Main metabolic pathways of o-chlorobenzylidene malononitrile (CS) in rabbits were estimated quantitatively following iv administration. The products of hydrolysis were o-chlorobenzaldehyde (o-Cbald) and malononitrile. The toxic actions of CS can be ascribed to o-Cbald.
Male adult Wistar rats dosed i.p. with o-substituted benzaldehydes (o-F, o-Cl, and o-Br = V, VI, and VII) excreted mercapturic acids in urine. These acids were identified as N-acetyl-S-(ortho-substituted benzyl)cysteines (I, II, III). The total mercapturic acid excretion as % dose (2.0 mmol/kg, n = 4) was 1.2 +/- 0.4, 6.8 +/- 0.9, and 10.4 +/- 2.0 for V, VI, and VII. p-Cl-benzaldehyde administered in the same dose showed a non-significant urinary thioether excretion. The aim of the investigation was to prove in vivo a postulated metabolic pathway of substituted benzaldehydes via sulfate esters to mercapturic acids. After a single administration of the sodium salts of o- and p-Cl-benzylsulfuric acid a significant increase in mercapturic acid excretion of 21.2 +/- 1.8% and 14.5 +/- 1.2% of dose (2.0 mmol/kg, n = 4) was found. By pretreatment with pyrazole the mercapturic acid excretion increased after administration of o-Cl-benzyl alcohol (IX) whereas a significant decrease was found after administration of o-Cl-benzaldehyde (VI). After simultaneous administration of ethanol with IX and VI an increase in mercapturic acid excretion was observed. After previous administration of pentachlorophenol a significant decrease in urinary mercapturic acid excretion for IX and VI was found. These findings are in accordance with a metabolic pathway of substituted benzaldehydes via benzyl alcohols, subsequently sulfate esters to the corresponding benzylmercapturic acids.
IDENTIFICATION AND USE: o-Chlorobenzaldehyde occurs as liquid or needles. It is used as intermediate in the preparation of triphenyl methane and related dyes, and organic intermediate. HUMAN STUDIES: There are no data available. ANIMAL STUDIES: 2-Chlorobenzaldehyde might be produced when a moist skin is exposed to the riot control agent CS (o-chlorobenzylidene malononitrile). CS hydrolysis to 2-chlorobenzaldehyde and malononitrile occurs both in vitro and in vivo. Main metabolic pathways of CS in rabbits were estimated quantitatively following iv administration. The products of hydrolysis were o-chlorobenzaldehyde and malononitrile. The toxic actions of CS can be ascribed to o-chlorobenzaldehyde. O-chlorobenzaldehyde showed negative responses in yeast when it was tested for genotoxicity without metabolic activation.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
暴露途径
该物质可以通过吸入和摄入被身体吸收。
The substance can be absorbed into the body by inhalation and by ingestion.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
吸入症状
咳嗽。喉咙痛。灼热感。
Cough. Sore throat. Burning sensation.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
皮肤症状
红斑。疼痛。
Redness. Pain.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
眼睛症状
红斑。疼痛。
Redness. Pain.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
2-Chlorobenzaldehyde might be produced when a moist skin is exposed to the riot control agent CS. CS-hydrolysis to 2-chlorobenzaldehyde and malononitrile occurs both in vitro and in vivo. No quantitative data have thus far been reported with respect to the percutaneous absorption and the cutaneous biotransformation of 2-chlorobenzaldehyde. Percutaneous absorption, biotransformation and elimination of (14)C-labeled 2-chlorobenzaldehyde was investigated in the rat. Following IV (25 uL/kg) and IP (37.5 uL/kg) (14)C-2-chlorobenzaldehyde administration to rats, the plasma radioactivity declined rapidly over a 24 hr period with similar plasma radioactivity-time profiles. Following cutaneous administration (75 uL/kg) in a closed glass-cup on the skin a slow skin penetration occurred as indicated by plasma radioactivity levels. A slow increase in plasma radioactivity was followed by a slow decline of radioactivity in plasma over a 3-day period. Most of the radioactivity was found in the urine with low levels in feces and exhaled air. The cutaneously administered radioactivity was also partly recovered from the glass-cup. For the qualitative and quantitative determination of metabolites in urine, a thin layer chromatography-radioautography method was used. The metabolic patterns of urinary excreted metabolites following cutaneous application and systemic administration of (14)C-2-chlorobenzaldehyde to rats were very similar. No parent compound was recovered from the rat urine. 2-Chlorohippuric acid was the principal urinary metabolite. Quantitatively, the urinary excretion of (14)C-2-chlorobenzyl alcohol following cutaneous application differed substantially from that after the systemic administration. There was no evidence of storage in the skin or skin toxicity of 2-chlorobenzaldehyde following cutaneous application.
