Synthesis and Antifeedant Activity of New Oxadiazolyl 3(2H)-Pyridazinones
摘要:
A total of 20 new compounds containing the oxadiazolyl 3(2H)-pyridazinone moiety were synthesized. The structures of all the compounds were confirmed by H-1 NMR, IR, MS, and elemental analysis. Their insect antifeedant activities against Asiatic corn borer Ostrinia furnacalis (Guenee) were examined and compared with commercial azadirachtin. The compounds exhibited significant levels of activity. The feeding deterrency values of IIIa,j were 57% and 51% at 500 mg/kg concentration, respectively.
[EN] TETRAZOLINONE COMPOUNDS AND ITS USE AS PESTICIDES<br/>[FR] COMPOSÉS DE TÉTRAZOLINONE ET LEUR UTILISATION EN TANT QUE PESTICIDES
申请人:SUMITOMO CHEMICAL CO
公开号:WO2013162072A1
公开(公告)日:2013-10-31
The present invention provides a compound having an excellent efficacy for controlling pests. A tetrazolinone compound of a formula (1): [wherein R1 represents an C6-C16 aryl group, an C1-C12 alkyl group, or a C3-C12 cycloalkyl group, etc., which each optionally be substituted; R2, R3, R4 and R5 represent independently of each other a hydrogen atom, a halogen atom or an C1-C3 alkyl group, etc.; R6 represents an C1-C6 alkyl group, a C3-C6 cycloalkyl group, a halogen atom, a C1-C6 haloalkyl group, an C2-C6 alkenyl group, an C1-C6 alkoxy group, or a C1-C6 haloalkoxy group, etc.; R7, R8 and R9 represent independently of each other a hydrogen atom, a halogen atom, or an C1-C4 alkyl group, etc.; X represents an oxygen atom or a sulfur atom; and R10 represents an C1-C6 alkyl group, etc.] shows an excellent controlling efficacy on pests.
A series of novel sulfide derivatives containing 1,3,4-oxadiazole and pyridine were synthesized, characterized, and tested for their antibacterial activity against tobacco bacterial wilt and rice bacterial blight and for insecticidal activity toward diamondback moth. The results showed that some compounds had good insecticidal and bactericidal activity, e.g., the activities of compounds 6e and 6g-6j toward tobacco bacterial wilt were much better than those of commercial thiodiazole-copper, and some of the synthesized compounds possessed good insecticidal activity against Plutella xylostella. Compounds 6d, 6h, 6j, 6l, 6p, 6r, and 6p displayed over 93% activity at 500 mg L$^-1}$.
convenient and efficient route for the chemoselective synthesis of carbohydrazide, arenesulfonylhydrazide, and thiosemicarbazone derivatives of 5H-pyrrolo[3,4-b]pyrazine and 1H-pyrrolo[3,4-b]quinoxaline from the corresponding dinitriles and substituted hydrazines was elaborated. The synthesis of starting pyrazine-2,3-dicarbonitrile was sufficiently improved by using concentrated HCl as a catalyst. A convenient
摘要 从相应的二腈和取代的肼类化合物化学选择性合成5 H-吡咯并[3,4- b ]吡嗪和1 H-吡咯并[3,4- b ]喹喔啉的碳酰肼,芳烃磺酰肼和硫代半脲衍生物的便捷有效途径被详细阐述。通过使用浓HCl作为催化剂,起始吡嗪-2,3-二腈的合成得到了充分改善。 从相应的二腈和取代的肼类化合物化学选择性合成5 H-吡咯并[3,4- b ]吡嗪和1 H-吡咯并[3,4- b ]喹喔啉的碳酰肼,芳烃磺酰肼和硫代半脲衍生物的便捷有效途径被详细阐述。通过使用浓HCl作为催化剂,起始吡嗪-2,3-二腈的合成得到了充分改善。
Novel 4H-1,3,4-oxadiazin-5(6H)-ones with hydrophobic and long alkyl chains: Design, synthesis, and bioactive diversity on inhibition of monoamine oxidase, chitin biosynthesis and tumor cell
作者:Shao-Yong Ke、Xu-Hong Qian、Feng-Yi Liu、Ni Wang、Qing Yang、Zhong Li
DOI:10.1016/j.ejmech.2008.10.015
日期:2009.5
chains were designed and synthesized by direct cyclization reaction of N′-alkylation substituted aroylhydrazines with chloroacetyl chloride. The preliminary assays showed that some of the compounds displayed moderate to good inhibitoryactivities toward monoamineoxidase (MAO) at the concentration of 10−5–10−3 M, and antitumor activities against human lung cancer A-549 and human prostate cancer PC-3 cell
通过N'-烷基化取代的芳酰肼与氯乙酰氯的直接环化反应,设计合成了一系列具有疏水性和长链性的含氮杂环4 H -1,3,4-恶二嗪-5(6 H)-ones衍生物。初步分析表明,某些化合物在10 -5 –10 -3 M的浓度下对单胺氧化酶(MAO)表现出中等至良好的抑制活性,并且对人肺癌A-549和人前列腺癌PC-具有抗肿瘤活性。 3个μM水平的细胞系,可能为抗癌药物提供新的支架。此外,化合物5i和5m 在几丁质生物合成中显示出显着的抑制活性,这可能代表了一类新型的几丁质合成抑制剂。
Synthesis and anticonvulsant activity of ethyl 1-(2-arylhydrazinecarboxamido)-2,2-dimethylcyclopropanecarboxylate derivatives
作者:Xianran He、Min Zhong、Tao Zhang、Wen Wu、Zhongyuan Wu、Yuling Xiao、Xianming Hu
DOI:10.1016/j.ejmech.2012.05.037
日期:2012.8
the development of new anticonvulsants, twenty three 1-(2-arylhydrazinecarboxamido)-2,2-dimethylcyclopropanecarboxylate derivatives were synthesized and tested for anticonvulsant activity using the maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ) screens, which are the most widely employed seizure models for early identification of candidate anticonvulsants. Their neurotoxicity was