Abstract:
PURPOSE: Provided are 5-(4-Substituted-(1,2,5)thiadiazole-3-yl)-3-methyl-1,2,3,4-tetrahydropyrimidine derivatives which are a muscarinic receptor agonists and used as therapeutic agents in Alzheimer's disease. Also, provided are their pharmaceutically acceptable salt, their preparation process and their use. CONSTITUTION: 5-(4-Substituted-(1,2,5)thiadiazole-3-yl)-3-methyl-1,2,3,4-tetrahydropyrimidine derivatives are represented by the formula(1), wherein X represents dialkylamine group, piperidinyl group, morpholinyl group or N-methylpiperazinyl group. They are as follows: 3-dimethyl-(4-(3-methyl-1,2,3,4-tetrahydropyrimidine-5-yl)-(1,2,5)thiadiazole-3-yl)amine; 3-methyl-5-(4-pyrrolidine-1-yl-(1,2,5)thiadiazole-3-yl)-1,2,3,4-tetrahydropyrimidine; 3-methyl-5-(4-piperidine-1-yl-(1,2,5)thiazol-3-yl)-1,2,3,4-tetrahydropyrimidine; 4-(4-(3-methyl-1,2,3,4-tetrahydropyrimidine-5-yl)-(1,2,5)thiadiazole-3-yl)morpholine or 3-methyl-5-(4-(4-methylpiperazin-1-yl)-(1,2,5)thiadiazole-3-yl)-1,2,3,4-tetrahydropyrimidine. The therapeutic agent in Alzheimer's disease contains 5-(4-Substituted-(1,2,5)thiadiazole-3-yl)-3-methyl-1,2,3,4-tetrahydropyrimidine derivative or its pharmaceutically acceptable salt.
Abstract:
본 발명은 무스카린 수용체 작용물질(muscarinic receptor agonist)로서 기억항진 및 노인성 치매 치료제로 유용한 다음 화학식 1로 표시되는 5-(4-치환된-[1,2,5]-티아디아졸-3-일)-3-메틸-1,2,3,4-테트라하이드로피리미딘 유도체와 이의 약제학적으로 허용 가능한 염, 이의 제조방법, 그리고 이의 용도에 관한 것이다.
상기 화학식 1에서 : X는 디알킬아민기, 피페리디닐기, 피롤리디닐기, 모포리닐기 또는 N-메틸피페라지닐기를 나타낸다.
Abstract:
본 발명은 베타메칠아제티디논 유도체의 제조방법으로서, 더욱 상세하게는 다음 구조식(Ⅰ)로 표시되는 1-베타메칠카르바페넴 항생제의 제조시 중간체로 사용되는 다음구조식(Ⅱ)의 베타메칠아제티디논 유도체, 즉(3S, 4S)-3 (1R)-1〔(t-부틸디메칠실릴)옥시〕에칠}-4{〔(1R)-1-메칠-(4, 4-디알킬-2-치옥소-1, 3-옥사 또는 치아졸리딘)-3-일〕메칠}아제티딘-2-온의 제조방법에 관한 것이다.
상기 식에서, R은 항생작용을 지닌 활성잔기를 나타내며, R 1 은 히드록시보호기중 t-부칠디메칠실릴기를 나타내고, R 2 는 수소 또는 저급알킬기를 나타내고, X 1 및 X 2 는 산소 또는 황원자를 나타낸다. 본 발명에 의하면 상기 구조식(Ⅱ)의 베타메칠아제티디논 유도체가 높은 입체선택성으로 고수율로 얻어지며, 어키랄 옥시러리를 사용하여 간단한 제조방법을 제공한다.
