Abstract:
본 발명은 세 고리형 테트라하이드로퓨란 화합물과 이의 제조방법에 관한 것으로서, 더욱 상세하게는 테트라하이드로퓨란-알렌 유도체를 출발물질로 사용하여 금속 촉매와 소듐 아자이드(NaN 3 )가 존재하는 조건하에서 분자내 고리화 반응을 통해 제조되어지는, 다음 화학식 1로 표시되는 신규 구조의 물질로서 세 고리형 테트라하이드로퓨란 화합물과 이의 제조방법에 관한 것이다.
상기 화학식 1에서, n은 0 또는 1의 정수를 나타내며; R은 페닐기 또는 치환된 페닐기를 나타내고, 이때 치환체는 C 1 -C 6 의 알킬기, C 1 -C 6 의 알콕시기, 하이드록시기, 및 C 1 -C 6 의 하이드록시알킬기 중에서 선택되고; R 1 은 수소원자, 할로겐원자, C 1 -C 6 의 알킬기, C 1 -C 6 의 알콕시기, 하이드록시기, 및 C 1 -C 6 의 하이드록시알킬기 중에서 선택된다. 세 고리 테트라히드로퓨란 화합물, 분자내 고리화 반응, 알렌
Abstract:
본 발명은 T-타입 칼슘채널(T-type calcium channel)에 대한 선택적인 길항작용이 우수하여 이와 관련된 뇌질환 및 심장질환의 치료 및 예방에 유효한 피페라지닐알킬 이소옥사졸 유도체와 용액상 조합 합성을 이용한 이 화합물의 제조방법 그리고 이 화합물의 T-타입 칼슘 길항제로서의 의약적 용도에 관한 것이다. 피페라지닐알킬 이소옥사졸, T-타입 칼슘채널, 간질, 고혈압
Abstract:
본 발명은 입체선택성이 높은 테트라하이드로퓨란 고리화합물과 이의 제조방법에 관한 것으로서, 트리메틸실라닐페타인올을 출발물질로 하고 루이스산(Lewis acid) 촉매를 이용한 분자간 프린스 고리화 반응을 수행하여 알렌(allene)을 포함하고 있는 입체선택성이 높은 다음 화학식 1로 표시되는 신규의 테트라하이드로퓨란 고리화합물과 이 화합물의 제조방법에 관한 것이다.
상기 화학식 1에서, R 1 은 탄소수 1 내지 8의 알킬기, 또는 방향족기를 나타내고, R 2 및 R 3 는 각각 수소원자, 탄소수 1 내지 8의 알킬기, 또는 방향족기를 나타내고, 상기 R 2 및 R 3 는 서로 결합하여 5 내지 7각형의 고리를 형성한다. 입체선택성, 테트라하이드로퓨란, 트리메틸실라닐페타인올, 알렌(allene), 루이스산 촉매, 분자간 프린스 고리화
Abstract:
PURPOSE: Provided is a method for preparing various types of 2-halo-1,3-diene compounds from allenol with ease by a simple process using no catalyst at a high yield. CONSTITUTION: The method for preparing a 2-halo-1,3-diene represented by formula 3 from an allenol represented by formula 2 comprises treating the allenol with an indium(III) halide salt represented by the formula of InX3 (wherein X is Cl, Br or I), through the reaction route as depicted in the following formula 4. In formulas 2 to 4, each of R1 to R4 represents H, Si, a halogen atom, an alkyl group, an aromatic substituent or a cyclic substituent. In the method, the reaction solvent is selected from acetonitrile and benzene.
Abstract:
A compound represented by a general formula (Ia) or (Ib) and a stereo-selective preparation method thereof using a carbonyl reductase which is separated from Kluyveromyces marxianus. The compound can be prepared by reduction of substituted beta-keto ester and can be used as an intermediate in preparing beta-lactam group antibiotics.
