InCl3 mediated one-pot synthesis of indol-3-yl pyridine and 2,2′-bipyridine derivatives through multi-component reaction
作者:Prakasam Thirumurugan、Paramasivan T. Perumal
DOI:10.1016/j.tet.2009.06.097
日期:2009.9
6-methoxy-4-aryl-2,2′-bipyridine-5-carbonitrile derivatives has been achieved throughone-potmulti-componentreaction under reflux condition. Particularly valuable features of this method include high yields of products in short reaction time and broad substrate scope. It is an efficient and promising synthetic strategy to build indol-3-ylpyridine and 2,2′-bipyridine skeletons.
Multicomponent reactions for the synthesis of new 3′-indolyl substituted heterocycles under microwave irradiation
作者:Song-Lei Zhu、Shun-Jun Ji、Kai Zhao、Yu Liu
DOI:10.1016/j.tetlet.2008.02.101
日期:2008.4
(3′-indolyl)benzo[h]quinoline derivatives were synthesized via one-pot multicomponent reactions of aldehydes, 3-cyanoacetyl indoles with 5-aminopyrazol or naphthylamine undermicrowaveirradiation. Particularly valuable features of this method include high yields of products, broad substrate scope, short reaction time and straightforward procedure.
通过醛,3-氰基乙酰基吲哚与5-甲基苯的一锅多组分反应,合成了一系列多取代的(3'-吲哚基)吡唑并[3,4- b ]吡啶和(3'-吲哚基)苯并[ h ]喹啉衍生物。微波辐射下的氨基吡唑或萘胺。该方法特别有价值的特征包括高产量的产品,广泛的底物范围,较短的反应时间和简单的操作步骤。
Regioselective Three-Component Synthesis of Indolylpyrazolo[3,4- b]pyridines Induced by Microwave and under Solvent-Free Conditions
New 4-(1H-indol-3-yl)-6-arylpyrazolo[3,4-b]pyridines 7 have been prepared in a solvent-free three-component reaction induced by microwave from 5-aminopyrazole 1, benzaldehydes 2 and 3-indolyl-3-oxopropanenitrile 5. These compounds were also obtained by means of the reaction of aminopyrazole 1 with benzylidene-derivatives of 3-(1H-indol- 3-yl)-3-oxopropanenitrile 6, prepared in the reaction of 3-(1H-indol-3-yl)-3-oxopropanenitrile and aldehydes.
Domino reactions in water: diastereoselective synthesis of densely functionalized indolyldihydrofuran derivatives
作者:Pethaiah Gunasekaran、Kamaraj Balamurugan、Sathiyamoorthi Sivakumar、Subbu Perumal、J. Carlos Menéndez、Abdulrahman I. Almansour
DOI:10.1039/c2gc16517a
日期:——
A library of trans-5-aroyl-2-(indol-3-yl)-4-aryl-4,5-dihydrofuran-3-carbonitriles was diastereoselectively synthesized in excellent yields from the reaction of 2-(3-indolylcarbonyl)-3-aryl-2-propenenitriles with (2-aryl-2-oxoethyl)pyridinium bromides in the presence of triethylamine via a simple, user-friendly domino process carried out in water. Extraction and chromatographic steps were avoided, since the final products could be simply filtered from the aqueous reaction medium and recrystallized. This one-pot transformation generates one C–C and one C–O bond and presumably proceeds by a domino sequence involving the generation of a pyridinium ylide, a Michael addition and a final annulation via intramolecular nucleophilic substitution.
One of the most prevailing metabolic disorder diabetes mellitus has become the global health issue that has to be addressed and cured. Different marketed drugs have been made available for the treatment of diabetes but there is still a need of introducing new therapeutic agents that are economical and have lesser or no side effects. The current study deals with the synthesis of indole acrylonitriles (3-23) and the evaluation of these compounds for their potential for alpha-glucosidase inhibition. The structures of these synthetic molecules were deduced by using different spectroscopic techniques. Acarbose (IC50 = 2.91 +/- 0.02 mu M) was used as standard in this study and the synthetic molecules (3-23) have shown promising alpha-glucosidase inhibitory activity. Compounds 4, 8, 10, 11, 14, 18, and 21 displayed superior inhibition of alpha-glucosidase enzyme in the range of (IC50 = 0.53 +/- 0.01-1.36 +/- 0.04 mu M) as compared to the standard acarbose. Compound 10 (IC50 = 0.53 +/- 0.01 mu M) was the most effective inhibitor of this library and displayed many folds enhanced activity in contrast to the standard. Molecular docking of synthetic compounds was performed to verify the binding interactions of ligand with the active site of enzyme. This study had identified a number of potential alpha-glucosidase inhibitors that can be used for further research to identify a potent therapeutic agent against diabetes.