Synthesis of thiocarbohydrazide and carbohydrazide derivatives as possible biologically active agents
作者:Kiran Gangarapu、Sarangapani Manda、Anvesh Jallapally、Sreekanth Thota、Subhas S. Karki、Jan Balzarini、Erik De Clercq、Harukuni Tokuda
DOI:10.1007/s00044-013-0684-3
日期:2014.2
AbstractA series of new β-isatin aldehyde-N,N′-thiocarbohydrazone, bis-β-isatin thiocarbohydrazones, bis-β-isatin carbohydrazones was synthesized by condensation of 5-substituted isatin with thiocarbohydrazide or carbohydrazide. The chemical structures of the newly synthesized compounds were confirmed by FT-IR, 1H NMR, and mass spectral analysis. The synthesized compounds were evaluated for in vitro antiviral
摘要5-取代靛红与硫代卡巴肼或碳酰肼缩合合成了一系列新的β-靛红醛-N、N′-硫代羰腙、双-β-靛红硫代羰腙、双-β-靛红羰腙。新合成化合物的化学结构经FT-IR、1 H NMR和质谱分析证实。评估了合成的化合物对各种 DNA 和 RNA 病毒株的体外抗病毒活性,但与参考化合物相比显示出中等的抗病毒活性。在所有化合物中,6c在两阶段小鼠皮肤致癌试验中表现出最高的化学预防活性。 图形概要
Iron(III), copper(II), cadmium(II), and mercury(II) complexes of isatin carbohydrazone Schiff base ligand (H
<sub>3</sub>
L): Synthesis, characterization, X‐ray diffraction, cyclic voltammetry, fluorescence, density functional theory, biological activity, and molecular docking studies
作者:Adel M. Younis、Mohammed M. El‐Gamil、Tawfik H. Rakha、Gaber M. Abu El‐Reash
DOI:10.1002/aoc.6250
日期:2021.7
of the H3L ligand and its metalcomplexes were optimized using the DMol3 tool in the material studio package. The ligand behaves as binegative N2O3 pentadentate in [Fe(HL)(Cl)]·2H2O complex, mononegative N2O3 pentadentate in [Cu(H2L)(OAc)]·2H2O complex, mononegative N2O tridentate in [Cd(H2L)2]·H2O complex, and finally, neutral N2 bidentate in [Hg(H3L)(Cl)2]·2H2O complex. Coats–Redfern and Horowitz–Metzger
一系列过渡金属 Fe(III)、Cu(II)、Cd(II) 和 Hg(II),与N ',2-bis(( Z )-2-oxoindolin-3-ylidene)hydrazine络合物-1 碳酰肼 (H 3 L) 配体已被合成,并基于其光谱分析(傅立叶变换红外 [FT-IR]、1 H 核磁共振 (NMR) 和13 C NMR、UV-可见光)阐明了它们的结构。UV-Vis)、电子自旋共振 (ESR)、粉末 X 射线衍射 [XRD] 和质谱)、元素分析、电导和磁化率测量。使用 DMol 3优化了 H 3 L 配体及其金属配合物的结构材料工作室包中的工具。配位体表现为binegativeñ 2 ö 3五齿中的[Fe(HL)(CL)]·2H 2 O复合,mononegativeÑ 2 ö 3五齿在[铜(H 2 L)(OAC)]·2H 2 O复合,[Cd(H 2 L) 2 ]·H 2 O 复合物中的单负
Microwave Assisted Synthesis, Characterization of Some New Isatin and Thiophene Derivatives as Cytotoxic and Chemopreventive Agents
作者:Kiran Gangarapu、Sarangapani Manda、Sreekanth Thota、Rajeshwar Yerra、Subhas S. Karki、Jan Balzarini、Erik De Clercq、Harukuni Tokuda
DOI:10.2174/157018012804586950
日期:2012.12.1
In obtaining some new cytotoxic and chemopreventive agents with potent antiproliferative activity against cancer cells, a series of new beta-isatin aldehyde-N,N'-thiocarbohydrazone, bis-beta-isatin thiocarbohydrazones, bis-beta-isatin carbohydrazones, N,2-bis(thiophen-2-ylmethylidene) thiocarbohydrazone and N,2-bis(thiophen-2-ylmethylidene) carbohydrazone derivatives was synthesized by microwave oriented reaction and evaluated for their in vitro cytotoxic activity. The newly synthesized compounds were characterized based on spectral (FT-IR, NMR, MS) analyses. The inhibitory effects of synthesized compounds on the proliferation of murine leukemia cells (L1210), human T-lymphocyte cells (CEM) and human cervix carcinoma cells (HeLa) were assayed by using MTT assay. The compounds were also tested for their inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) activation induced by 12-O-tetradecanoylphorbol-13-acetate (TPA). In vitro evaluation of these schiff bases revealed mild to moderate cytotoxic activity in a dose dependent manner. The results of the in vitro inhibitory activities of synthetic compounds against EBV-EA activation with IC50 ranges from 485-535 (mol ratio/32pmol/TPA). Chlorine group containing derivatives did not show increased inhibitory activity against tumor promoter TPA induction. Sulphur containing derivatives also did not show a high inhibitory potency in this system.
El-Reash, G. M. Abu; Ibrahim, K. M.; Taha, F. I., Bulletin de la Societe Chimique de France, 1991, # 6, p. 846 - 849
作者:El-Reash, G. M. Abu、Ibrahim, K. M.、Taha, F. I.、Feteih, N. A.
DOI:——
日期:——
Spectroscopic and theoretical studies on some carbohydrazone complexes and evaluation of their biological potency, catalytic, and ionophore activities
作者:Adel M. Younis、Tawfik H. Rakha、Mohammed M. El-Gamil、Gaber M. Abu El-Reash
DOI:10.1016/j.molstruc.2021.131110
日期:2021.12
photovoltaic features of the complexes. ESR spectrum of Cu2+ complex pointed out the existence of the last electron in dz2 ground orbital verifying its distorted (compressed) octahedral structure. A study of electrochemical behavior for Co2+ ions in the presence and absence of the ligand reinforced the successful condensation between Co2+ ions and the ligand. Pd2+ complex was investigated for its action