The present application relates to a nitrogen-containing compound. The structural formula of the nitrogen-containing compound is as shown in a Formula 1, in which a ring A and a ring B are each independently selected from a benzene ring or a fused aromatic ring with 10 to 14 ring-forming carbon atoms, and at least one of the ring A and the ring B is selected from the fused aromatic ring with 10 to 14 ring-forming carbon atoms; L is selected from a single bond, a substituted or unsubstituted arylene group with 6 to 30 carbon atoms, and a substituted or unsubstituted heteroarylene group with 3 to 30 carbon atoms; and Het is a substituted or unsubstituted nitrogen-containing heteroaryl group with 3 to 30 carbon atoms. The nitrogen-containing compound of the present application can improve the luminous efficiency of an organic electroluminescent device and the conversion efficiency of a photoelectric conversion device using the nitrogen-containing compound.

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The present application relates to a nitrogen-containing compound. The structural formula of the nitrogen-containing compound is as shown in a Formula 1, in which a ring A and a ring B are each independently selected from a benzene ring or a fused aromatic ring with 10 to 14 ring-forming carbon atoms, and at least one of the ring A and the ring B is selected from the fused aromatic ring with 10 to 14 ring-forming carbon atoms; L is selected from a single bond, a substituted or unsubstituted arylene group with 6 to 30 carbon atoms, and a substituted or unsubstituted heteroarylene group with 3 to 30 carbon atoms; and Het is a substituted or unsubstituted nitrogen-containing heteroaryl group with 3 to 30 carbon atoms. The nitrogen-containing compound of the present application can improve the luminous efficiency of an organic electroluminescent device and the conversion efficiency of a photoelectric conversion device using the nitrogen-containing compound.

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A related substance of linagliptin intermediate 2-(chloromethyl)-4-methylquinazoline, 4,4′-(2-methylpropane-1,3-diyl)bis(2-(chloromethyl)quinazoline) and a method for synthesizing the related substance (impurity) by reacting 2-(chloromethyl)-4-methylquinazoline with acetaldehyde under an alkaline condition and a purification method are provided. The preparation method is simple and convenient to operate, short in reaction time, high in product purity, and high in yield. The synthesized related substance can be used for qualitative and quantitative analysis of the linagliptin intermediate 2-(chloromethyl)-4-methylquinazoline and API impurities of linagliptin, so that the medication safety of the linagliptin is improved.

A related substance of linagliptin intermediate 2-(chloromethyl)-4-methylquinazoline, 4,4′-(2-methylpropane-1,3-diyl)bis(2-(chloromethyl)quinazoline) and a method for synthesizing the related substance (impurity) by reacting 2-(chloromethyl)-4-methylquinazoline with acetaldehyde under an alkaline condition and a purification method are provided. The preparation method is simple and convenient to operate, short in reaction time, high in product purity, and high in yield. The synthesized related substance can be used for qualitative and quantitative analysis of the linagliptin intermediate 2-(chloromethyl)-4-methylquinazoline and API impurities of linagliptin, so that the medication safety of the linagliptin is improved.

Compounds that have agonist activity at one or more of the S1P receptors are provided. The compounds are sphingosine analogs that, after phosphorylation, can behave as agonists at S1P receptors.

The present specification provides a compound having a spiro structure, and an organic light emitting device including the same.

The present specification provides a compound having a spiro structure, and an organic light emitting device including the same.

This invention is directed to pyrrole, pyrazole, imidazole, triazole, and morpholine based selective androgen receptor degrader (SARD) compounds including heterocyclic anilide rings and their synthetic precursors. R-isomers, and non-hydroxylated and/or non-chiral propenamides, and pharmaceutical compositions and uses thereof in treating prostate cancer, advanced prostate cancer, castration resistant prostate cancer, triple negative breast cancer, other cancers expressing the androgen receptor, androgenic alopecia or other hyperandrogenic dermal diseases, Kennedy's disease, amyotrophic lateral sclerosis (ALS), abdominal aortic aneurysm (AAA), and uterine fibroids, and to methods for reducing the levels of androgen receptor-full length (AR-FL) including pathogenic or resistance mutations, AR-splice variants (AR-SV), and pathogenic polyglutamine (polyQ) polymorphisms of AR in a subject.

This invention is directed to pyrrole, pyrazole, imidazole, triazole, and morpholine based selective androgen receptor degrader (SARD) compounds including heterocyclic anilide rings and their synthetic precursors. R-isomers, and non-hydroxylated and/or non-chiral propenamides, and pharmaceutical compositions and uses thereof in treating prostate cancer, advanced prostate cancer, castration resistant prostate cancer, triple negative breast cancer, other cancers expressing the androgen receptor, androgenic alopecia or other hyperandrogenic dermal diseases, Kennedy's disease, amyotrophic lateral sclerosis (ALS), abdominal aortic aneurysm (AAA), and uterine fibroids, and to methods for reducing the levels of androgen receptor-full length (AR-FL) including pathogenic or resistance mutations, AR-splice variants (AR-SV), and pathogenic polyglutamine (polyQ) polymorphisms of AR in a subject.

Compounds of formula (I) wherein, R.sup.1, R.sup.2, R.sup.3, R.sup.4a, R.sup.4b and R.sup.5 are described herein, or a stereoisomer, enantiomer or tautomer thereof or mixtures thereof, or a pharmaceutically acceptable salt or solvate thereof, are described herein, as well as other compounds. These compounds are useful in treating inflammation and/or pain. Compositions comprising a compound of the invention are also disclosed, as are methods of using the compounds to treat inflammation and/or pain.