Abstract:
PURPOSE: Methylidene piperidinyl oxazolidinone derivatives and a preparation method thereof are provided, which compounds have improved antimicrobial activity, so that they can be useful for treatment of infection of pathogenic bacteria having resistance to conventional antibiotics. CONSTITUTION: Methylidene piperidinyl oxazolidinone derivatives represented by the formula(1) or pharmaceutically acceptable salts thereof are provided, wherein X is oxygen or sulfur atom; R1 and R2 are independently hydrogen, cyano, alkyl, halogen, acetoxy, ethoxycarbonyl, hydroxy, hydroxyamino, methoxyimino, aminoethyl, or one or more hetero atom selected from oxygen, nitrogen and sulfur; and n is 1 or 2. The method for preparing the methylidene piperidinyl oxazolidinone derivatives of the formula(1) comprises reacting a compound of the formula(2) with a compound of the formula(3) in the presence of catalyst with or without organic solvent.
Abstract translation:目的:提供亚甲基哌啶基恶唑烷酮衍生物及其制备方法,该化合物具有改善的抗微生物活性,因此它们可用于治疗对常规抗生素具有抗性的病原菌的感染。 构成:提供由式(1)表示的亚甲基哌啶恶唑烷酮衍生物或其药学上可接受的盐,其中X是氧或硫原子; R 1和R 2独立地是氢,氰基,烷基,卤素,乙酰氧基,乙氧基羰基,羟基,羟基氨基,甲氧基亚氨基,氨基乙基或一个或多个选自氧,氮和硫的杂原子; 并且n为1或2.制备式(1)的亚甲基哌啶基恶唑烷酮衍生物的方法包括使式(2)化合物与式(3)化合物在催化剂存在或不与有机物 溶剂。
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:
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: Provided is (E)-prophenyl quaternary ammonium cephem compound and a pharmaceutically acceptable salt and a method for preparation thereof. The prepared compound has excellent antibacterial activity against both gram positive and gram negative strains, and is thus used for Cephalosporin based medicines. CONSTITUTION: (E)-prophenyl quaternary ammonium cephem compound is represented by the formula(1), wherein R1 is hydrogen, formyl, t-buthoxycarbonyl, benzyloxycarbonyl, p-nitrobenzyloxycarbonyl or trithyl; R2 is hydrogen, methyl, 2-fluoroethyl, formyl, chloroacetyl, benzoyl, p-nitrobenzyl, 2,2,2-trichloroethoxycarbonly, tetrahydropyranyl or trithyl; R3 is hydrogen, group forming carboxylic salt, 2,2,2-trichloroethyl, p-methoxybenzyl, p-nitrobenzyl, benzhydryl or t-butyl; R4 is methoxy, carbamoyl having substituent, or C5 hetero ring substituent represented by oxydiazole or triazole; and n is an integer of 1 or 2.
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.