Abstract:
PURPOSE: Azabicyclic compounds having an oxime moiety and a preparation method thereof are provided, which can be useful for treatment of cerebral nervous diseases caused by choline neurotransmission disorders including Alzheimer's disease. CONSTITUTION: An azabicyclic compounds having an oxime moiety represented by the formula(I) and pharmaceutically acceptable salts thereof are provided, wherein n is 1 or 2; m is 0 or 1; and R is at least one substituent selected from the group consisting of hydrogen, F, Cl, methoxy, OH, NH2, NO2, 3, 4-dimethoxy, 2, 4-dimethoxy, cyano, C1-C6 alkyl, 1, 2 or 3 fluorine atom substituted C1-C6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-C6 alkenyl, 1, 2 or 3 fluorine atom substituted C2-C6 alkynyl, C3-C7 cycloalkyl and aromatic atom group, in which the aromatic atom group is selected from phenyl, 2- or 3-thienyl, 2- or 3-puridyl, 2- or 3-pyrrolyl; and the substituent of the aromatic atom group is selected from the group consisting of Cl, Br, F, trifluoromethyl, NH2, NO2 and C1-C4 straight or branched chain alkyl.
Abstract:
본 발명은 인듐 금속 및 산을 이용하여 알데히드(-CHO)의 알릴화 및 니트로기(-NO 2 )의 환원 반응을 동시에 행하는 방법에 관한 것이며, 보다 구체적으로는 화학식 1의 화합물을 인듐 금속 및 산의 존재하에 화학식 2의 화합물과 반응시켜 알데히드의 알릴화 반응과 니트로기(-NO 2 )의 아민기(-NH 2 )로의 환원 반응을 동시에 행하여 화학식 3의 화합물을 제조하는 방법에 관한 것이다(반응식 1). 화학식 1
화학식 2
화학식 3
반응식 1
상기 화학식 1 내지 3 및 반응식 1 중에서, R은 C 6 -C 10 방향족 고리를 말하며; R 1 -R 3 은 서로 독립적으로 수소, C 1 -C 6 알킬기, 페닐기 또는 C 1 -C 3 알콕시 카르보닐기를 말하며; k는 0 - 4이며, 각 치환체 Y는 할로겐, 할로겐에 의해 치환된 또는 비치환된 C 1 -C 3 알킬기, 또는 할로겐에 의해 치환된 또는 비치환된 C 1 -C 3 알콕시기이거나, 두 개의 Y가 조합하여 5원 또는 6원 고리 또는 헤테로고리를 형성할 수 있으며; m은 1 - 3이며, n은 1 - 3이며; X은 Cl, Br, I로 구성되는 군에서 선택되는 할로겐 원소를 말한다. 상기 제조방법은 종래의 방법에 비해 알데히드의 알릴화 반응과 니트로기의 환원 반응을 동시에 수행할 수 있으며, 반응 수율이 높고, 반응이 상온에서 짧은 시간내에 진행하고, 수용액 상에서 반응이 손쉽게 진행되므로 환경친화적인 산업공정이다는 장점이 있다.
Abstract:
PURPOSE: Provided are novel 4,5-dihydroisoxazolylalkylpiperazine derivatives having selective biological activity to dopamine D3 and D4 receptors, and their preparation method by reductive amination in the presence of reductant. CONSTITUTION: 4,5-dihydroisoxazolylalkylpiperazine derivative is represented by the formula(1), wherein R1, R2, R3, R4 and R5 are identical or different from each other, and represents individually hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 alkoxy group, C2-C6 alkenyl group, hydroxy group , hydroxymethyl group, aryl group, heteroaryl group, amino group, C1-C6 alkyl amino group, carbonyl group, C3-C8 cycloalkyl group, or C3-C8 heterocyclic group; R6 represents hydrogen atom, halogen atom, alkyl group, C1-C6 alkoxy group, aryl group, pyridyl group, heterocyclic group or pyrimidyl group; X represents CH or nitrogen atom; and n is 3 or 4.
