SAR analysis of a series of acylthiourea derivatives possessing broad-spectrum antiviral activity
摘要:
A series of acylthiourea derivatives were designed, synthesized, and evaluated for broad-spectrum antiviral activity with selected viruses from Poxviridae (vaccinia virus) and two different genera of the family Bunyaviridae (Rift Valley fever and La Crosse viruses). A compound selected from a library screen, compound 1, displayed submicromolar antiviral activity against both vaccinia virus (EC50 = 0.25 mu M) and La Crosse virus (EC50 = 0.27 mu M) in cytopathic effect (CPE) assays. SAR analysis was performed to further improve antiviral potency and to optimize drug-like properties of the initial hits. During our analysis, we identified 26, which was found to be nearly fourfold more potent than 1 against both vaccinia and La Crosse viruses. Selected compounds were further tested to more fully characterize the spectrum of antiviral activity. Many of these possessed single digit micromolar and sub-micromolar antiviral activity against a diverse array of targets, including influenza virus (Orthomyxoviridae), Tacaribe virus (Arenaviridae), and dengue virus (Flaviviridae). (C) 2012 Elsevier Ltd. All rights
Inhibitors and Methods of Inhibiting Bacterial and Viral Pathogens
申请人:Allen Robert D.
公开号:US20130195796A1
公开(公告)日:2013-08-01
Compounds, pharmaceutical compositions and methods for treating viral and bacterial infections, by administering certain thiourea compounds, specifically acylthiourea, carboximidoylthiourea and S-alkyl isothiourea derivatives and analogs, in therapeutically effective amounts are disclosed.
INHIBITORS AND METHODS OF INHIBITING BACTERIAL AND VIRAL PATHOGENS
申请人:SIGA TECHNOLOGIES, INC.
公开号:US20160081950A1
公开(公告)日:2016-03-24
Compounds, pharmaceutical compositions and methods for treating viral and bacterial infections, by administering certain thiourea compounds, specifically acylthiourea, carboximidoylthiourea and S-alkyl isothiourea derivatives and analogs, in therapeutically effective amounts are disclosed.
Inhibitors and methods of inhibiting bacterial and viral pathogens
申请人:Siga Technologies, Inc.
公开号:EP2865668A2
公开(公告)日:2015-04-29
Compounds, pharmaceutical compositions and methods for treating viral and bacterial infections, by administering certain thiourea compounds, specifically acylthiourea, carboximidoylthiourea and S-alkyl isothiourea derivatives and analogs, in therapeutically effective amounts are disclosed.
A simple and efficient method for the chemoselective N-Boc protection of the amine moiety in a variety of compounds is described using di-tert-butyl dicarbonate and guanidine hydrochloride as an organocatalyst in ethanol at 35-40 degrees C. Selective mono-N-Boc protection of diamines and chemoselective protection of hydroxylamines without formation of any side products is achieved. Amino acids and peptides are N-Boc protected efficiently in excellent yields under convenient reaction conditions. (C) 2011 Elsevier Ltd. All rights reserved.
Design of More Powerful Iron-TAML Peroxidase Enzyme Mimics
作者:W. Chadwick Ellis、Camly T. Tran、Matthew A. Denardo、Andreas Fischer、Alexander D. Ryabov、Terrence J. Collins
DOI:10.1021/ja9086837
日期:2009.12.23
Environmentally useful, small molecule mimics of the peroxidase enzymes must exhibit very high reactivity in water near neutral pH. Here we describe the design and structural and kinetic characterization of a second generation of iron(III)-TAML activators with unprecedented peroxidase-mimicking abilities. Iterative design has been used to remove the fluorine that led to the best performers in first-generation iron-TAMLs. The result is a superior catalyst that meets a green chemistry objective by being comprised exclusively of biochemically common elements. The rate constants for bleaching at pH 7, 9, and 11 of the model substrate, Orange 11, shows that the new Fe-III-TAML has the fastest reactivity at pH's closer to neutral of any TAML activator to date. Under appropriate conditions, the new catalyst can decolorize Orange 11 without loss of activity for at least 10 half-lives, attesting to its exceptional properties as an oxidizing enzyme mimic.