Heterocyclization of compounds containing diazo and cyano groups. 6. Theoretical and experimental investigations of cyclization of 2-cyano-2-diazoacetamides to 5-hydroxy-1,2,3-triazole-4-carbonitriles
α-Cyanocinnamide derivatives: a new family of non-peptide, non-sulfhydryl inhibitors of ras farnesylation
摘要:
Farnesylation of Ras and other proteins is required for their membrane attachment and normal function. Here we report on the synthesis of alpha-cyanocinnamide derivatives, a new family of farnesyltransferase inhibitors. These compounds are nonpeptidic and do not contain sulfhydryl groups. The most potent compound is a pure competitive inhibitor with respect to the Ras protein and mixed competitive with respect to farnesyl diphosphate. Selectivity studies against geranylgeranyltransferase and biological activities of selected compounds are described. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Synthesis, cytotoxic characterization, and SAR study of imidazo[1,2-<i>b</i>
]pyrazole-7-carboxamides
作者:András Demjén、Róbert Alföldi、Anikó Angyal、Márió Gyuris、László Hackler、Gábor J. Szebeni、János Wölfling、László G. Puskás、Iván Kanizsai
DOI:10.1002/ardp.201800062
日期:2018.7
The synthesis and in vitro cytotoxic characteristics of new imidazo[1,2‐b]pyrazole‐7‐carboxamides were investigated. Following a hit‐to‐lead optimization exploiting 2D and 3D cultures of MCF‐7 human breast, 4T1 mammary gland, and HL‐60 human promyelocytic leukemia cancer cell lines, a 67‐membered library was constructed and the structure–activity relationship (SAR) was determined. Seven synthesized
Synthesis of novel antioxidant and antitumor 5-aminopyrazole derivatives, 2D/3D QSAR, and molecular docking
作者:Ahmed Fekri、Eman M. Keshk、Abdel-Galil M. Khalil、Israa Taha
DOI:10.1007/s11030-021-10184-9
日期:2022.4
and phthalimide derivatives. In this study, we structurally characterized novel pyrazole derivatives by spectral IR, 1H and 13C NMR, and MASS spectroscopy. We also evaluatedantioxidantactivity of various derivatives using ABTS and DPPH methods and cytotoxicity in the hepatocellular carcinoma Hep-G2 cells by SRB assay. The most potent antitumor molecules were 5-aminopyrazole derivative 3, chloroacetanilide
5-氨基吡唑是几种具有生物活性的吡唑并嗪的重要前体,包括吡唑并吡啶、吡唑并嘧啶和吡唑并三嗪,以及席夫碱、硫脲和邻苯二甲酰亚胺衍生物。在这项研究中,我们通过光谱 IR、 1 H 和13 C NMR 以及 MASS 光谱对新型吡唑衍生物进行了结构表征。我们还使用 ABTS 和 DPPH 方法评估了各种衍生物的抗氧化活性,并通过 SRB 测定评估了肝细胞癌 Hep-G2 细胞中的细胞毒性。最有效的抗肿瘤分子是 5-氨基吡唑衍生物3、氯乙酰苯胺衍生物8、马来酰亚胺衍生物10a、吡唑并嘧啶16和烯胺如图19所示,IC 50值分别为41、3.6、37、24.4和17.7μM。补充计算研究预测了这些分子的 QSAR 和生物活性。有趣的是,最有效的化合物也被预测为激酶抑制剂。此外,与肝脏受体(3MBG、4XCU 和 4G9C)的分子对接预测了有希望的相互作用。 图形摘要
Anion Cascade Reactions II: Synthesis of 3-Isoquinuclidone-Based Bridged Polycyclic Lactams
A facile and convenient anion cascade strategy was developed for the synthesis of bridged-ring amides in moderate to excellent yields in one step in the presence of tBuOK in EtOH undermildconditions, starting from various cheap and commercially available 2-cyanoacetamides and precisely designed straight-chain and annular 1,4-dienones. This simple protocol was generally applicable to a wide range
Palladium‐Catalyzed Direct Carbonylation of Bromoacetonitrile to Synthesize 2‐Cyano‐
<i>N</i>
‐acetamide and 2‐Cyanoacetate Compounds
作者:Zhi‐Peng Bao、Xiao‐Feng Wu
DOI:10.1002/anie.202301671
日期:——
A new and convenientpalladium-catalyzed carbonylative procedure of bromoacetonitrile has been developed. A variety of valuable 2-cyano-N-acetamide and 2-cyanoacetate compounds were obtained in good to excellent yields under mild reaction conditions. Furthermore, this transformation can be carried out under atmospheric pressure and provides an alternative route to 7 drug compounds.
Evaluation of the anti-proliferative activity of 2-oxo-pyridine and 1′<i>H</i>-spiro-pyridine derivatives as a new class of EGFR<sup>Wt</sup>and VEGFR-2 inhibitors with apoptotic inducers
作者:Reham R. Raslan、Yousry A. Ammar、Sawsan A. Fouad、Sadia A. Hessein、Nadia A. M. Shmiess、Ahmed Ragab
DOI:10.1039/d3ra00887h
日期:——
Developing new agents for cancer treatment remains a top priority because it is one of the deadliest worldwide. A new series of 2-oxo-pyridine and 1'H-spiro-pyridine derivatives were designed and synthesized based on an N-(ethyl benzoate) moiety. The structure of the designed derivatives was confirmed by different spectroscopic techniques (FT-IR and NMR) and elemental analysis and then evaluated as