4613-53-0

Usage

InChI:InChI=1/C15H11NO2/c16-11-6-7-14-12(8-11)13(17)9-15(18-14)10-4-2-1-3-5-10/h1-9H,16H2

Upstream product

• 36773-22-5 1-phenyl-3-(2'-hydroxy-5'-acetamidophenyl)-1,3-propanedione 
• 123-30-8 4-amino-phenol 
• 2623-33-8 4-acetoxyacetanilide 
• 4010-28-0 5'-bromo-2'-benzoyloxy-acetophenone 
• 1450-75-5 5-Bromo-2-hydroxyacetophenone 
• 98-88-4 benzoyl chloride 
• 50-80-6 5-amino-2-hydroxyacetophenone 
• 100-52-7 benzaldehyde 
• 51-66-1 4-methoxyacetanilide 
• 104-94-9 4-methoxy-aniline 
• 52923-34-9 N-[4-hydroxy-3-[(E)-3-phenylprop-2-enoyl]phenyl]acetamide 
• 1218-80-0 6-bromoflavone 
• 103-90-2 4-acetaminophenol 
• 24449-58-9 5′-acetamino-2′-hydroxychalcone 

Downstream Products

• 4631-18-9 6-diacetylamino-2-phenyl-chromen-4-one 
• 1422722-54-0 4-benzylidene-1-(4-oxo-2-phenyl-4H-chromen-6-yl)-2-phenyl-1H-imidazol-5-one 
• 1422722-55-1 4-(4-methoxybenzylidene)-1-(4-oxo-2-phenyl-4H-chromen-6-yl)-2-phenyl-1H-imidazol-5-one 
• 1422722-56-2 4-(3,4-dichlorobenzylidene)-1-(4-oxo-2-phenyl-4H-chromen-6-yl)-2-phenyl-1H-imidazol-5-one 
• 1422722-57-3 4-(3,4-dimethoxybenzylidene)-1-(4-oxo-2-phenyl-4H-chromen-6-yl)-2-phenyl-1H-imidazol-5-one 
• 1422722-58-4 4-(4-hydroxybenzylidene)-1-(4-oxo-2-phenyl-4Hchromen-6-yl)-2-phenyl-1H-imidazol-5-one 

Relevant academic research and scientific papers

N-Benzylation of 6-aminoflavone by reductive amination and efficient access to some novel anticancer agents via topoisomerase II inhibition

Series of novel N-benzyl derivatives of 6-aminoflavone (9a–n) were synthesized and evaluated for anticancer and topoisomerase II enzyme inhibition activity. All the synthesized compounds were screened for in vitro anticancer activity against human breast cancer cell line (MCF-7) and human lung cancer cell line (A-549). Among the synthesized compounds, 9f and 9g were found to be the most potent anticancer agents against human breast cancer cell line (MCF-7) with IC50 values of 9.35?μM and 9.58?μM, respectively. Compounds 9b, 9c and 9n exhibited promising anticancer activity against human lung cancer cell line (A-549) with 43.71%, 46.48% and 44.26% inhibition at the highest concentration of 10?μM, respectively. Compounds 9c, 9f and 9g have ability to inhibit the topoisomerase II enzyme. Compound 9f showed most potent topoisomerase II enzyme inhibition activity with IC50 value of 12.11?μM. Further, these compounds have a high potential to be developed as a promising topoisomerase II inhibitors.

Rational design for multicolor flavone-based fluorophores with aggregation-induced emission enhancement characteristics and applications in mitochondria-imaging

Fluorophores with aggregation-induced emission enhancement (AIEE) properties have attracted more attention in recent years. In order to realise more valuable applications, the different kinds of AIEE molecules are in serious need of further development. Therefore, a novel flavone-based AIEE system derived from restriction of intramolecular rotation (RIR) was designed and synthesized in this work. The results revealed that six of the compounds showed typical AIEE characteristics, with fluorescence emissions from purple, blue, cyan to green, tunable by changing substituent groups. This flavone-based AIEE system has never been reported before. The AIEE characteristics were investigated by optical spectroscopy, fluorescence photographs, scanning electron microscopy (SEM), fluorescence quantum yields (φF) and fluorescence lifetime in the CH3OH/H2O mixed solution. Moreover, benefiting from the simple structures and small molecular weight, they could permeate cells faster than current high-molecular-weight AIEE molecules. Furthermore, to examine possible biomedical applications, fluorescence imaging in living A549 lung cells and cell viabilities were examined, and the results displayed that these fluorophores showed good cellular uptake and low cytotoxicity within the experimental concentration range. In addition, these AIEE compounds possessed excellent specificity for mitochondrial targeting and mitochondrial morphological change tracking, besides, they displayed superior photostability, which indicated they are potential candidates for mitochondrial imaging.

Synthesis and antiproliferative activity of new 1,2,3-triazole/flavone hybrid heterocycles against human cancer cell lines

A series of new 1,2,3-triazole/flavone hybrid heterocycles were synthesized from 6-amino flavone via key intermediate N-propargyl flavone 6 by adopting the Sharpless Click reaction. Copper(I) catalyzed 1,3-dipolar cycloaddition reaction that gave products in high yields. All the synthesized compounds were screened for their in vitro antiproliferative activity against four human cancer cell lines, HeLa (cervical cancer cell line), MIA PaCa (pancreatic cancer cell line), MDA-MB-231 (breast cancer cell line), and IMR 32 (neuroblastoma cancer cell line). Compounds 7a, 7b, 7d, 7g (GI50 = 0.01–0.68 μM) demonstrated promising antiproliferative activity.

