Synthesis and biological evaluation of pyrethroid insecticide-derivatives as a chemical inducer for Bdnf mRNA expression in neurons
摘要:
Brain-derived neurotrophic factor (BDNF) plays a fundamental role in neuronal synaptic plasticity. A decrease of plasticity in the brain may be related to the pathogenesis of neurodegenerative or psychiatric disorders. Pyrethroid insecticides, which affect sodium channels in neurons, are widely used to control insect pests in agriculture and in the home. We previously found that deltamethrin (DM), a type II pyrethroid, increased Bdnf mRNA expression in cultured rat cortical neurons. However, the cyano group at the alpha-position of type II pyrethroids is likely susceptible to hydrolytic degradation and, its degraded product, hydrogen cyanide, could generate a cellular toxicity in the human body. To determine if the cyano group is required for the Bdnf exon IV-IX (Bdnf eIV-IX) mRNA expression induced by type II pyrethroids, for this study we synthesized a series of derivatives, in which the cyano group at the alpha-position was replaced with an ethynyl group. Then we added various substituents at the terminal position of the ethynyl group, and biologically evaluated the effects of these derivatives on Bdnf eIV-IX mRNA expression. These ethynyl derivatives induced the Bdnf eIV-IX mRNA expression in a concentration-dependent manner, at varying levels but lower levels than that evoked by DM. The mechanisms for the Bdnf induction and the morphological changes of neurons were the same whether the cyano or ethynyl group was included in the compounds. (C) 2012 Elsevier Ltd. All rights reserved.
Insecticidal cyclopropane carboxylic acid derivatives with
申请人:Roussel Uclaf
公开号:US04542142A1
公开(公告)日:1985-09-17
Novel isomers and mixtures thereof of cyclopropane carboxylic acid derivatives with a 3-unsaturated side chain of the formula ##STR1## The double bond having Z or E geometry and having insecticidal and nematocidal activity as well as plant and animal acaricidal activity.
Nouveaux éthers dont les restes organiques comportent des atomes chiraux, leur procédé de préparation et leur application au dédoublement des alcools, des phénols ou de certains composés de structure lactonique
申请人:ROUSSEL-UCLAF
公开号:EP0004493A1
公开(公告)日:1979-10-03
Nouveaux éthers dont les restes organiques comportent des atomes chiraux, leur procédé de préparation et leur application au dédoublement des alcools, des phénols ou de certains composés de structure lactonique.
L'invention concerne les nouveaux composés de formule 1:
dans laquelle A est une chaîne hydrocarbonée de 1 à 10 chaînons, pouvant comporter un ou plusieurs hétéroatomes, une ou plusieurs insaturations et pouvant être de type mono ou polycyclique, y compris spiro ou endo, comportant un ou plusieurs atomes chiraux ou de configuration spatiale entraînant une chiralité, Z est un reste d'alcool ou de phénol comportant au moins un carbone asymétrique, ou de configuration spatiale entraînant une chiralité, Z étant toutefois différent de (R) ou (S) α-cyano 3-phénoxy benzyle lorsque A est une chaîne
leur procédé de préparation et leur application au dédoublement des alcools, des phénols ou de certaines lactones.
有机残基含有手性原子的新醚,其制备工艺及其在醇类、酚类或某些内酯结构化合物的分解中的应用。
本发明涉及式 1 的新化合物:
其中 A 是 1 至 10 元烃链,可含有一个或多个杂原子或一个或多个不饱和基,可为单环或多环类型,包括螺环或内环,含有一个或多个手性原子或具有引起手性的空间构型,Z 是醇或酚残基,含有至少一个不对称碳或具有引起手性的空间构型,但当 A 为链时,Z 不包括(R)或(S)α-氰基-3-苯氧基苄基。
它们的制备方法及其在拆分醇、酚或某些内酯中的应用。
Pyrimidine derivatives
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0227415A2
公开(公告)日:1987-07-01
There are described novel pyrimidine derivatives of formula :
wherein R1 is hydrogen or halo, R2 is a branched alkyl or cycloalkyl group and Q is a group RO- where R is the residue of an alcohol ROH which forms insecticidally active ester with permethrin acid or cyhalothrin acid. The compounds are useful as acaricides and insecticides. There are also described novel compounds of formula I wherein Q is halo, hydroxy or lower alkyl which are useful as intermediates.
所述新型嘧啶衍生物为式:
其中 R1 是氢或卤代,R2 是支链烷基或环烷基,Q 是基团 RO-,其中 R 是醇 ROH 的残基,它与氯菊酯酸或氯氰菊酯酸形成具有杀虫活性的酯。这些化合物可用作杀螨剂和杀虫剂。还描述了式 I 的新型化合物,其中 Q 为卤代、羟基或低级烷基,可用作中间体。
Cyclopropyl carboxylate compounds, a process for their manufacture and their use as pesticides
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.