在0〜5℃下,将一系列重氮化的苯胺和苯胺衍生物与丙二腈在吡啶中的溶液反应,得到1a-1m的化合物。然后通过将芳基偶氮丙二腈化合物与肼偶合来合成4-芳基偶氮-3,5-二氨基-1H-吡唑(2a-2m)衍生物。最后,将合成的吡唑衍生物2a-2m化合物再次重氮化。通过使这些重氮化的化合物与3-氨基-5-羟基-1-苯基吡唑反应,得到了新的13种杂环二偶氮染料(3a-3m)加入了染料文献和染料行业。这些新合成的化合物的结构通过元素分析和光谱方法进行表征,例如傅立叶变换红外光谱-原子吸收全反射率(FT-IR-ATR),1 H-核磁共振(1 H NMR)光谱和质谱。然后研究了在二甲基亚砜,二甲基甲酰胺,乙腈,乙酸,甲醇和氯仿中的溶剂变色性质和溶剂作用。此外,研究了有机和无机酸和碱对化合物吸收光谱的影响以及苯环键合基团的取代作用。
Synthesis and Antimicrobial Evaluation of Novel Pyrazolopyrimidines Incorporated with Mono- and Diphenylsulfonyl Groups
作者:Alsaedi、Farghaly、Shaaban
DOI:10.3390/molecules24214009
日期:——
series of pyrazolo[1,5-a]pyrimidine ring systems containing phenylsulfonyl moiety have been synthesized via the reaction of 2-(phenylsulfonyl)-1-(4-(phenylsulfonyl) phenyl)ethan-1-one, 2-benzenesulfonyl-1-(4-benzenesulfonyl-phenyl)-3-dimethylamino-propenone and 3-(dimethylamino)-1-(4-(phenylsulfonyl)phenyl)prop-2-en-1-one each with various substituted aminoazopyrazole derivatives in one pot reaction
Cyclization Reactions of 5-Aminopyrazoles with β-Ketoesters, Enamines and β-Keto Anilides: New Synthetic Routes to Pyrazolo[1,5-a]Pyrimidine Derivatives
作者:F. M. A. El-Taweel、T. M. Abu Elmaati
DOI:10.1002/jccs.200200151
日期:2002.12
The pyrazolo[1,5-a]pyrimidines 4, 10, 11 and 14 were synthesized from reaction of 4-aryazo-2,5-diaminopyrazoles 1 with cyclic β-ketoesters 2a,b or cyclic β-ketoesters 7, 8 or acetoacetanilide 12, respectively. The reaction of 1 with the enamines 15, 16 and 17 yielded also the pyrazolo[1,5-a]pyrimidines 18, 20 and 21, respectively.
Pyrazoles and Fused Pyrimidines: Synthesis, Structure Elucidation,
Antitubercular Activity and Molecular Docking Study
作者:Amerah M. Al-Soliemy、Rehab Sabour、Thoraya A. Farghaly
DOI:10.2174/1573406417666210324131951
日期:2022.2
BACKGROUND Synthesis of new heterocyclic drugs in short reaction time with sufficient quantity is considered as a target for several pharmaceutical scientists. Thus, organic reactions proceeded on the surface of nano-sized catalysts to speed up the stimulation process.
Cytotoxicity, Docking Study of New Fluorinated Fused Pyrimidine Scaffold: Thermal and Microwave Irradiation Synthesis
作者:Alaa M.A. Alnaja、Thoraya A. Farghaly、Heba S.A. El-zahabi、Mohamed R. Shaaban
DOI:10.2174/1573406416666191216120301
日期:2021.5.24
Background: Azolopyrimidines are imposed on the arena of drugs treated for cancer. The urgent need to discover new selective anticancer agents, paved the way to explore the antitumor significance of such fused systems. From the synthetic point of view, Microwave facilitated technique for synthesis is very strongly associated with green method in chemistry field. Aim: Our aim is to synthesize bioactive compounds
背景:唑并嘧啶被强加于治疗癌症的药物领域。迫切需要发现新的选择性抗癌剂,为探索这种融合系统的抗肿瘤意义铺平了道路。从合成的角度来看,微波辅助合成技术与化学领域的绿色方法密切相关。 目的:我们的目的是通过MOE程序运行的对接模拟来合成生物活性化合物,以探索目标化合物中活性最强的酶抑制剂的结合模式。 方法:除了使用常规加热外,CEM 的 MARS 系统用于微波辐射,该系统配备多模式平台,带有磁力搅拌板和转子,允许每批次并行处理多个容器。测试了所有合成的化合物对肝癌(HepG-2)、乳腺癌(MCF-7)和结肠癌(HCT-116)的抗癌活性。使用多柔比星作为参考药物进行了针对癌细胞系的筛选。对接研究是使用 MOE 软件进行的。
Synthesis, structure characterization and antimicrobial evaluation of 4-(substituted phenylazo)-3,5-diacetamido-1H-pyrazoles
作者:Selin Kinali-Demirci、Serkan Demirci、Mustafa Kurt
DOI:10.1016/j.saa.2012.12.074
日期:2013.4
article deals with the synthesis, spectral characterization and antimicrobial activity of phenylazo dyes. All of the synthesized phenylazo dyes were characterized using ATR-FTIR, FT-Raman, (1)H NMR, (13)C NMR, elemental analysis and mass spectroscopic techniques. Solvent effects on the UV-Vis absorption spectra of these phenylazo dyes were studied. Acid and base effects on the visible absorption maxima