To improve the emission efficiency, the driving voltage and the lifetime of an organic light-emitting device using a delayed fluorescent material. A host material for a delayed fluorescent material, containing a compound represented by the following general formula: R.sup.1 to R.sup.5 each are a substituent not containing a cyano group, n1 to n5 each are 0 to 4, Ar is a monocyclic arylene group or a monocyclic heteroarylene group.

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The present invention relates to novel compounds comprising one or more hydrophobic domains and a hydrophilic domain comprising PEG moieties, useful for binding cells, as well as uses and compositions related thereto. The compounds are useful for immobilizing and/or stabilizing cells.

The present invention relates to novel compounds comprising one or more hydrophobic domains and a hydrophilic domain comprising PEG moieties, useful for binding cells, as well as uses and compositions related thereto. The compounds are useful for immobilizing and/or stabilizing cells.

The present invention relates to novel synthetic analogs of xanthohumol and the use thereof.

The present invention relates to novel synthetic analogs of xanthohumol and the use thereof.

The invention provides tricyclic compounds and their use in treating medical disorders, such as obesity. Pharmaceutical compositions and methods of making various tricyclic compounds are provided. The compounds are contemplated to have activity against methionyl aminopeptidase 2.

The invention provides tricyclic compounds and their use in treating medical disorders, such as obesity. Pharmaceutical compositions and methods of making various tricyclic compounds are provided. The compounds are contemplated to have activity against methionyl aminopeptidase 2.

Provided is an enzyme-specific fluorescent compound capable of being retained in cells, which can emit fluorescence specifically in a target cell, particularly a cell capable of expressing a reporter enzyme such as -galactosidase, and can covalently bind to a protein in the cell to exhibit an excellent property of being retained in the cell. The fluorescent compound comprises a compound represented by formula (I) or a salt thereof. In formula (I), A, X, Y and R1 to R9 are as described in claim 1.

Provided is an enzyme-specific fluorescent compound capable of being retained in cells, which can emit fluorescence specifically in a target cell, particularly a cell capable of expressing a reporter enzyme such as -galactosidase, and can covalently bind to a protein in the cell to exhibit an excellent property of being retained in the cell. The fluorescent compound comprises a compound represented by formula (I) or a salt thereof. In formula (I), A, X, Y and R1 to R9 are as described in claim 1.

The present invention relates to a novel geranyl flavonoid derivative with improved water-solubility or a pharmaceutically acceptable salt thereof, a method for preparing the same, and a method for treating cancer using the same. Particularly, the novel geranyl flavonoid derivative of the present invention inhibits the expression of STAT3 target protein by suppressing the phosphorylation of STAT3 (Signal Transducers and Activators of Transcription 3) protein, suggesting that it has cancer cell growth inhibiting effect in various cancer cell lines. Also, the compound of the invention has the effect of reducing the size and weight of a tumor significantly in vivo, so that the geranyl flavonoid derivative or the pharmaceutically acceptable salt thereof can be efficiently used for the treatment of cancer.