
作者:Deborin Ghosh、Giasuddin Ahamed、Shaikh Batuta、Naznin Ara Begum、Debabrata Mandal
DOI:10.1021/acs.jpca.5b09681
日期:2016.1.14
was stabilized in relatively polarsolvents, whereupon the enol → tautomer excited state intramolecular proton-transfer (ESIPT) rate decreased. Hydrogen-bonding solvents caused further retardation by interfering with the intramolecularhydrogenbond that promotes ESIPT. Among these solvents, hydrogenbond donors appear to be more efficient ESIPT inhibitors than hydrogenbond acceptors. Femtosecond fluorescence
LACTATE DEHYDROGENASE INHIBITOR AND ANTIEPILEPTIC DRUG CONTAINING SAME
申请人:National University Corporation Okayama University
公开号:EP3257510A1
公开(公告)日:2017-12-20
The invention provides a lactate dehydrogenase inhibitor that makes it possible to suppress refractory epilepsy in which conventional antiepileptic drugs are ineffective, and an antiepileptic drug containing said inhibitor. The lactate dehydrogenase inhibitor of the invention contains a compound represented by formula (III); i.e., isosafrole or a compound having isosafrole as a scaffold, and the antiepileptic drug of the invention has these compounds as an active ingredient.
Dhoubhadel, S. P.; Tuladhar, Sudersan M.; Tuladhar, Sarbajna M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1981, vol. 20, # 6, p. 511 - 512
作者:Dhoubhadel, S. P.、Tuladhar, Sudersan M.、Tuladhar, Sarbajna M.、Wagley, Pradyumna P.