Abstract:
PURPOSE: A process for preparing 7-aminodesacetoxycephalosporanic acid useful as an important intermediate for preparing cephalosporin antibiotics is provided which comprises reaction of 3-substituted cephalosporin derivatives in the presence of metal indium or an indium compound. CONSTITUTION: A process comprises the steps of preparing a mixture of 7-aminodesacetoxycephalosporanic acid derivatives (I) and 3-exomethylenecephem derivatives (III) by the reaction of 3-substituted cephalosporin derivative (II) in a mixture solution of an organic solvent and water in the presence of solely indium metal or a mixture of indium metal and metal iodide at 10 to 80°C for 1 to 10 hrs and preparing 7-aminodesacetoxycephalosporanic acid (I) by the reaction of the obtained mixture with tetramethylsilylchloride at 20 to 30°C for 20 to 24 hrs.
Abstract:
본 발명은 박테리아에 살균효과를 나타내는 강력한 항균제인 피리도벤즈옥사진 제조에 유용한 중간체인 일반식(I)의 (+)실릴옥시 아크릴레이트 유도체 제조방법에 관한 것이다.
일반식(I)에서 R, R 1 , R 2 , R 3 는 탄소원자 1내지 8개의 알킬 또는 아릴기를 나타낸다. 본 발명에서는 일반식(IV)의 아크릴레이트 유도체와 일반식(V)의 트리알킬 실릴클로라이드를 염기 존재하에 유기용매 중에서 반응시켜 일반식(I)의 (+)실릴옥시아크릴레이트 유도체를 제조한다.
일반식(IV), (V), (I)에서 R, R 1 , R 2 , R 3 는 탄소원자 1내지 8개의 알킬 또는 아릴기를 나타낸다.
Abstract:
본 발명은 다음 일반식(I) (+)2-벤조일-3-[(프로피-2(S)-일)아미노]아크릴레이트 유도체 및 그의 제조장법을 제공한다.
상기식에서 X는 할로겐원자를 표시하고, X 1 과 X 2 는 각각 할로겐 원자또는 니트로기를 표시하며, R과 R 1 은 각각 탄소원자수 1 내지 4개의 알킬기를 표시한다. 본 발명의 일반식(I)의 화합물은 강력한 항균제인 벤즈옥사진 이성질체의 제조에 사용될 수 있는 유용한 중간체이다.
Abstract:
Novel preparation method of benzoxazine carboxylate derivative is provides which is useful intermediates in the preparation of antibacterial agents exhibiting strong sterilization effect on bacteria. 2-benzoyl-3-aminoacrylate derivatives are heated, stirred and subjected to reaction in organic polar solvent in the presence of base, water being added to them, and which is reacted to produce benzoxazine carboxylate derivative. According to the invention, 4 step process comprising the first cyclization reaction, protection group removing reaction, the second cyclization reaction and hydrolysis reaction are completed in an one step reaction.
Abstract:
본 발명은 (R)(-)-3,4-디플루오로-2-(2-히드록시프로폭시)아닐린을 출발물질로 하여 트리페닐포스핀, 카르본테트라클로라이드, 진크할라이드와 반응시키는 것으로 이루어진 항균제 제조에 유용한 중간체인 7,8-디플루오로-벤즈옥사진 유도체의 제조방법을 제공한다.
Abstract:
PURPOSE: A phenylpyrazolyl methyl-2-(4-substituted piperidine-1-yl)acetamide derivative as a calcium ion channel modulator is provided to be used as an agent for preventing and treating heart diseases or pain. CONSTITUTION: A phenylpyrazolyl methyl-2-(4-substituted piperidine-1-yl)acetamide derivative is denoted by chemical formula 1. An agent for preventing and treating heart diseases or an agent for relieving chronic and acute pain contains the compound of chemical formula 1 as an active ingredient.
Abstract:
PURPOSE: A novel imidazolylalkylcarbonyl derivative which is effective as calcium ion channel regulator is provided to effectively block T-type calcium ion channel, prevent and treat brain diseases, heart diseases and pain. CONSTITUTION: An imidazolylalkylcarbonyl derivative is denoted by chemical formula 1. The imidazolylalkylcarbonyl derivative of chemical formula 1 is prepared by performing amide bond of piperazine derivative of chemical formula 3 with imidazolylalkylcarboxylic acid of chemical formula 2. The amide bond is performed using binder selected from phosphonium system, ammonium system, carbodiimide system, imidazolinium, and organic phosphine system. A method for preparing the imidazolylalkylcarboxylic acid of chemical formula 2 comprises: a step of performing hetero-michael addition reaction of ethy alkenoate with imidazole compound under the presence of KF/Al2O3 catalyst to produce ethoxycarbonylalkylimidazole compound of chemical formula 2a; and a step of hydrolyzing the ethoxycarbonylalkylimidazole compound of chemical formula 2a to prepare imidazolylalkylcarboxylic acid of chemical formula 2.
Abstract translation:目的:提供一种有效阻断T型钙离子通道,预防和治疗脑疾病,心脏病和疼痛的新型咪唑烷基羰基衍生物,作为钙离子通道调节剂有效。 构成:化学式1表示咪唑烷基羰基衍生物。化学式1的咪唑烷基羰基衍生物通过化学式3的哌嗪衍生物与化学式2的咪唑基烷基羧酸的酰胺键进行制备。酰胺键使用选自鏻 系统,铵系统,碳二亚胺系统,咪唑啉鎓和有机膦系统。 制备化学式2的咪唑基烷基羧酸的方法包括:在KF / Al 2 O 3催化剂存在下,进行异丁烯酸乙酯与咪唑化合物的异迈克尔加成反应,生成化学式2a的乙氧基羰基烷基咪唑化合物的步骤; 以及水解化学式2a的乙氧基羰基烷基咪唑化合物以制备化学式2的咪唑基烷基羧酸的步骤。
Abstract:
본 발명은 신규한 피라졸릴카르복스아미도알킬피페라진 유도체와 이의 제조방법 및 이 화합물이 갖는 칼슘이온 채널 억제 효과에 의한 질환 치료제로 사용하는 의약적 용도에 관한 것이다. 피라졸릴카르복스아미도알킬피페라진 유도체, 칼슘이온 채널 억제제, 뉴런, 틸분극화, 급성통증, 만성통증, 신경병증성 통증, 항암제, 고혈압치료제