Method for synthesizing flavonoids compound in one step by virtue of catalysis of 1,3-dialkylimidazolium oxometallate

The invention discloses a method for synthesizing a flavonoids compound in one step by virtue of catalysis of 1,3-dialkylimidazolium oxometallate. The method is characterized by comprising the following steps: sequentially adding raw material benzaldehyde or benzaldehyde derivatives, raw material 2-hydroxyacetophenone or 2-hydroxyacetophenone derivatives, an ion liquid catalyst and an organic solvent into a reactor, stirring, heating to 50 to 90 DEG C, reacting for 2 to 7 hours at a constant temperature by taking oxygen or air as an oxidant, cooling, distilling under reduced pressure, carrying out the column chromatography, and re-crystallizing and separating to obtain the target product flavonoids compound. The method has the characteristics that the ion liquid is used as the catalyst, the yield of the flavonoids compound synthesized in one step reaches 85 percent or more, therefore, compared with the traditional synthetic method, the reaction flow is shortened, and the synthetic efficiency of the flavonoids compound is remarkably improved. The method has advantages of high product yield, low production cost, simple operation procedures, moderate reaction conditions and the like and is proved to be a novel method for high-efficiently synthesizing the flavonoids compound.

COMPOUNDS FOR THE TREATMENT OF AMYLOID-ASSOCIATED DISEASES

This invention provides novel compounds of formulae (I) or (II) or a stereoisomer, enantiomer, racemic, or tautomer thereof, (I) (II) wherein the substituents are as defined in the specification. The present invention also relates to the novel compounds for use as a medicine, more in particular for the prevention or treatment of amyloid-related diseases, more specifically certain neurological disorders, such as disorders collectively known as tauopathies, disorders characterized by cytotoxic α-synuclein amyloidogenesis. The present invention also relates to the use of said novel compounds for the manufacture of medicaments useful for treating such amyloid-related diseases. The present invention further relates to pharmaceutical compositions including said novel compounds and to methods for the preparation of said novel compounds.

Synthesis and anti-cancer activity of novel thiazolidinone analogs of 6-aminoflavone

Novel heterocyclic analogs were synthesized by combining a flavone nucleus and thiazolidinone ring in an effort to potentiate the existing anti-cancer activity of flavone. The syntheses of 6-aminoflavone, 6-amino-3-methoxyflavone, 6-amino-3-methoxy-3',4'-dimethxyflavone and their corresponding thiazolidinone analogs were performed. Fifteen novel analogs were synthesized and evaluated for their anti-cancer activity using cell-based assay techniques and in vivo testing. As expected, the analogs improved cytotoxicity and were shown to increase the life span of cancer-bearing mice. Cytotoxicity was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays in HeLa, MDA-MB-435, and Vero cell lines. In vivo evaluation of anti-cancer activity performed in albino mice bearing Dalton's ascites carcinoma showed that the new analogs enhanced life span and prevented increases in body weight owing to tumor volumes. Moreover, cell-cycle analysis and Hoechst staining analysis proved the apoptotic potential of these analogs. Preliminary pharmacokinetic evaluation was carried out on the synthesized compounds to determine the lipophilicity and pKa. Lipophilicity was determined using high-performance liquid chromatography and the results showed a direct correlation between the observed anti-cancer activity and log P value, while pKa values indicated the ionizing range which is a prediction tool for solubility and permeability.

Buchwald-Hartwig reactions of monohaloflavones

The article describes the amination of different monobromo- or monochloroflavones with primary and secondary alkylamines and aniline derivatives by Buchwald-Hartwig reaction. The influence of the phosphine ligands used is described. The use of amino acid derivatives as a nitrogen source is also demonstrated. This latter reaction allows the synthesis of unique flavone-amino-acid conjugates.

Synthesis and evaluation of a series of novel imidazolidinone analogues of 6-aminoflavone as anticancer and anti-inflammatory agents

The flavone moiety is a potential pharmacophore known for its diverse range of pharmacological activities. Aminoflavones have recently been the subject of considerable attention as lead molecules in several cancer research projects. Imidazolidinone heterocycles represent another biologically active scaffold with known cytotoxic properties. In an attempt to provide synergistic cytotoxic activity, these two moieties have been combined, and the resulting novel analogues evaluated for their anticancer and anti-inflammatory activities. The results revealed that the cytotoxicities of these compounds were fivefold greater than those of aminoflavone. DNA histograms obtained from cell cycle analysis in the presence of these compounds were apoptotic in their nature. Furthermore, the in vivo screening of these compounds using Ehrlich's ascites tumour model showed an increase in life span, whereas an in vivo anti-inflammatory study resulted in the enhancement of the anti-inflammatory potential. The results therefore supported the hypothesis that there is a relationship between inflammation and cancer.

Synthesis and complete assignment of the 1H and 13C NMR signals of new acetamido and aminoflavonoid derivatives

The complete 1H and13C NMR assignment of 9 acetamidochalcones, 18 acetamidoflavones, 18 aminoflavones, 9 acetamidoflavonols and 9 aminoflavonols has been performed using one- and two-dimensional NMR techniques including COSY, HMQC and HMBC experiments. Copyright

Anti-HIV and antiplasmodial activity of original flavonoid derivatives

In our search for potent anti-HIV and antiplasmodial agents, novel series of flavonoid derivatives and their chalcone intermediates were synthesized and evaluated for inhibition of HIV multiplication and antiproliferative activity on Plasmodium falciparum