Synthesis and structure-activity relationship study of pyrrolidine-oxadiazoles as anthelmintics against Haemonchus contortus
摘要:
Parasitic roundworms (nematodes) are significant pathogens of humans and animals and cause substantive socioeconomic losses due to the diseases that they cause. The control of nematodes in livestock animals relies heavily on the use of anthelmintic drugs. However, their extensive use has led to a widespread problem of drug resistance in these worms. Thus, the discovery and development of novel chemical entities for the treatment of parasitic worms of humans and animals is needed. Herein, we describe our medicinal chemistry optimization efforts of a phenotypic hit against Haemonchus contortus based on a pyrrolidine-oxadiazole scaffold. This led to the identification of compounds with potent inhibitory activities (IC50 = 0.78-22.4 mu M) on the motility and development of parasitic stages of H. contortus, and which were found to be highly selective in a mammalian cell counter-screen. These compounds could be used as suitable chemical tools for drug target identification or as lead compounds for further optimization. (C) 2020 Elsevier Masson SAS. All rights reserved.
Synthesis and SAR of New 5-Phenyl-3-ureido-1,5-benzodiazepines as Cholecystokinin-B Receptor Antagonists
作者:Antonella Ursini、Anna M. Capelli、Robin A. E. Carr、Paolo Cassarà、Mauro Corsi、Ornella Curcuruto、Giovanni Curotto、Michele Dal Cin、Silvia Davalli、Daniele Donati、Aldo Feriani、Harry Finch、Gabriella Finizia、Giovanni Gaviraghi、Marc Marien、Giorgio Pentassuglia、Stefano Polinelli、Emiliangelo Ratti、Aldo Reggiani、Giorgio Tarzia、Giovanna Tedesco、Maria E. Tranquillini、David G. Trist、Frank T. M. Van Amsterdam
DOI:10.1021/jm990967h
日期:2000.10.1
A series of 5-phenyl-3-ureidobenzodiazepine-2,4-diones was synthesized and evaluated as cholecystokinin-B (CCK-B) receptorantagonists. Structure-activity relationship (SAR) studies revealed the importance of the N-1 substituent for potent and selective CCK-B affinity. Addition of substituents at the urea side chain provided in some cases more potent compounds. Moreover the introduction of bulky substituents
The invention describes compounds of the general formula I
or the pharmaceutically acceptable salts thereof,
wherein R
1
, R
2
, R
3
and X are herein described,
a process for their manufacture, medicaments containing them as well as the use of these compounds as pharmaceutically active agents. The compounds show activity as antiproliferative agents and may be especially useful for the treatment of cancer.
[EN] DIAMINOCYCLOHEXANE COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS DE DIAMINOCYCLOHEXANE ET LEURS UTILISATIONS
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2013012829A1
公开(公告)日:2013-01-24
The present invention provides compounds of Formula (I) or a stereoisomer, or a pharmaceutically acceptable salt thereof, wherein all of the variables are as defined herein. These compounds are agonists, partial agonists and modulators of the NPY Y4 receptor and may be used for the treatment and prophylaxis of various diseases and conditions.
Identification of Inhibitors of the Leishmania cdc2-Related Protein Kinase CRK3
作者:Laura A. T. Cleghorn、Andrew Woodland、Iain T. Collie、Leah S. Torrie、Neil Norcross、Torsten Luksch、Chido Mpamhanga、Roderick G. Walker、Jeremy C. Mottram、Ruth Brenk、Julie A. Frearson、Ian H. Gilbert、Paul G. Wyatt
DOI:10.1002/cmdc.201100344
日期:2011.12.9
focussed kinase set of ∼3400 compounds to identify potent and parasite‐selective inhibitors of an enzymatic Leishmania CRK3–cyclin 6 complex. The aim of this study is to provide chemical validation that Leishmania CRK3–CYC6 is a drug target. Eight hit series were identified, of which four were followed up. The optimisation of these series using classical SAR studies afforded low‐nanomolar CRK3 inhibitors
Synthesis and investigation of effects of 2-[4-[[(arylamino)carbonyl]amino]phenoxy]-2-methylpropionic acids on the affinity of hemoglobin for oxygen: structure-activity relationships
作者:Iraj Lalezari、Parviz Lalezari
DOI:10.1021/jm00130a021
日期:1989.10
series of 2-[4-[[[(substituted-phenyl)amino]carbonyl]amino]phenoxy]-2- methylpropionic acids and other substituted phenoxyacetic acids were synthesized and tested for their ability to reduce the affinity of hemoglobin for oxygen. 2-[4-[[[(3,4,5-trichlorophenyl)amino]carbonyl]amino]phenoxy]-2- methylpropionic acid was found to be the most potent compound known. Structure-activityrelationships of the compounds