共查询到20条相似文献,搜索用时 31 毫秒
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取代苯甲醛与4-氨基-5-(3,4,5-三甲氧基苯基)-1,2,4-三唑-3-硫酮(2)缩合生成5-(3,4,5-三甲氧基苯基)-4-取代苯基亚胺基-1,2,4-三唑-3-硫酮(3),再烷基加成化为新型5,6-2H-1,2,4-三唑[3,4-b][1,3,4]噻二嗪衍生物4.化合物结构经1HNMR 13C NMR,IR以及元素分析确认.采用噻唑兰(MTT)比色法进行化合物抑制人体前列腺癌细胞(PC3)体外活性测试,结果表明所合成的化合物具有不同程度的抑制PC3活性,其中化合物4a在10μmol·L-1浓度下对PC3的抑制率为75.9%. 相似文献
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6-硝基苯并咪唑杂环衍生物的合成 总被引:1,自引:0,他引:1
以6-硝基苯并咪唑-1-乙酰肼和5-(6-硝基苯并咪唑-1-亚甲基)-3-巯基-4-氨基-1,2,4-三唑为原料,在不同条件下合成了一系列新的均三唑〔3,4-b〕-1,3,4-噻二唑,1,2,4-三唑和1,3,4-恶二唑衍生物。化合物的结构均经元素分析、^1H NMR、IR和MS确证,并对其波谱性质进行了讨论。 相似文献
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3-取代硫基-5-(1-羟基苯基)-4H-1,2,4-三唑类化合物的合成及抑菌活性 总被引:2,自引:0,他引:2
依据邻羟基二苯醚及三唑类化合物的抗菌特性及生物活性叠加原理, 将邻羟苯基和1,2,4-三唑分子片断有机结合, 设计合成了12个新型3-取代硫基-5-(1-羟基苯基)-4H-1,2,4-三唑类化合物. 首先, 水杨酸甲酯与水合肼反应生成水杨酰肼, 水杨酰肼再与硫氰酸铵和盐酸反应, 生成5-(1-羟基苯基)-4H-1,2,4-三唑-3-硫酮(3), 最后在碱性条件下化合物3与取代苯乙酮、氯苄和碘甲烷发生烷基化反应生成目标化合物, 化合物结构经 1H NMR及IR等表征确认. 抑菌测试结果表明, 当化合物质量分数为0.01%时, 目标化合物对白色念珠菌和大肠杆菌的抑菌率高达90%, 具有强抑菌活性; 对金黄色葡萄球菌的抑菌率高达80%, 具有一定的抑菌活性. 相似文献
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YE Xiao-qin ZHANG Li-xue ** ZHANG An-jiang CHEN Xian-xing ZHANG Zi-yi . Department of Chemistry Wenzhou Teachers'''' College Wenzhou P. R. China . Chemistry Teaching Research Section Wenzhou Medical College Wenzhou P. R. China. Department of Chemistry Lanzhou University Lanzhou P. R. China 《高等学校化学研究》2002,18(4):393-396
IntroductionAmongst various heterocycles 3 ,6 -disubstituted- 7H- 1 ,2 ,4- triazolo[3 ,4- b][1 ,3 ,4]thiadiazines have received considerable attentionduring the lasttwo decades as potentially biologicalactive agents[1,2 ] . A literature survey indicated thatthis kind of N - bridged heterocycles displayed awide spectrum of biological properties,such asantimicrobial[3] ,antibacterial,antifungal[4 ] ,antiinflammatory[5] ,diuretic[6 ] ,anthelmintic,andanalgesic[7] . They can also be used as the p… 相似文献
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A series of 3-(3-alkyl-5-thioxo-1H-4,5-dihydro-1,2,4-triazol-4-yl)aminocarbonylchromones has been prepared by oxidation of 3-formylchromone with Jones' reagent followed by reaction with 3-alkyl-4-amino-4,5-dihydro-1,2,4-triazole-5(1H)-thione in the presence of POCl3. The structures of the compounds were confirmed by IR, LC-MS, and 1H NMR spectra and elemental analyses. 相似文献
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以2,5-二巯基-1,3,4-噻二唑为原料, 与水合肼缩合, 生成2,5-二肼基-1,3,4-噻二唑. 2,5-二肼基-1,3,4-噻二唑与苯甲酰氯反应生成2,5-二酰肼基-1,3,4-噻二唑, 以POCl3为环合剂环合酰肼基-1,3,4-噻二唑, 合成3,6-二取代苯基- 二-1,2,4-三唑并[3,4-b]-1,3,4-噻二唑衍生物, 合成的新化合物的结构通过元素分析、红外光谱、核磁共振氢谱和质谱予以证实, 并提出了环化反应机理. 相似文献
