54401-45-5Relevant academic research and scientific papers
α-Glucosidase inhibition activity and in silico study of 2-(benzo[d][1,3]dioxol-5-yl)-4H-chromen-4-one, a synthetic derivative of flavone
Meena, Surya N.,kumar, Ujjwal,Naik, Mayuri M.,Ghadi, Sanjeev C.,Tilve, Santosh G.
, p. 2340 - 2344 (2019)
A synthetic flavone derivative 2-(benzo[d][1,3]dioxol-5-yl)-4H-chromen-4-one (BDC) was synthesized by the one pot reaction method and assessed for α-glucosidase inhibitory activity. The BDC demonstrated dose dependent inhibition of α-glucosidase activity. A maximum inhibition (99.3 ± 0.26%) of α-glucosidase was observed at 27.6 μM. The maximum α-glucosidase inhibitory activity depicted by BDC 27.6 μM concentration was 22.4 fold over the maximum inhibition observed with acarbose (97.72 ± 0.59% at 669.57 μM), a standard commercial anti-diabetic drug. In contrast to acarbose that depicted competitive type inhibition, kinetic studies of α-glucosidase inhibition by BDC demonstrated non-competitive inhibition with Km of 0.71 mM?1 and a Vmax of 0.028 mmol/min. In silico studies suggest allosteric interaction of BDC with α-glucosidase at a minimum binding energy (ΔG) of ?8.64 kcal/mol and Ki of 465.3 nM, whereas, acarbose interacted at the active site of α-glucosidase with ΔG of ?9.23 kcal/mol and Ki of 172 nM. Thus BDC significantly inhibited α-glucosidase in comparison to acarbose. Moreover, BDC has been endorsed for drug likeness by evaluating it as per Lipinski rule of five. Thus, BDC can be a lead compound for the management of type-2 diabetes mellitus.
A novel one-pot synthesis of flavones
Chang, Meng-Yang,Tsai, Min-Chen,Lin, Chun-Yi
, p. 11655 - 11662 (2021/03/31)
In this paper, a one-pot facile route for the BiCl3/RuCl3-mediated synthesis of functionalized flavones is described, including: (i) intermolecularortho-acylation of substituted phenols with cinnamoyl chlorides, and (ii) intramolecular cyclodehydrogenation of the resultingo-hydroxychalcones. The reaction conditions are discussed herein.
Novel and Efficient Access to Flavones under Mild Conditions: Aqueous HI-Mediated Cascade Cyclization/Oxidative Radical Reaction of 2-Propynolphenols
Song, Xian-Rong,Li, Ren,Yang, Tao,Chen, Xi,Ding, Haixin,Xiao, Qiang,Liang, Yong-Min
supporting information, p. 5548 - 5552 (2018/10/24)
Herein we disclose a metal-free and efficient method for the direct conversion of 2-propynolphenols to biologically important flavones using aqueous HI as the promoter. This transformation was proved via 4-iodo-2H-chromenes intermediate, which was simultaneously conversed to corresponding flavones by a Csp2?I bond cleavage and a C–O bond formation under air.
An efficient oxidative conversion of 2-aryl-2H-chromenes to the corresponding flavones by tert-butylhydroperoxide and copper bromide
Banerjee, Dipanwita,Kayal, Utpal,Maiti, Gourhari
supporting information, p. 1667 - 1671 (2016/04/04)
A simple and efficient method has been developed for the facile oxidation of chromenes to the corresponding flavones by tert-butylhydroperoxide (TBHP) in the presence of copper(II) bromide catalyst in toluene at 80 °C in a very short time. The reaction demonstrates excellent reactivity, functional group tolerance, and good to excellent yields without using conventional strong oxidizing agents.
Scaffold-hopping of bioactive flavonoids: Discovery of aryl-pyridopyrimidinones as potent anticancer agents that inhibit catalytic role of topoisomerase IIα
Priyadarshani, Garima,Amrutkar, Suyog,Nayak, Anmada,Banerjee, Uttam C.,Kundu, Chanakya N.,Guchhait, Sankar K.
