A novel series of 1-acetyl-3,5-diphenyl-4,5-dihydro-(1H)-pyrazole derivatives have been synthesised and investigated for the ability to inhibit selectively monoamine oxidases, swine kidney oxidase, and bovine serum amine oxidase. The newly synthesised compounds 1-6 proved to be reversible and non-competitive inhibitors of all types of the assayed amine oxidases. Compounds inhibit monoamine oxidases potently, displaying low 150 values of particular interest. In particular 1-acetyl-3-(2,4-dihydroxyphenyl)-5-(3-methylphenyl)-4,5-dihydro-(1H)-pyrazole 6 showed to be a potent monoamine oxidase inhibitor with a K-i of about 10(-8) M. Further insights in the theoretical evaluation of the possible interactions between the compounds and monoamine oxidase B have been developed through a computational approach. (C) 2002 Elsevier Science Ltd. All rights reserved.
Chalcones. Condensation of Aromatic Aldehydes with Resacetophenone. II
作者:DURGA NATH DHAR、JAGRAJ BEHARI LAL
DOI:10.1021/jo01102a021
日期:1958.8
ANTIBIOTIC COMPOUNDS THAT INHIBIT BACTERIAL PROTEIN SYNTHESIS
申请人:The Board of Regents of the University of Texas System
公开号:US20160220510A1
公开(公告)日:2016-08-04
An aminoacylation/translation (AIT) system based on the protein synthesis system from the pathogen
Pseudomonas aeruginosa
, was used to screen chemical compounds for identifying inhibitors of protein synthesis. This system includes elongation factors: EF-Tu, EF-Ts and EF-G, aminoacyl tRNA synthetase (aaRS) specific for phenylalanine, PheRS, and ribosomes isolated from cultures of
Pseudomonas aeruginosa
. Compounds identified using this assay have been shown to contain broad spectrum activity against both Gram+ and Gram− pathogens. Methods of using the identified compounds, as well as derivatives and analogues of these compounds, as antimicrobial agents against bacterial infections are described.
Synthesis of some pyrazole derivatives and preliminary investigation of their affinity binding to P-glycoprotein
A series of substituted pyrazolines were synthesized and evaluated for their anticancer activity and for their ability to inhibit P-glycoprotein-mediated multidrug resistance by direct binding to a purified protein domain containing an ATP-binding site and a modulator interacting region. Compounds 2a and e have been found to bind to P-glycoprotein with greater affinity.