100 μM. The 3D-QSAR model (encompassing 4 PLS factors), featuring acceptable predictive statistics either in the training set (n = 45, q2 = 0.596) and in the external test set (n = 14, r2ext = 0.695), usefully complemented the pharmacophoremodel by identifying the physicochemical features mainly correlated with the Aβ anti-aggregating potency of the indole and isatin derivatives studied herein.
合成并分析了 36 种新型含吲哚化合物,主要是 3-(2-苯基亚肼基)靛红和结构相关的 1H-吲哚-3-甲醛衍生物,作为 β 淀粉样蛋白 (Aβ) 聚集的抑制剂,Aβ 聚集是阿尔茨海默病的病理生理学标志疾病。新合成的分子的 IC50 值从亚微摩尔到两位数微摩尔范围,提供了结构-活性关系的更多信息。一些新化合物通过抑制单胺氧化酶 A 和 B 表现出令人感兴趣的多靶点活性。在 tau 过度表达的细菌细胞中进行的基于细胞的测定揭示了一些衍生物对 tau 聚集的有前景的额外活性。大约九十个已发表的分子和三十六个新合成的分子的累积数据被用来生成抗淀粉样蛋白生成活性的药效团假说,该假说具有多种功效,令人满意地将“活性”化合物与“非活性”(活性差)化合物区分开来。还针对约 80% 的“活性”化合物(即那些实现低于 100 μM 的有限 IC50 值的化合物)导出了基于原子的 3D-QSAR 模型。 3D-QSAR
Lewis acid-promoted direct synthesis of N-unsubstituted hydrazones via the reaction of hydrazine with acetophenone and isatin derivatives
作者:A. S. El-Azab、H. A. Ghabbour、W. M. El-Husseiny、A. R. Maarouf、M. A. Mohamed、A. A.-M. Abdel-Aziz
DOI:10.1134/s1070363216120471
日期:2016.12
Hydrazones 2–22 were synthesized via the reaction of acetophenone with isatin derivatives and anhydrous hydrazine promoted by BF3 as a Lewis acid at 0°C. Structures of the synthesized hydrazones were determined on the basis of NMR and X-ray crystallographic analyses.
Synthesis and anti‐inflammatory activity of diversified heterocyclic systems
作者:Ahmed Bari、Daniel Grenier、Jabrane Azelmat、Saeed Ali Syed、Abdulrahman M. Al‐Obaid、Eric C. Hosten
DOI:10.1111/cbdd.13576
日期:2019.10
In continuation with our research program on the development of novel bioactive molecules, we report herein the design and synthesis of a series of diversified heterocycles (4-22). The synthesized compounds were evaluated for their anti-inflammatoryactivity. The chemical structures of the newly synthesized compounds have been confirmed by NMR, FTIR, and microanalysis.
New method for the preparation of 3-diazo-1,3-dihydroindol-2-ones
作者:V. M. Muzalevskiy、E. S. Balenkova、A. V. Shastin、A. M. Magerramov、N. G. Shikhaliev、V. G. Nenajdenko
DOI:10.1007/s11172-011-0359-5
日期:2011.11
A new method for the preparation of diazo compounds of 2-indolinone series by oxidation of isatin hydrazones with polyhaloalkanes in the presence of copper salts in catalytic amounts was developed.