Abstract:
PURPOSE: Provided are Quinuclidine compounds which are useful for treatment of brain-nervous diseases caused by cholinergic neurotransmission such as Alzheimer's disease and a preparation method thereof. CONSTITUTION: A quinuclidine compounds of the formula (I) and pharmaceutically acceptable salts thereof are provided, wherein n is an integer of 1 to 5; R is a substituent on a benzene ring, hydrogen, F, Cl, methoxy, OH, NH2, NO2, 3,4-dimethoxy, 2,4-dimethoxy, cyano, C1-6 alkyl, 1,2 or 3 fluorine substituted C1-6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-6 alkenyl, 1,2 or 3 fluorine substituted C2-6 alkenyl, C2-6 alkynyl, 1,2 or 3 fluorine substituted C2-6 alkynyl, and C3-7 cycloalkyl. A method for preparing the quinuclidine compounds of the formula (I) comprises reacting a compound of the formula (II) with a compound of the formula (III) or (IV), wherein R1 and R2 are independently C1-6 alkyl, aryl or arylalkyl.
Abstract:
PURPOSE: A 4-aminopiperidine analogue and a producing method thereof are provided, therefore the compound can be useful as a ligand of a muscarine receptor, and it is thus used in study on Alzheimer disease. CONSTITUTION: The 4-aminopiperidine analogue is represented by formula(I), wherein R1, R2, R3, R4, R5, R6 and R7 are hydrogen, cycloalkyl having carbon number of 1 to 6, alkoxy, halogen, hydroxy, hydroxymethyl, aryl, heteroaryl, amino, alkylamino, alkenyl, carbonyl or hetero ring having carbon number of 5 to 7 wherein aryl is a ring having 6 atoms, two rings having 10 atoms or a stable resonance form having double bond to adjacent carbon; heteroaryl is a single ring aromatic group having carbon number of 5 to 6 or a double ring aromatic group having carbon number of 10 in which the heteroaryl has at least one hetero atom of N, O or S; hetero ring consists of 5 to 7 atoms having 1 to 3 of N, O or S; X is carbon or sulfur; and n is an integer of 1 to 2 wherein n is 1 when X is carbon and is 2 when X is sulfur. The 4-aminopiperidine analogue is produced by reacting piperidine or amine(II) with piperazine with ketone(III) in the presence of 1 to 3 equivalent of acetic acid, 2 to 10 equivalent of reducing agent and solvent at room temperature for 3 to 24 hours to produce 4-aminopiperidine(I) and adding NaHCO3 solution and organic solvent to 4-aminopiperidine(I); and drying the extracted 4-aminopiperidine(I), dissolving it, adding 1 to 10 equivalent of hydrogen chloride to the solution, and separating, washing and drying the hydrochloride of 4-aminopiperidine.
Abstract:
The present invention relates to 4,5-dihydroisoxazolylalkylpiperazine derivatives having selective biological activity at dopamine D3 and D4 receptors represented by the following Formula (1), and its preparation method through reductive amination reaction in the presence of reducing agent,wherein R1, R2, X and n are the same as defined in the specification.
Abstract:
PURPOSE: An alkenyl azabicyclic compound and a preparation method thereof are provided, which can be useful for treatment of cerebral nervous diseases caused by choline neurotransmission disorders. CONSTITUTION: An alkenyl azabicyclic compound represented by the formula(I) and pharmaceutically acceptable salts thereof are provided, wherein n is 1 or 2; and R is 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 substituted C1-C6 alkyl, 4-methoxybenzyloxy, t-butoxycarbonyl, C2-C6 alkenyl, 1, 2 or 3 fluorine substituted C2-C6 alkynyl and C3-C7 cyloalkyl. A method for preparing the alkenyl azabicyclic compound of the formula(I) comprises a compound of the formula(II) with a compound of the formula(III) or formula(IV), wherein R1, R2 and R3 are independently C1-C6 alkyl, aryl or arylalkyl.