Abstract:
PURPOSE: Provided is a method for manufacturing a 5-(4-substituted-£1,2,5|thiadiazol-3-il)-3-methyl-1,2,3,4-tetrahydropyrimidine derivative which is effective on improving memory and treating Alzheimer's disease. CONSTITUTION: A 5-(4-substituted-£1,2,5|thiadiazol-3-il)-3-methyl-1,2,3,4-tetrahydropyrimidine derivative represented by the formula (1) is manufactured by the following steps of: i) reacting 5-pyrimidine carboxylaldehyde of the formula (2) with KCN/HOAc to synthesize hydroxy-pyrimidine-5-il-acetonitrile of the formula (3); ii) reacting hydroxy-pyrimidine-5-il-acetonitrile of the formula (3) with ammonium chloride and ammonium hydroxide to obtain amino-pyrimidine-5-il-acetonitrile of the formula (4) and reacting again amino-pyrimidine-5-il-acetonitrile with S2CL2 to obtain 5-(4-chloro-£1,2,5|thiadiazol-3-il)pyrimidine of the formula (5); iii) reacting 5-(4-chloro-£1,2,5|thiadiazol-3-il)pyrimidine with NaSH and alkylhalide to obtain a compound of the formula (6a); iv) reacting the compound of the formula (6a) with CH3L or methylfluoromethansulfonate at room temperature to obtain 5-(4-substituted sulfanil-£1,2,5|thiadiazol-3-il)-3-methylpyrimidium iodide of the formula (7a); and v) reducing 5-(4-substituted sulfanil-£1,2,5|thiadiazol-3-il)-3-methylpyrimidium iodide with NaBH4 to obtain a 5-(4-substituted-£1,2,5|thiadiazol-3-il)-3-methyl-1,2,3,4-tetrahydropyrimidine derivative. In the formula (1), X is oxygen atom or sulfur atom; R is hydrogen atom, low alkyl group having 1-5 carbon, propargyl group, benzil group, 4-methylbenzil group, or 4-chlorobenzil group.
Abstract:
(5R,6S)-6((1R)-1-hydroxyethyl)-2-((5R)-5-oxazolidinonyl)-3-carboxyl-2-penem derivatives(I; R= H atom, methyl, ethyl, phenyl, aryl ring compound substituted by oxygen, nitrogen or sulphur; R1= H or ester forming group hydrolyzed in a biomass, indanyl, phthalidyl, methoxymethyl, glycycloxymethyl, phenylglycycloxymethyl, etc.) were prepared. Thus, 250 mg (5R)-5-carboxyl-3-t-butyldiphenylsilyl oxazolidinone was dissolved at 0 deg.C in 150 ml dichloromethane, and added 27.1 ml 60 % sodium hydride, 0.06 ml pyridin at -30 deg.C, 0.05 ml thionyl chloride, reacted at room temperature for 2 hours. 0.56 g (3S,4R)-3-(1-(R)-t-butyldimethylsilyloxyethyl)-1-(1-(4-nitrobenzyloxy-carbonyl)-1-(triphenylphosphoranylidene)methyl)azetidin-2-one-4-thiolate was reacted with the reactant to give 430 mg (3S,4R)-3-(1-(R)-t- butyldimethylsilyloxyethyl)-4-((5R)-5-(3-t-butyldiphenylsilyloxazolidinonyl)carbothio)-1-(1-(4-nitrobenzyloxycarbonyl)-1-(triphenylphosphoranylidene)methyl)azetidinone.
Abstract:
(3S,4S)-3{(1R)-1-[(t-Butyldimethylsillyl)oxy ethyl}-4-{[(1R)-1-methyl-(4,4-dialkyl-2-thioxo-1,3-oxaorthiazolidine)-3)-yl methyl}azethidine-2-one(II), useful as an intermediate in manufacturing 1-beta-methylcarbaphenem(I) antibiotics, is manufactured. In formula, R is active residual group having an anti biosis, R1 is t-butyldimethylsillyl group of hydroxy protecting group, R2 is H or low alkyl group, X1,X2 are O or S.
Abstract:
본 발명은 합성β-락탐계의 신규한 페넴 화합물의 유도체 및 그의 제조방법으로, 특히 트란스 형태의 2-치환-2-페넴-3-카복실산 화합물에 관한 것이다. 즉, 본 발명은 다음구조식(I)의 (5R,6S)-6-[(1R)-1-히드록시에틸]-2-[(5R)-5-옥사졸리디노닐]-3-카복실-2-페넴 유도체와 식(Ⅱ)의 (5R,6S)-6-[(1R)-1-히드록시에틸]-2-[((5R)-5-옥사졸리디노닐)메틸티오]-3-카복실-2-페넴 유도체 및 그들의 제조방법이다.
윗 식에서, R은 수소원자, 메틸, 에틸, 페닐, 아릴, 산소 질소 또는 황으로 치환된 고리 화합물이며, R 1 은 수소이거나 또는 생체내에서 가수분해되는 에스테르를 형성하는 군을 포함한다.