Abstract:
PURPOSE: A method for allylating an aldehyde group and reducing a nitro group simultaneously by using indium and an acid is provided, to obtain the compound of the formula 3 with high yield and rapidly at a low temperature. CONSTITUTION: The method comprises the steps of reacting the compound of the formula 1 with the compound of the formula 2 in the presence of indium and an acid to obtain the compound of the formula 3 by the allylation of an aldehyde group and the reduction of a nitro group, wherein R is an aromatic cycle of C6-C10; R1, R2 and R3 are independent one another and are H, an alkyl group of C1-C6, a phenyl group or an alkoxycarbonyl group of C1-C3; k is an integer of 0-4; Y's are a halogen atom, an alkyl group of C1-C3 substituted with halogen or unsubstituted, or an alkoxy group of C1-C3 substituted with halogen or unsubstituted, and two Y's combine to from a five- or six-membered ring or a five- or six-membered heterocycle; m is integer of 1-3; n is an integer of 1-3; and X is Cl, Br or I. Preferably the acid is a strong acid comprising HCl, HBr, HI, sulfuric acid, nitric acid and trifluoroacetic acid. Preferably the reaction is carried out in a polar solvent.
Abstract:
본 발명은 인듐 금속을 이용하여 니트로기(-NO 2 )를 갖는 화합물을 아민(-NH 2 ) 화합물로 환원시키는 방법을 제공한다. 보다 구체적으로는 인듐 금속을 이용하여 화학식 1을 갖는 지방족 또는 방향족 화합물을 화학식 2의 화합물로 환원시키는 방법을 제공한다. [화학식 1]
[화학식 2]
상기 화학식 1 및 2에서, R은 지방족 또는 방향족 화합물을 나타내며, n은 1-5의 정수, 바람직하게는 1-3의 정수, 가장 바람직하게는 1 또는 2이다. 인듐 금속을 이용한 본 발명의 환원 반응은 상온에서 짧은 시간 내에 진행될 뿐만 아니라 수개의 니트로기를 짧은 시간 내에 한번에 환원시킬 수 있다. 또한 분자내 다른 관능기에 영향을 미치지 아니하고 니트로기만 선택적으로 환원시킬 수 있으며, 수용액 상에서 반응이 쉽게 진행되므로 환경친화적 산업 공정이다는 장점을 가지고 있다. 따라서 화학 공업 분야에서 다양하게 응용될 수 있다.
Abstract:
PURPOSE: The piperazinylethyl triazole derivatives and a producing method thereof are provided, thereby the piperazinylethyl triazole compounds can be produced in higher yield and purity. CONSTITUTION: The piperazinylethyl triazole derivatives are represented by formula (1), in which R1 is C6 to C10 aromatics, C6 to C10 aromatic carbohydrate substituted with C1 to C6 alkyl, C6 to C10 aromatic carbohydrate substituted with C1 to C4 alkoxy, C6 to C10 aromatic carbohydrate substituted with halogen or C7 to C10 arylalkyl; R2 to R5 are independently hydrogen, halogen, methyl or ethyl; R6 to R7 are independently hydrogen, phenoxy substituted with halogen, -OC(O)R8 or -NR9R10; Y is O or S; R8 is C1 to C6 alkyl; R9 and R10 is independently C1 to C6 alkyl; R11 is hydrogen, C1 to C6 alkyl or phenyl; R12 is independently hydrogen or C1 to C6 alkyl; n is an integer of 1 or 2; k is 5 or 6 when n is 1 or 2, respectively; and m is 4 or 5 when n is 1 or 2, respectively. The piperazinylethyl triazole derivatives is produced by separation and purification using acid.
Abstract:
PURPOSE: A novel tertiary aminoethyl isooxazol derivative is provided, which acts as an antagonist of dopamine-1 receptor relating to various central nervous system disorders. And a method for preparing the same is also provided. CONSTITUTION: The tertiary aminoethyl isooxazol derivative is represented by the formula (1) and is prepared by dissolving a compound represented by the formula (2) and a compound represented by the formula (3) in a solvent to react them with each other in the presence of base. In the formulae 1-3, R1 is phenyl, phenyl substituted by halogen atom, phenyl substituted by trifluoromethyl, phenyl methyl having a trifluoromethyl substituent in 2, 3 or 4 position of the phenyl group, diphenylmethyl having a halogen atom substituent in 2, 3 or 4 position of the phenyl group, benzyl or 3-hydrobenzimidazole-2-one, each R2-R5 is hydrogen, R6 is phenyl substituted by at least one selected from the group consisting of nitro group, phynoxy group, methoxy group, trifluoromethyl group and halogen group, vinyl substituted by phenyl group or C5 or C6 unsaturated or saturated hetero cyclic compound substituted by O, S or N, and X is nitrogen or carbon.