Abstract:
본 발명은 신규한 벤조아릴우레이도 화합물, 및 이의 퇴행성 뇌질환 예방 또는 치료에 있어서의 용도에 관한 것으로, 보다 상세하게는, 화학식 1의 구조를 갖는 벤조아릴우레이도 화합물, 및 이를 유효성분으로 함유하는 퇴행성 뇌질환의 예방 또는 치료용 조성물에 관한 것이다. 상기 퇴행성 뇌질환은 알츠하이머, 치매, 파킨슨병, 뇌졸중, 아밀로이드증, 픽 질환 (Pick's disease), 루게릭병, 헌팅턴병, 크로이츠펠트-야콥(Creutzfeld-Jakob)병 등일 수 있다. [화학식 1]
Abstract:
PURPOSE: A bis(styryl)pyrimidine and bis(styryl)benzene derivative are provided to reduce beta-amyloid toxicity and to improve memory. CONSTITUTION: A bis(styryl)pyrimidine and bis(styryl)benzene derivative is denoted by chemical formula 1. A method for preparing bis(styryl)pyrimidine and bis(styryl)benzene derivative comprises: a step of condensing a pyridine derivative compound of chemical formula 2 and a benzaldehyde derivative compound of chemical formula 3 under the base presence to obtain a compound of chemical formula 4; and a step of deprotecting the compound of the chemical formula 4. The deprotection is performed in methylchloride solution containing trifluoreacetic acid in hydrochloric acid/ethanol(3:1) solution.
Abstract:
A composition which contains caffeine, its analog, or its pharmaceutically allowable salt is provided to suppress infiltration, metastasis, and proliferation and prevent and/or treat brain cancer. A composition for preventing and treating brain cancer comprises caffeine, caffeine anaolog, or its pharmaceutically allowable salt as an active ingredient. The caffeine, caffeine analog or its pharmaceutically allowable salt has the content of 0.3-30 mM. The daily dose of the composition is 1-5 mg/kg and the composition is administered at one time or several times. The brain cancer is glioma, exothelioma, pituitary adenoma, schwannoma, craniopharyngioma or the congenital brain tumor. The composition selectively block the subtype 3 of activation of inositol-1,4,5-triphosphate receptoer(IP3R).
Abstract:
A chloride channel blocking agent containing anthranilic acid derivative is provided to show excellent validity and selectivity which result from excellent blocking activities of the anthranilic acid derivative. An anthranilic acid derivative is a compound having a structure represented by the formula I. In the formula I, R1 and R2 are independently selected from the group consisting of pentyl group, hexyl group, heptyl group, octyl group, decyl group, dodecyl group, tetradecyl group, hexadecyl group, cyclohexyl group, phenyl group, benzyl group, racemic-alphamethyl-benzyl group, chiral-alpha methyl-benzyl group, trifluoromethyl group, ethoxy group, butyloxy group, pentyloxy group, hexyloxy group, trifluoromethyloxy group and nitro group or two identical or different halogen atoms.
Abstract:
PURPOSE: A method for preparing vicinal chiral diol compounds through asymmetric dehydroxylation by using an osmium catalyst immobilized to imidazolium salts and chiral ligands, is provided to improve the production yield with high optical purity and recycling properties, without deteriorating the catalyst activity and enantiomeric excess. The method is environmentally friendly, due to the immobilization of the highly toxic and volatile osmium compound. CONSTITUTION: The method for preparing neighboring chiral diol compounds by using an osmium catalyst immobilized to imidazolium salts comprises: (1) adding chiral ligands represented by formulas 1 and 2, an imidazolium salt represented by formula 3 and an osmium catalyst to a solvent with stirring, and then further adding an auxiliary oxidizer and olefin compounds thereto with stirring; (2) removing all of the volatile compounds under reduced pressure; (3) extracting the residues free of volatile compounds from the step (2) with an organic solvent; and (4) separating vicinal chiral diol compounds out of the organic phase of the step (3).
Abstract:
PURPOSE: Provided are a chiral salen derivative used as a chiral ligand in an asymmetric epoxidation of olefin for producing chiral epoxy compounds and a chiral salen-metal derivative used as a chiral catalyst in the asymmetric epoxidation of olefin. CONSTITUTION: The chiral salen derivative is represented by the formula 1 and the chiral salen-metal derivative is represented by the formula 3, wherein R is C1-C24 straight or branched alkyl, halogen, alcohol, mercapto, or carboxyl-substituted C1-C24 straight or branched alkyl, cycloalkyl, aryl, or heteroaryl, H(1) and H(2) are trans each other, M is a transition metal ion such as Cr, Mn, V, Fe, Mo, W, Ru, Co, Ti, or Os, and A is an anion such as Cl-, CH3COO-, PF6-, or SbF6-.