Structure−Activity Relationships in a Series of Orally Active γ-Hydroxy Butenolide Endothelin Antagonists
作者:William C. Patt、Jeremy J. Edmunds、Joseph T. Repine、Kent A. Berryman、Billy R. Reisdorph、Chet Lee、Mark S. Plummer、Aurash Shahripour、Stephen J. Haleen、Joan A. Keiser、Mike A. Flynn、Kathleen M. Welch、Elwood E. Reynolds、Ron Rubin、Brian Tobias、Hussein Hallak、Annette M. Doherty
DOI:10.1021/jm9606507
日期:1997.3.1
to the subnanomolar ETA selective antagonist PD156707, IC50's = 0.3 (ET(A)) and 780 nM (ET(B)). This series of compounds exhibited functional activity exemplified by PD156707. This derivative inhibited the ETA receptor mediated release of arachidonic acid from rabbit renal artery vascular smoothmuscle cells with an IC50 = 1.1 nM and also inhibited the ET-1 induced contraction of rabbit femoral artery
Hydroxychalcone inhibitors of Streptococcus mutans glucosyl transferases and biofilms as potential anticaries agents
作者:Bhavitavya Nijampatnam、Luke Casals、Ruowen Zheng、Hui Wu、Sadanandan E. Velu
DOI:10.1016/j.bmcl.2016.06.033
日期:2016.8
flavonols on S. mutansbiofilms and have suggested the mechanism of action through their effect on S. mutans glucosyltransferases (Gtfs). These enzymes metabolize sucrose into water insoluble and soluble glucans, which are an integral measure of the dental caries pathogenesis. Numerous studies have shown that flavonols and polyphenols caninhibit Gtf and biofilmformation at millimolar concentrations. We have
Antimalarial Alkoxylated and Hydroxylated Chalones: Structure−Activity Relationship Analysis
作者:Mei Liu、Prapon Wilairat、Mei-Lin Go
DOI:10.1021/jm0101747
日期:2001.12.1
among the active compounds. Hydroxylatedchalcones were less active than the corresponding alkoxylated analogues. When evaluated in vivo, 8 and 208 were comparable to chloroquine in extending the lifespan of infected mice. Multivariate data analysis showed that in vitro activity was mainly determined by the properties of ring B. Quantitative structure-activityrelationship models with satisfactory predictive
(IC50 = 3.6 nmol/L), good selectivity, excellent chemical stability and suitable metabolic stability. Further investigations showed that B11 acted as a competitive inhibitor of hNotum, while this agent (5 µmol/L) significantly weaken the migration abilities of colorectal cancercells. Collectively, this study deciphers the SARs of chalcones as hNotum inhibitors and reports a novel and potent hNotum inhibitor
Solution-phase parallel synthesis of substituted chalcones and their antiparasitary activity against Giardia lamblia
作者:Julio Montes-Avila、Sylvia P. Díaz-Camacho、Josefina Sicairos-Félix、Francisco Delgado-Vargas、I.A. Rivero
DOI:10.1016/j.bmc.2009.02.052
日期:2009.9
A library of 25-membered chalcones was prepared by parallel synthesis. Substituted acetophenones and benzaldehydes were condensed using the Claisen-Schmidt base-catalyzed aldol condensation. Several chalcones showed in vitro antiparasitic activity against Giardia lamblia. The highest activity observed for the IC50 values were 12.72, 15.05 and 15.31 mu g/mL, respectively; these are potential leads for the development of antigiardial compounds. (C) 2009 Elsevier Ltd. All rights reserved.