Abstract:
PURPOSE: Isoxazole or isoxazoline substituted 1,2,5,6-tetrahydropyridine derivative having high affinity for an acetylcholine receiptor is provided, which compound is useful as a muscarine type acetylcholine receiptor agonist, a recognition improving agent and a treating agent of cerebral nervous disease such as Alzheimer's disease. CONSTITUTION: The isoxazole or isoxazoline substituted 1,2,5,6-tetrahydropyridine derivative represented by formula(1) and a pharmaceutically acceptable salt thereof are provided, wherein R2 is C1-4 alkyl; one of R3 and R4 is one functional group in claim 1 and another of them is H; R5 is hydrogen, hydroxy, hydroxy C1-6 alkyl, C1-6 alkoxymethyl, C1-6 alkoxy, acetoxy, C1-4 alkyl ester, nitrile, aryl, phenylthio, methylthiomethyl, phenylsulfoxide, dimethylthiomethyl, C1-4 alkylketo, C1-4 alkylketo oxime, C1-4 alkylketo C1-5 alkyl oxime, and N-pyrrolidine-2-on; R6 is hydrogen; and R5 and F6 form -CH2OCH2 together. The process for preparing the isoxazole or isoxazoline substituted 1,2,5,6-tetrahydropyridine derivative represented by formula comprises the steps of: reacting 3- or 4-pyridine aldehyde oxime compound of formula(2) with chlorox to prepare nitrile oxide of formula(4); and cycloadddition reaction of nitrile oxide of formula(4) with alkene or alkyne compound of formula(8) or formula(9) to prepare a compound of formula(5) or formula(6); reacting the compound of formula(5) or formula(6) with alkyl iodide to prepare alkyl pyridine salt of formula(7); and reducing the alkyl pyridine salt of formula(7).
Abstract:
PURPOSE: Pyrrolidone derivative, a preparation process thereof and a pharmaceutical composition containing the same are provided, which pyrrolidone derivatives are useful as a muscarine type acetylcholine receiptor agonist, a recognition improving agent and a treating agent of cerebral nervous disease such as Alzheimer's disease. CONSTITUTION: The pyrrolidone derivative represented by formula(1) and a pharmaceutically acceptable salt thereof are provided, wherein n is 0 or 1; Aza is C1-4 alkyl substituted or unsubstituted heterocycle, or heterocycle substituted C1-4 alkyl; and heterocycle is hetero atom and saturated or unsaturated 5-membered ring or 5-membered ring containing nitrogen. The process for preparing the pyrrolidone derivative of formula(1) comprises the steps of: reacting azacyclo aldehyde oxime compound of formula(2) with chlorox to prepare nitrile oxide of formula(4); and cycloadddition reaction of nitrile oxide of formula(4) with pyrrolidone containing alkene or alkyne compound of formula(5).
Abstract:
PURPOSE: Provided are novel isoxazolylalkylpiperazine derivatives having selective activity for dopamine D3 and D4 receptor represented by the formula(1) and their manufacturing method by reductive amination in the presence of a reductant. The derivatives and their pharmaceutically acceptable salts are useful in the treatment of mental illness. CONSTITUTION: The novel isoxazolylalkylpiperazine derivative of the formula(1) is prepared by reacting amine compound represented by the chemical formula(2) with aldehyde compound shown in the chemical formula(3) in the presence of a reductant selected from NaBH(OAc)3, NaBH3CN and NaBH4 in a reductive amination reaction. In the formulae, R1,R2,R3,R4, and R5 are same or different each other and are hydrogen atom, halogen atom, C1-C6 alkyl, C1-C6 alkoxy, C2-C6 alkenyl, hydroxy, hydroxymethyl, aryl, heteroaryl, amino group, C1-C6 alkylamino, carbonyl, C3-C8 cycloalkyl, or C3-C8 heterocyclic group; R6 is hydrogen atom, halogen atom, alkyl, C1-C6 alkoxy, aryl, pyridyl, heterocyclic, pyrimidyl group; X is CH or nitrogen atom; and n is 3 or 4.
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:
PURPOSE: Provided is a method for manufacturing an iso-oxazole piperazin compound and its salts which can end up developing a lead compound for new drugs. CONSTITUTION: An isooxazol compound is manufactured by the next step: reacting the compound of the formula (2) with the compound of the formula (3) at room temperature, at 0-7 deg.C, in the presence of organic solvent, 0.1-2 equivalent, preferably 1 equivalent of base, and chlorinating agent for 30 minutes-4 hours, preferably 2 hours. Wherein, organic solvent is selected from benzene, methylene chloride, and tetrahydrofuran; a base is selected from methyl amine, ethyl amine, diethyl amine, dimethyl amine, trimethyl amine, cyclohexylamine, diethylisopropylamine, pyridine, or preferably triethylamine; And chlorinating agent is one of chlorine, N-chlorosuccinimide, and sodium hypochlorite. In the formula (1), (2), and (3), R1 and R6 are a phenyl group, benzyl group, halide phenyl group, phenyl group having substituted C1-C6 alkyl group, phenyl group having substituted C1-C6 alkoxy group, methyl phenyl group, or pyridyl group. R2-R5 is hydrogen, and X is nitrogen.
Abstract:
일반식 (II)로 표시되는 카르보닐 화합물을 용매와 염기 존재하에 일반식 (III)으로 표시되는 포스포늄염 화합물이나 또는 일반식 (IV)로 표시되는 포스포네이트 화합물과 반응시켜 새로운 일반식 (I)로 표시되는 [(아릴)이소옥소졸릴]메틸렌-아자비시클로 화합물을 제조하는 것으로, 본 발명 화합물은 무스카린성 아세틸콜린 수용체에 높은 결합 친화도를 나타내므로 알쯔하이머씨 병 등의 뇌신경 질환 치료제로 유용하다.
상기 식들에서, R은 각각 수소, 할로, 알콕시, 시아노, 알킬, 알케닐, 알키닐, 히드록시, 아미노, 니트로, 4-메톡시벤질옥시, 3급-부톡시카르보닐아미노 또는 약제학적으로 가능한 염을, R 1 ,R 2 및R R 는 각각 알킬, 아릴 또는 아랄킬을, X는 할로겐 원자를 각각 표시하며, n은 1 또는 2의 정수이다.