Synthesis and methemoglobinemia-inducing properties of analogues of para-aminopropiophenone designed as humane rodenticides
摘要:
A number of structural analogues of the known toxicant para-aminopropiophenone (PAPP) have been prepared and evaluated for their capacity to induce methemoglobinemia-with a view to their possible application as humane pest control agents. It was found that an optimal lipophilicity for the formation of methemoglobin (metHb) in vitro existed for alkyl analogues of PAPP (aminophenones 1-20; compound 6 metHb% = 74.1 +/- 2). Besides lipophilicity, this structural sub-class suggested there were certain structural requirements for activity, with both branched (10-16) and cyclic (17-20) alkyl analogues exhibiting inferior in vitro metHb induction. Of the four candidates (compounds 4, 6, 13 and 23) evaluated in vivo, 4 exhibited the greatest toxicity. In parallel, aminophenone bioisosteres, including oximes 30-32, sulfoxide 33, sulfone 34 and sulfonamides 35-36, were found to be inferior metHb inducers to lead ketone 4. Closer examination of Hammett substituent constants suggests that a particular combination of the field and resonance parameters may be significant with respect to the redox mechanisms behind PAPPs metHb toxicity. (C) 2013 Elsevier Ltd. All rights reserved.
[EN] DIHYDROPYRIDAZINONES SUBSTITUTED WITH PHENYLUREAS<br/>[FR] DIHYDROPYRIDAZINONES SUBSTITUÉES PAR DES PHÉNYLURÉES
申请人:BAYER PHARMA AG
公开号:WO2018086703A1
公开(公告)日:2018-05-17
Compounds of formula (I) which are nicotinamide phosphoribosyltransferase (NAMPT) inhibitors and their use for the treatment of hyperproloferative diseases and/or disorders responsive to induction of cell death.
[EN] EIF4E INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS D'EIF4E ET LEURS UTILISATIONS
申请人:PIC THERAPEUTICS INC
公开号:WO2021178488A1
公开(公告)日:2021-09-10
The present invention provides compounds inhibiting elF4E activity and compositions and methods of using thereof.
本发明提供了抑制elF4E活性的化合物以及使用它们的组合物和方法。
Fused pyridine derivatives
申请人:Eisai Co., Ltd.
公开号:US06340759B1
公开(公告)日:2002-01-22
The present provides a condensed pyridine compound (I) represented by the following formula:
(wherein, R2 represents
ring A represents benzene ring, pyridine ring, thiophene ring or furan ring; and
B represents
its pharmaceutically acceptable salt or hydrates thereof, which is a clinically useful medicament having a serotonin antagonism, in particular, that for treating, ameliorating or preventing spastic paralysis or central muscle relaxants for ameliorating myotonia.
The first highlyenantioselectivedirect alpha-amination of aryl ketones was reported to be catalyzed by organic primary amines derived from cinchona alkaloids. Excellent enantioselectivities (88-99% ee) have been achieved for a broad spectrum of aryl ketones. The presence of 4 A molecular sieves was of great assistance for the high conversions and enantiocontrol.
Photoredox Reaction of 2-Mercaptothiazolinium Salts with Silyl Enol Ethers
作者:Artem A. Zemtsov、Salavat S. Ashirbaev、Vitalij V. Levin、Vladimir A. Kokorekin、Alexander A. Korlyukov、Alexander D. Dilman
DOI:10.1021/acs.joc.9b02478
日期:2019.12.6
of free radicals from thiazolinium salts upon photocatalytic reduction is described. The thiazolinium salts are generated by treatment with methyl triflate of 2-mercaptothiazolines, which can be readily obtained from alkyl bromides and tosylates via a nucleophilic substitution reaction or by hydrothiolation of alkenes. Silyl enol ethers were used to trap the radicals, furnishing ketones after successive