Synthesis of arylsulfonyl-quinones and arylsulfonyl-1,4-diols as FabH inhibitors: Pd-catalyzed direct C-sulfone formation by CS coupling of quinones with arylsulfonyl chloride
摘要:
The Pd-catalyzed direct C-sulfone formation by C-S coupling of quinones with arylsulfonyl chloride has been developed. This methodology provides an effective, convenient method for the synthesis of aryl-sulfonyl-quinones and arylsulfonyl-1,4-diols, which are potent inhibitors of FabH. (C) 2014 Elsevier Ltd. All rights reserved.
Metal-free sulfonylation of quinones with sulfonyl hydrazides in water: Facile access to mono-sulfonylated hydroquinones
摘要:
This paper describes a simple and practical protocol for the direct synthesis of monosulfonylated hydroquinones through a transition-metal-free cross-coupling between quinones and sulfonyl hydrazides in water. The procedure tolerates a variety of quinones and widely available sulfonyl hydrazides. (C) 2017 Elsevier Ltd. All rights reserved.
AbstractA concise, efficient method to sulfonyl quinones and sulfonyl-1,4-diols through Ir-catalyzed C–S coupling of quinones with sulfonylchloride has been developed. Thus, this methodology proves its value as a versatile synthetic tool for a broad range of sulfonyl quinones, producing good to excellent yields. Graphical Abstract
Synthesis and biological evaluation of novel sulfonyl-naphthalene-1,4-diols as FabH inhibitors
作者:Mamoun M. Alhamadsheh、Norman C. Waters、Sarbjot Sachdeva、Patricia Lee、Kevin A. Reynolds
DOI:10.1016/j.bmcl.2008.10.097
日期:2008.12
A series of analogs of 2-tosylnaphthalene-1,4-diol were prepared and were found to be potent 10-20 nM reversible inhibitors of the Escherichia coli FabH enzyme. The inhibitors were also effective but to a lesser degree (30 nM-5 mu M), against the Mycobacterium tuberculosis and Plasmodium falciparum FabH enzymes. Preliminary SAR studies demonstrated that the sulfonyl group and naphthalene-1,4 diol were required for activity against all enzymes but the toluene portion could be significantly altered and leads to either modest increases or decreases in activity against the three enzymes. The in vitro activity of the analogs against E. coli FabH parallel the in vivo activity against E. coli TolC strain and many of the compounds were also shown to have antimalarial activity against P. falciparum. (C) 2008 Published by Elsevier Ltd.
An Optical Method for the Study of Reversible Organic Oxidation—Reduction Systems. III. Preparation and Use of a New Optically Active Standard