描述了derivatives衍生物与噻唑和三唑环的合成。分别通过αα-溴甲基吡唑酮3与芳酮硫代半氨基咔唑酮5a-j的反应和吡唑硫代半碳a酮4与α-β的反应,分别合成具有噻唑和三唑环的肼基结构的目标化合物7a-j和8a-g。在没有催化剂的回流条件下,溴甲基芳基酮6a-g。此外,使用一锅法开发了一种生态友好的合成化合物8a-g的简便方法。通过使用H 2 O 2诱导的具有氧化损伤的PC 12细胞,测试了目标化合物的初步生物活性。
Design and synthesis of some new thiophene and 1,3,4-thiadiazole based heterocycles
作者:Rizk E. Khidre、Ibrahim Ali M. Radini、Diaa A. Ibrahim
DOI:10.1080/10426507.2019.1598408
日期:2019.11.2
acidification with hydrogen chloride. The reaction of the ketene N,S-acetals with 2-bromo-1-[5-methyl-1-(p-tolyl)-1H-1,2,3-triazol-4-yl]ethan-1-one or 3-(2-bromoacetyl)-2H-chromen-2-one gave novel thiophenes in good yields. Treatment of the ketene N,S-acetals with hydrazonyl halides afforded 1,3,4-thiadiazoles in good yields. The stereochemistry of the synthesized compounds was studied. Graphical Abstract
Design and Synthesis of Novel 6-(5-Methyl-1<i>H</i>-1,2,3-triazol-4-yl)-5-[(2-(thiazol-2-yl)hydrazono)methyl]imidazo[2,1-<i>b</i>]thiazoles as Antimicrobial Agents
作者:Bakr F. Abdel-Wahab、Rizk E. Khidre、Ghada E. A. Awad
DOI:10.1002/jhet.2610
日期:2017.1
Novel 6‐(1,2,3‐triazol‐4‐yl)‐5‐[(2‐(thiazol‐2‐yl)hydrazono)methyl]imidazo[2,1‐b]thiazoles 7, 9a, 9b, 9c, 9d, and 11 were prepared by reaction of thiosemicarbazone 5a, 5b with either hydrazonoyl chloride 6, phenacylbromides 8 or 2‐bromo‐1‐(5‐methyl‐1‐p‐tolyl‐1H‐1,2,3‐triazol‐4‐yl)ethanone 10 respectively. The new products were tested for their antimicrobial activities using 96‐well micro‐plate assay
新颖6-(1,2,3-三唑-4-基)-5 - [(2-(噻唑-2-基)亚肼基)甲基]咪唑并[2,1- b ]噻唑类7,图9a,图9b,图9c,9d和11通过硫代半脲5a,5b与酰氯6,苯乙酰胺8或2-溴-1-(5-甲基-1-对甲苯基-1 H -1,2,3-三唑-4-基)乙酮10。使用96孔微孔板检测和化合物7测试了新产品的抗菌活性与万古霉素(参考药物)相比,其显示出优异的抗菌活性,而化合物5b和9c对酵母显示出良好的效果。确定最小抑菌浓度(MIC),化合物7对革兰氏阳性菌的MIC最低,而化合物5b对酵母菌的MIC最低。
A new library of 1,2,3‐triazole based benzofuran scaffolds: Synthesis and biological evaluation as potential antimicrobial agents
A library of new 1,2,3-triazole basedbenzofuran derivatives was constructed via synthesizing them through the Rap-Stoermer reaction in moderate to good yields. Various reaction conditions were examined to develop an optimized synthetic route for affording the desired products in good yields. All the synthesized compounds were characterized by 1H-NMR, 13C-NMR, FT-IR, and mass spectral data. The title
Convenient Synthesis of New Heterocycles Containing the Quinoxaline Ring System
作者:Hanan A. Mohamed、Mohammad Hayal Alotaibi、Benson M. Kariuki、Gamal A. El-Hiti
DOI:10.2174/1570178616666190311161505
日期:2020.1.7
the current article was to describe simple procedures for the synthesisnew heterocycles incorporating quinoxaline moiety using benzene-1,2-diamine and quinoxaline-2,3-dithiol as precursors. Simple synthetic methods were described for the synthesis of new heterocycles using commercially available chemicals. Also, the structures of the new compounds were determined using analytical and spectroscopic
当前文章的目的是描述使用苯-1,2-二胺和喹喔啉-2,3-二硫醇作为前体合成包含喹喔啉部分的新杂环的简单程序。描述了使用市售化学品合成新杂环的简单合成方法。此外,使用分析和光谱数据(包括单 X 射线晶体结构)确定了新化合物的结构。使用简单方便的方法合成了一系列含有喹喔啉核的新型杂环化合物,收率良好。已经描述了一种用于合成可能难以通过其他途径合成的含有喹喔啉部分的新杂环的方法。
Synthesis and Characterization of Novel 2-(1,2,3-Triazol-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)thiazoles and 2-(4,5-Dihydro-1H-pyrazol-1-yl)-4-(1H-1,2,3-triazol-4-yl)thiazoles
作者:Benson M. Kariuki、Bakr F. Abdel-Wahab、Hanan A. Mohamed、Mohamed S. Bekheit、Gamal A. El-Hiti
DOI:10.3390/molecules27248904
日期:——
Reactions of 1-(5-methyl)-1H-1,2,3-triazol-4-yl)ethan-1-ones and benzaldehydes in ethanol under basic conditions gave the corresponding chalcones. Reactions of the chalcones combined with thiosemicarbazide in dry ethanol containing sodium hydroxide afforded the corresponding pyrazolin-N-thioamides. Reactions of the synthesized pyrazolin-N-thioamides and several ketones (namely, ethyl 2-chloro-3-oxobutanoate