6296-55-5Relevant academic research and scientific papers
COMPOUNDS CONTAINING SI ATOMS FOR OPTICALLY ACTIVE DEVICES
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Page/Page column 106, (2018/09/18)
The present invention relates to novel 2-oxo-2H-chromen compounds, particularly to compounds comprising a photoactive unit, said novel compounds being particularly suitable for compositions and ophthalmic devices as well as to compositions and ophthalmic
HYDROPHILIC COMPOUNDS FOR OPTICALLY ACTIVE DEVICES
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Page/Page column 46, (2017/03/14)
The present invention relates to novel compounds, particularly to hydrophilic compounds, comprising a photoactive unit, said novel compounds being particularly suitable for ophthalmic devices. The present application also relates to ophthalmic devices com
Design and discovery of tyrosinase inhibitors based on a coumarin scaffold
Matos,Varela,Vilar,Hripcsak,Borges,Santana,Uriarte,Fais,Di Petrillo, Amalia,Pintus,Era
, p. 94227 - 94235 (2015/11/17)
In this manuscript we report the synthesis, pharmacological evaluation and docking studies of a selected series of 3-aryl and 3-heteroarylcoumarins with the aim of finding structural features for the tyrosinase inhibitory activity. The synthesized compounds were evaluated as mushroom tyrosinase inhibitors. Compound 12b showed the lowest IC50(0.19 μM) of the series, being approximately 100 times more active than kojic acid, used as a reference compound. The kinetic studies of tyrosinase inhibition revealed that 12b acts as a competitive inhibitor of mushroom tyrosinase with l-DOPA as the substrate. Furthermore, the absence of cytotoxicity in B16F10 melanoma cells was determined for this compound. The antioxidant profile of all the derivatives was evaluated by measuring radical scavenging capacity (ABTS and DPPH assays). Docking experiments were carried out on mushroom tyrosinase structures to better understand the structure-activity relationships.
Study of coumarin-resveratrol hybrids as potent antioxidant compounds
Matos, Maria J.,Vazquez-Rodriguez, Saleta,Borges, Fernanda,Santana, Lourdes,Uriarte, Eugenio,Mura, Francisco,Olea-Azar, Claudio
, p. 3290 - 3308 (2015/09/02)
In the present work we synthesized a selected series of hydroxylated 3-phenylcoumarins 5-8, with the aim of evaluating in detail their antioxidant properties. From an in depth study of the antioxidant capacity data (ORAC-FL, ESR, CV and ROS inhibition) it
Design and synthesis of ERα/ERβ selective coumarin and chromene derivatives as potential anti-breast cancer and anti-osteoporotic agents
Hussain, M. Kamil,Ansari, M. Imran,Yadav,Gupta, Puneet K.,Gupta,Saxena,Fatima,Manohar,Kushwaha,Khedgikar,Gautam,Kant, Ruchir,Maulik,Trivedi,Dwivedi,Kumar, K. Ravi,Saxena,Hajela
, p. 8828 - 8845 (2014/03/21)
Several new coumarin and chromene prototype derivatives have been synthesised and evaluated for their ERα and ERβ selective activity. Coumarin prototype compounds 18 & 19 were found to be ERα selective and the most active, exhibiting potential antiproliferative activity against both ER +ve & ER -ve breast cancer cell lines. The surprise finding of the series, however, are the novel prototype III chromenes 45 & 46, with aroyl substitution at the 6th position. Both the compounds have shown potent antiproliferative activity against both the breast cancer cell lines, promote alkaline phosphatase activity, enhance osteoblast mineralization in vitro, significantly decrease ERE-ERα dependent transactivation and induce ERβ activity. This specific upregulation of ERβ isoform activity of compound 45 may be responsible for the antiosteoporotic activity at picomolar concentration. In addition, both the compounds were also devoid of any estrogenic activity, which correlates to their antiestrogenic behaviour in the two breast cancer cell lines. Assessment of selectivity using specific SiRNAs for ERα and ERβ revealed that most of the compounds showed ERα and ERβ-mediated action, except compound 28, which showed selectivity to ERα only. Computational docking analysis of active compounds 18 and 45 was conducted to correlate the interaction with the two receptors and it was found that the docked conformations of the coumarin prototype, compound 18 at ERα and ERβ active sites were more or less superimposable on each other. However, the unique orientation of the aminoalkoxy side chain of novel chromene (prototype III) compound 45 in the ERβ binding cavity may be responsible for its potential biological response. The Royal Society of Chemistry.
One-pot greener protocol for the synthesis of substituted coumarins
Ranjith, Choorikkat,Paul, Nidhin,Vijayan
experimental part, p. 235 - 238 (2011/11/30)
An expeditious one-pot procedure for the synthesis of substituted coumarins under microwave irradiation is accounted. The method describes an easy and fast method for the synthesis of substituted acetoxy coumarins which are very good fluorophores for medical as well as industrial applications. It makes use of easily available reagents such as triethylamine and acetic anhydride as catalyst. The method finds good applications for the synthesis of multisubstituted coumarins.
Synthesis and biological evaluation of hydroxylated 3-phenylcoumarins as antioxidants and antiproliferative agents
Yang, Jie,Liu, Guo-Yun,Dai, Fang,Cao, Xiao-Yan,Kang, Yan-Fei,Hu, Li-Mei,Tang, Jiang-Jiang,Li, Xiu-Zhuang,Li, Yan,Jin, Xiao-Ling,Zhou, Bo
supporting information; experimental part, p. 6420 - 6425 (2011/11/29)
Based on the observed biological activities of coumarins and resveratrol, we synthesized fourteen hydroxylated 3-phenylcoumarins (stilbene-coumarin hybrids) including six novel ortho-hydroxy-methoxy substituted derivatives, 1-14, by Perkin reaction. We ch
Photophysical investigation of 3-substituted 4-alkyl and/or 7-acetoxy coumarin derivatives-A study of the effect of substituents on fluorescence
Ranjith, Choorikkat,Vijayan,Praveen, Vakayil K.,Kumar, N.S. Saleesh
experimental part, p. 1610 - 1616 (2010/06/20)
In the present work an array of novel substituted 2H-chromen-2-one (coumarin) derivatives has been subjected to photophysical analysis. Though the influence of the electron-donating groups such as amino, substituted amino, hydroxyl, alkoxy groups, etc. at position 7 of the coumarin ring system has been extensively studied, the luminescent properties of the coumarin moieties with an acetoxy substituent have not been explored. Herein it is attempted to study the variation of fluorescence behavior of substituted coumarin derivatives with change of nature and position of the substituents on the 2H-chromen-2-one skeleton. Effect of a methyl substituent at position 4 which imposes abnormal photophysical behavior to the chromenone unit has also been briefly described.
Modified coumarins. 29. Synthesis of structural analogs of natural 6-arylfuro[3,2-g]chromen-7-ones
Garazd,Garazd,Ogorodniichuk,Khilya
experimental part, p. 158 - 163 (2009/12/06)
3-Substituted 6-arylfuro[3,2-g]chromen-7-ones, structural analogs of natural furocoumarins, were synthesized by linear annelation of a furan fragment to a 3-arylcoumarin system.
Synthesis and binding affinity of 3-aryl-7-hydroxycoumarins to human α and β estrogen receptors
Kirkiacharian,Lormier,Resche-Rigon,Bouchoux,Cérède
, p. 51 - 56 (2007/10/03)
The synthesis of a set of substituted 3-aryl-7-hydroxycoumarins was performed. The study of the relations between their structure and their relative binding affinity (RBA) to human α and β estrogen receptors was achieved.