, p. 43 - 54 (2016/07/06)
A strategy of scaffold-hopping of bioactive natural products, flavones and isoflavones, leading to target-based discovery of potent anticancer agents has been reported for the first time. Scaffold-hopped flavones, 2-aryl-4H-pyrido[1,2-a]pyrimidin-4-ones and the scaffold-hopped isoflavones, 3-aryl-pyrido[1,2-a]pyrimidin-4-ones were synthesized via Pd-catalyzed activation–arylation methods. Most of the compounds were found to exhibit pronounced human topoisomerase IIα (hTopoIIα) inhibitory activities and several compounds were found to be more potent than etoposide (a hTopoIIα-inhibiting anticancer drug). These classes of compounds were found to be hTopoIIα-selective catalytic inhibitors while not interfering with topoisomerase I and interacted with DNA plausibly in groove domain. Cytotoxicities against various cancer cells, low toxicity in normal cells, and apoptotic effects were observed. Interestingly, compared to parent flavones/isoflavones, their scaffold-hopped analogs bearing alike functionalities showed significant/enhanced hTopoIIα-inhibitory and cytotoxic properties, indicating the importance of a natural product-based scaffold-hopping strategy in the drug discovery.
Pyrrolidine and iodine catalyzed domino aldol-Michael-dehydrogenative synthesis of flavones
Naik, Mayuri M.,Tilve, Santosh G.,Kamat, Vijayendra P.
, p. 3340 - 3343 (2014/06/09)
A one pot synthesis of flavones is established from 2′- hydroxyacetophenones and substituted aromatic aldehydes. The method uses domino aldol-Michael-oxidation reaction catalyzed by pyrrolidine as a base and iodine as an oxidant in dimethyl sulfoxide.
Sodium perborate tetrahydrate-mediated transformations of 2′-hydroxychalcones to flavanones, flavones, and 3′, 5′-diiodoflavone under mild, environmentally friendly conditions
Ganguly, Nemai C.,Chandra, Sumanta,Barik, Sujoy Kumar
, p. 1351 - 1361 (2013/05/09)
Sodium perborate tetrahydrate has been utilized as a nucleophilic catalyst for facile conversion of 2′-hydroxychalcones to flavanones in warm aqueous acetonitrile, and then these chalcones, upon oxidative cyclization in warm acetic acid with an excess of the same reagent, afforded flavones in acceptable yields. One-pot synthesis of 3′,5′-diiodoflavone has been accomplished by diacetoxyiodobenzene-catalyzed iodination of 2′-hydroxychalcone with tetra-n-butylammonium iodide in acetic acid in the presence of sodium perborate as a terminal oxidant.
Palladium-catalyzed carbonylation reaction of aryl bromides with 2-hydroxyacetophenones to form flavones
Wu, Xiao-Feng,Neumann, Helfried,Beller, Matthias
supporting information, p. 12595 - 12598 (2012/11/07)
Flavone of the month: A general and efficient method for the palladium-catalyzed carbonylative synthesis of flavones has been developed (see scheme). Starting from aryl bromides and 2-hydroxyacetophenones, the corresponding flavones have been isolated in good yields. Copyright
Lewis acid-triggered selective zincation of chromones, quinolones, and thiochromones: Application to the preparation of natural flavones and isoflavones
Klier, Lydia,Bresser, Tomke,Nigst, Tobias A.,Karaghiosoff, Konstantin,Knochel, Paul
supporting information; experimental part, p. 13584 - 13587 (2012/10/08)
A Lewis acid-triggered zincation allows the regioselective metalation of various chromones and quinolones. In the absence of MgCl2, a C(3) zincation is observed, whereas in the presence of MgCl2 or a related Lewis acid, C(2) zincation occurs. Applications to a natural flavone, isoflavone, and quinolone are shown.
Oxidative rearrangements of 2'-hydroxychalcones with lh-l-hydroxy-5-methyl- l,2,3-benziodoxathiole 3,3-dioxide
Justik, Michael W.,Zimmerman, Alyssa K.
scheme or table, p. 67 - 71 (2010/03/03)
1H-l-hydroxy-5-methyl-l,2,3-benziodoxathiole 3,3-dioxide (HMBI) has been found to effect the direct conversion of 2'-hydroxychalcones with various B-ring substituents to isoflavones in moderate to good yield (34-83%) in methanol under reflux. The reduced byproduct of HMBI is easily recovered by aqueous extraction and can be recycled and reused with high efficiency. Previous reports of conversions of this type required the use of toxic thallium(III) salts or initial protection of the 2'-hydroxyl group.
