Selective Reduction of Azines to Benzyl Hydrazones with Sodium Borohydride Catalyzed by Mesoporous Silica-Supported Silver Nanoparticles: A Catalytic Route towards Pyrazole Synthesis
作者:Evangelia Charistoudi、Michael G. Kallitsakis、Ioannis Charisteidis、Kostas S. Triantafyllidis、Ioannis N. Lykakis
DOI:10.1002/adsc.201700442
日期:2017.9.4
activity of Ag/HMS. Based on the recycling studies the catalytic system Ag/HMS‐NaBH4 was found to catalyze the selective reduction of azines nine times without significant loss of its activity. Finally, a one‐pot reaction between the in situ produced benzyl hydrazones and a series of nitrostyrenes readily provided the regioselective synthesis of 1,3,5‐subtituted pyrazoles, highlighting a useful synthetic
antifungal target. Using docking-based virtual screening and structure-basedinhibitor design, a series of novel SAP2 inhibitors were successfully identified. Among them, indolone derivative 24a showed potent SAP2 inhibitory activity (IC50 = 0.92 μM). It blocked fungi biofilm and hypha formation by down-regulating the expression of genes SAP2, ECE1, ALS3 and EFG1. As a virulence factor inhibitor, compound