An efficient and green synthesis of polyfunctionalized spirothiazolidin-4-ones using sulfonated mesoporous silica as a reusable catalyst
作者:Essam M. Hussein、Saleh A. Ahmed
DOI:10.1007/s10593-017-2185-7
日期:2017.10
A simple and highlyefficient protocol was developed for one-pot synthesis of polyfunctionalized spirothiazolidin-4-ones using sulfonated mesoporous silica (MCM-SO3H) as a heterogenous and reusable acidic catalyst. In comparison to the reported synthetic methods for the synthesis of thiazolidin-4-one and spirothiazolidin-4-one derivatives, this strategy provides superior yields under mild conditions
Synthesis of novel isatin-thiazoline and isatin-benzimidazole conjugates as anti-breast cancer agents
作者:Azza T. Taher、Nadia A. Khalil、Eman M. Ahmed
DOI:10.1007/s12272-011-1005-3
日期:2011.10
A series of new isatin-thiazoline 3a–h and isatin-benzimidazole 4a–h derivatives were synthesized via condensation of isatin Mannich bases 2a–h with either 2-aminothiazoline or 2-aminobenzimidazole. The structures of the newly synthesized compounds were characterized by spectral data. The anti-breast cancer activity of some of the synthesized compounds was assessed in the MCF-7 human breast cancer cell line. The results showed that compounds 4b, 4d and 4g possess significant antiproliferative activity against MCF-7 cells.
Versatile three-component synthesis of 2′-amino-1,2-dihydrospiro[(3H)-indole-3,4′-(4′H)-pyran]-2-ones
作者:V. Yu. Mortikov、Yu. M. Litvinov、A. A. Shestopalov、L. A. Rodinovskaya、A. M. Shestopalov
DOI:10.1007/s11172-008-0338-7
日期:2008.11
2-dihydrospiro[(3H)-indole-3,4′-(4′H)-pyran]-2-ones has been suggested consisting in the three-component reaction of isatins, cyanoaceticacid derivatives, and α-methylenecarbonyl compounds (β-dicarbonyl compounds, activated phenols, and OH-substituted heterocycles) in ethanol in the presence of triethylamine as a catalyst. The reaction proceeds selectively to form spiro[(3H)-indole-3,4′-(4′H)-pyrans].
Synthesis and molecular modeling studies of indole-based antitumor agents
作者:Riham F. George、Siva S. Panda、El-Sayed M. Shalaby、Aladdin M. Srour、I. S. Ahmed Farag、Adel S. Girgis
DOI:10.1039/c6ra07061b
日期:——
3-dipolar cycloaddition reaction of 1-alkyl-3,5-bis(arylidene)-4-piperidones 11–25 with azomethine ylides (generated by the condensation of isatins 26–28 with sarcosine 29). The single crystal X-ray studies of 46 and 48 supported the regio- and stereoselectivity of the reaction. Most of the synthesized spiro-indoles exhibited potent antitumor properties against the HeLa (cervical cancer) cell line through
Synthesis and antioxidant activity of 2-indolinone bis(Mannich bases) and related compounds
作者:Elsayed M. Afsah、Ahmad A. Fadda、Mohamed M. Hammouda
DOI:10.1007/s00706-016-1715-9
日期:2016.11
3-di(2-oxoindolin-3-ylidene)acetone were synthesized and used as a key intermediate in the synthesis of new 2-indolinone derivatives. All the synthesized compounds were characterized by IR, 1H NMR, 13C NMR, mass spectra, and elemental analysis. The synthesized compounds were tested for their antioxidant activity in vitro using ABTS and bleomycin-dependent DNA damage assays. Graphical abstract
摘要曼尼希碱由于其作为合成中间体的反应性和广泛的生物活性而吸引了化学家和生物学家的兴趣。基于曼尼希碱的强效抗氧化剂,细胞毒性和其他生物学特性,有强烈的动机继续合成含有2-indolinone核心的新型曼尼希碱。在本研究中3-(苯乙叉基)-1-(哌啶-1-基甲基)吲哚-2-酮,3-(2-氧代-2-苯基亚乙基)吲哚-2-酮和1,3-二(2合成了2-氧吲哚啉-3-亚丙基)丙酮,并将其用作合成新的2-吲哚酮衍生物的关键中间体。所有合成的化合物均通过IR,1 H NMR,13表征13 C NMR,质谱和元素分析。使用ABTS和博来霉素依赖性DNA损伤测定法在体外测试了合成的化合物的抗氧化活性。 图形概要