[EN] HYPERVALENT IODINE CF2CF2X REAGENTS AND THEIR USE<br/>[FR] RÉACTIFS CF2CF2X À BASE D'IODE HYPERVALENT ET LEUR UTILISATION
申请人:ETH ZUERICH
公开号:WO2016019475A1
公开(公告)日:2016-02-11
A hypervalent iodine of formula (I) or formula (II) wherein R is a nucleophile and a method for their production is described. Such compounds can be used for fluoroethylation of compounds carrying a reactive group. A preferred compound carrying a reactive group is cystein in any environment such as peptide targets.
Optimization of 1,4-Naphthoquinone Hit Compound: A Computational, Phenotypic, and In Vivo Screening against Trypanosoma cruzi
作者:Leonardo S. Lara、Guilherme C. Lechuga、Caroline dos S. Moreira、Thaís B. Santos、Vitor F. Ferreira、David R. da Rocha、Mirian C. S. Pereira
DOI:10.3390/molecules26020423
日期:——
library of compounds (1a–i and 2a–j) was designed based on the structural optimization of a Hit compound derived from 1,4-naphthoquinones (C2) previously identified. The biological activity, structure-activity relationship (SAR), and the in silico physicochemical profiles of the naphthoquinone derivatives were analyzed. Most modifications resulted in increased trypanocidal activity but some substitutions
Cell adhesion-inhibiting antiinflammatory and immune-suppressive compounds
申请人:Abbott Laboratories
公开号:US20040116518A1
公开(公告)日:2004-06-17
The present invention relates to novel cinnamide compounds that are useful for treating inflammatory and immune diseases and cerebral vasospasm, to pharmaceutical compositions containing these compounds, and to methods of inhibiting inflammation or suppressing immune response in a mammal.
Synthesis of<i>o</i>-(Dimethylamino)aryl Ketones and Acridones by the Reaction of 1,1-Dialkylhydrazones and Arynes
作者:Anton V. Dubrovskiy、Richard C. Larock
DOI:10.1021/ol2016803
日期:2011.8.5
A novel, efficient route to biologically and pharmaceutically important o-(dimethylamino)aryl ketones and acridones has been developed starting from readily available 1,1-dimethylhydrazones of aldehydes and o-(trimethylsilyl)aryl triflates. The reaction proceeds under mild conditions, tolerates a wide range of functional groups, and provides the final products in good to excellent yields.
[EN] COMPOUNDS AND COMPOSITIONS COMPRISING CDK INHIBITORS AND METHODS FOR THE TREATMENT OF CANCER<br/>[FR] COMPOSÉS ET COMPOSITIONS COMPRENANT DES INHIBITEURS DES CDK ET MÉTHODES DE TRAITEMENT DU CANCER
申请人:UNIV GEORGIA STATE RES FOUND
公开号:WO2010129858A1
公开(公告)日:2010-11-11
Disclosed herein are compounds suitable for use as antitumor agents, methods for treating cancer wherein the disclosed compounds are used in making a medicament for the treatment of cancer, methods for treating a tumor comprising, administering to a subject a composition comprising one or more of the disclosed cytotoxic agents, and methods for preparing the disclosed antitumor agents.