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ZHANG Li xue ** ZHANG An jiang CHEN Guang CHEN Fei yu JIANG Yi ping ZHANG Zi yi . Department of Chemistry Wenzhou Teachers College Wenzhou P. R. China . Department of Chemistry Lanzhou University Lanzhou 《高等学校化学研究》2002,(3)
Introduction1 ,2 ,4- Triazolo[3,4- b][1 ,3,4]thiadiazoles arecondensed heterocyclic compounds having wide-ranging application.They combine the propertiesof triazoles[1] and thiadiazoles[2 ] ,as a result,someof them show antimicrobial,antiinflammatory,fungicidal,antiviral,inhibiting plant pathogenicbacteria,herbicidal,plant- growth regulating,andother activities[3— 5] .Attaching an active methyleneto the fused heterocycle maybe change itsbioactivity.Moreover,hydrogens in the methylenebetween t… 相似文献
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ZHANG Zi-Yi ZOU NingNational Laboratory of Applied Organic Chemistry Department of Chemistry Lanzhou University Lanzhou Gansu China 《中国化学》1995,13(5):448-453
In this paper , 10 novel 6-aryl-3-(5'-phenyl-2H-tetrazole-2'-methylene)-S-triazolo[3, 4-b]-1,3,4-thiadiazoles have been synthesized by the condensation of 3-(5'-phenyl-2H-tetrazole-2'-methylene)-4-amino-5-mercapto-1,2,4-triazole with various aromatic carboxylic acids in the presence of phosphorus oxychloride. The structure of these compounds was determined by elemental analysis , UV, IR, 1H NMR and MS. Their spectral properties were also discussed. 相似文献
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4—取代苯基—6—甲基—5—硫代—1,2,4—三嗪—3—酮的合成 总被引:3,自引:0,他引:3
合成了一系列新的4,6-二取代-5-硫代-1,2,4-三嗪-3-酮类化合物,并用元素分析、IR、^1H NMR及MS对其结构进行了表征。 相似文献
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Guang Fu YANG* Zu Ming LIU Xiang Hua QING Institute of Pesticide Chemistry Central China Normal University Wuhan 《中国化学快报》2001,(10)
New challenging problems in plant protection technology have promoted research to discover more efficient pesticides. In recent years, many chemists have paid much attention to compounds bearing 1,2,4-triazolo [1,5-a] pyrimidine rings due to their broad spectrum of biological activities such as herbicidal and fungicidal effects1-7. Up to now, a great variety of these kinds of compounds have been synthesized, among which some commercially herbicides have been developed including metosulam, f… 相似文献
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Irina O. Zhuravel Oleg V. Zaremba Oleksandr S. Detistov Svitlana S. Kovalenko Valentin P. Chernykh 《合成通讯》2013,43(21):3778-3784
New 5-hydroxymethyl-8-methyl-3-(3-aryl-[1,2,4]oxadiazol-5-yl)-2H-pyrano-[2,3-c]pyridin-2-ones and their esters were synthesized. The structure of obtained compounds was determined through a complete 1H NMR analysis. 相似文献