1,ω-双(4-氨基-1,2,4-三唑-5(1 H)-亚乙基-3-基硫烷基)烷烃:新型双(S-三唑并[3,4- b ] [1]的通用前体,3,4] thiadiazines)和新型双(大环席夫碱)
摘要:
尝试了两种合成路线来合成新颖的双(5,6-二氢-S-三唑并[3,4- b ]噻二嗪)12a,b和14。在第一途径中,使双(氨基三唑)4a,b与适当的α-卤代酮或α-卤代酯反应,得到相应的双(S-三唑并[3,4- b ]噻二嗪)11a-d,然后用NaBH还原4。在第二种方法中,使二(席夫碱)13d与适当的α-卤代酸酯在回流的含TEA的DMF中反应,得到目标化合物14。4a,b的环缩合用适当的双(羰基)醚15a,b在回流的乙酸中,在高稀释条件下,得到相应的大环席夫碱16a-c。后者用适当的卤素化合物进行烷基化,得到相应的烷基化衍生物17a-d。
DOI:
10.1002/jhet.5570420209
作为产物:
描述:
1,3-二溴丙烷 、 mono potassium salt of 4-amino-3,5-dimercapto-1,2,4-triazole 在
氢氧化钾 作用下,
以
乙醇 为溶剂,
反应 1.0h,
以65%的产率得到1,3-bis(4-amino-2,4-dihydro-3-thioxo-3H-1,2,4-triazol-5-ylthio)propane
2-Bromo-1-(1H-pyrazol-4-yl)ethanone: versatile precursors for novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines}
作者:Mostafa E. Salem、Ahmed F. Darweesh、Ahmad M. Farag、Ahmed H.M. Elwahy
DOI:10.1016/j.tet.2015.12.024
日期:2016.2
A simple synthesis of novel mono-, bis- and poly6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines} is reported. The formation of the target compounds was achieved by the reaction of 2-bromo-1-(5-methyl-1-phenyl-1H-pyrazol-4-yl)ethanone with the appropriate aminotriazolethiol or by the reaction of 6-pyrazolyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-3-thiol with the appropriate di- and
新型单,双和聚6-(1 H-吡唑-4-基)-[1,2,4]三唑[3,4- b ] [1,3,4]噻二嗪的简单合成被报道。通过2-溴-1-(5-甲基-1-苯基-1 H-吡唑-4-基)乙酮与适当的氨基三唑硫醇的反应或6-吡唑基-的反应实现目标化合物的形成。7 H- [1,2,4]三唑并[3,4- b ] [1,3,4]噻二嗪-3-硫醇与适当的二-和聚(溴)化合物。通过光谱和元素分析确定了新合成化合物的结构。
Effective synthesis of new benzo-fused macrocyclic and heteromacrocyclic bis(Schiff bases)
作者:Ahmed A. M. Ahmed、Ahmed E. M. Mekky、Sherif M. H. Sanad
DOI:10.1007/s13738-021-02409-3
日期:2022.5
glacial acetic acid via sodium acetate-mediated cyclocondensation of the appropriate of 2,2'-(alkane-1,ω-diylbis(sulfanediyl))dianiline dihydrochloride with bis(aldehydes). Moreover, bis(4-amino-4H-1,2,4-triazole-3-thiol), linked to propane core via thioether, was cyclocondensed with bis(aldehydes) in glacial acetic acid to prepare new S-triazole-fused thiamacrocyclic bis(Schiff bases). The previous macrocycles
在这项研究中,合成子 2-羟基-5-((芳硫基)甲基)苯甲醛与 1, ω-二卤代烷烃反应生成相应的双(醛)。先前的前体在冰醋酸中与合适的烷烃-1, ω-二胺反应生成一系列新的大环双(席夫碱)。随后,在冰醋酸中,通过乙酸钠介导的适当的 2,2'-(烷烃-1,ω-二基双(硫烷二基))二苯胺二盐酸盐与双(醛)。此外,双(4-氨基-4 H -1,2,4-三唑-3-硫醇)通过硫醚连接到丙烷核,在冰醋酸中与双(醛)环缩合制备新的S-三唑稠合的硫大环双(席夫碱)。先前的大环与两当量的碘甲烷在甲醇钠的甲醇溶液中反应,得到大环双(甲硫基)衍生物。令人惊讶的是,噻吩并[2,3 - b ]噻吩连接的双(4-氨基-3-苯基-4 H -1,2,4-三唑)与合适的双(醛)在冰醋酸中的反应导致一个新系列的 [1,2,4] 三唑并 [3,4- b ][1,3,4] 噻二嗪稠合大环化合物。所有新的大环化合物都以良好到极
Synthesis of Some New 1,3/ or 1,4-Bis(Glucopyranosyl-1,2,4-Triazol-5-Ylthio)Propanes/ or Butanes as Potential Antimicrobial Agents
作者:Ashraf A. Abbas、Nasser S. A. M. Khalil
DOI:10.1080/15257770500230632
日期:2005.8
Glucosidation of the appropriate 1,3 or 1,4-bis(4-amino or arylideneamino-2,4-dihydro-3-thioxo3H- 1, 2, 4-triazol-5 ylthio)propanes or butanes with 2, 3, 4, 6-tetra-O-acetyl-alpha-D-glucopyranosyl bromide followed by chromatographic separation gave the corresponding N-, S-, and N S-bis(glucosides). Chemical transformation leading to new functionalities has been achieved. Antimicrobial screening of 10 selected compounds resulted in their activity against Aspergillus fumigatus, Penicillium italicum, Syncephalastrum racemosum, Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis, and Escherichia coli.