Abstract:
PURPOSE: A quinoline carboxylic acid derivative with fluoropyrrolidine substituents and a preparation process thereof are provided. The compound has no toxicity and improved antimicrobial activity to both gram positive and negative bacteria. CONSTITUTION: A quinoline carboxylic acid derivative represented by the formula 1 in which 4-aminomethyl-4-fluoro-3-(Z)-alkoxyiminopyrrolidine is substituted at the 7-site of the quinolone scaffold, pharmaceutically acceptable acid adding salt and solvates thereof are provided. In the formula, Q is C-H, C-F, C-Cl, C-OCH3, C-OCHF2, C-CH3 or N; R is hydrogen, methyl or NH2; R1 is ethyl, cyclopropyl, t-butyl, or at least one fluoro substituted phenyl; R2 is hydrogen, C1-C5 alkyl, cyclopropyl, cyclopropyl methyl, C3-C6 alkenyl, C3-C6 alkynyl, phenyl or benzyl; and R3 or R4 is independently hydrogen, or C1-C3 alkyl, or R3 or R4 is hydrogen or C1-C3 alkyl bound nitrogen containing C3-C5 hetero ring compound. A process for preparing the quinoline carboxylic acid derivative represented by the formula 1 comprises the steps of: (1) reacting a quinolone scaffold compound of the formula 2 with a fluoro containing compound of the formula 3 in the presence of a solvent and a base to prepare a compound of the formula 4; and (2) deprotecting the compound of formula 4 with HX, wherein R3 or R4 is hydrogen; P is hydrogen or amine-protecting group; and X is F or Cl.
Abstract:
PURPOSE: Provided are optically active quinoline carboxylic acid derivatives, pharmaceutically acceptable salts thereof, solvates thereof, and a process for preparation thereof, which are useful for an antibacterial agent. CONSTITUTION: The optically active quinoline carboxylic acid derivatives are represented by the following formula(1), and contains optical activity-causing 4-aminomethyl-4-methyl-3 (Z)-alkoxyiminopyrrolidine substituents at the 7-position of the quinolone nuclei, their pharmaceutically acceptable salts, and their solvates. In the formula(1), Q is C-H, C-F, C-Cl or N; Y is H or NH2; R is a straight or branched alkyl group of Cl-C, an allyl group or a benzyl group, and * represents optically pure chiral carbon atom. Their preparation process comprises the steps of: condensing the quinolone nuclei-containing compound of formula(3), with the ketal compound of formula(2a), in the presence of an acid acceptor to give the optically active quinoline carboxylic acid derivative of formula(4); deketalizing the optically active quinoline carboxylic acid derivative of formula(4) to give the pyrrolidinone compound of formula(5); and reacting the pyrrolidinone compound of formula(5) with an alkoxylamine in the presence of a base to obtain the desired compound of formula(1).
Abstract:
본 발명은 광학활성의 퀴놀린 카르복실산 유도체, 이의 약학적으로 허용되는 염, 이의 용매화물 및 이의 제조방법에 관한 것으로, 구체적으로 본 발명은 퀴놀론 모핵의 7-위치에 광학활성을 유발하는 4-아미노메틸-4-메틸-3-(Z)-알콕시이미노피롤리딘 치환체를 갖는 광학활성의 퀴놀린 카르복실산 유도체에 관한 것으로, 본 발명의 화합물은 그의 거울상 이성질체, 라세믹 혼합물 및 기존의 항균제에 비하여 항균 효과가 매우 우수하고 약동력학적 특성이 우수할 뿐만 아니라 광독성도 거의 나타내지 않기 때문에 항균제로서 효과적으로 사용될 수 있다.
Abstract:
본 발명은 위장계통을 자극하는 생리활성을 가지는 다음 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 및 그 약제학적으로 허용되는 부가염의 새로운 제조방법에 관한 것이다. 보다 바람직하게는 다음 일반식(Ⅰ)에서 L이 3-(4-플루오로펜옥시)프로필이고, R이 메틸인 위장 연동운동 촉진제로 사용되는 시사프라이드의 새로운 제조방법에 관한 것이다. 또한 본 발명은 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 제조에 유용한 구조식(Ⅲ)의 새로운“활성티오에스테르”및 그 제조방법에 관한 것이다. 즉, 본 발명은 구조식(Ⅶ)의 카르복실산 유도체와 일반식(Ⅵ)의 알킬클로로포르메이트를 반응시켜 일반식(Ⅴ)의 중간체를 생성시킨 후 일반식(Ⅴ)의 중간체와 구조식(Ⅳ)의 2-머캅토벤즈이미다졸을 반응시켜 구조식(Ⅲ)의 새로운“활성티오에스테르”를 제조한 다음, 일반식(Ⅱ)의 시스-피페리딘아민 유도체와 반응시켜 목적화합물인 일반식(Ⅰ)의 시스프라이드를 포함하는 벤즈아미드 유도체를 제조하는 방법에 관한 것이다.
상기 식에서 L은 아르알킬 또는 아릴옥시알킬인데, 이때 알킬부분은 C 1 -C 6 의 알킬이고, 아릴부분은 할로, C 1 -C 6 의 저급알킬 또는C 1 -C 6 의 저급알콕시로부터 독립적으로 선택된 3개까지의 치환체로 임의치환된 것이고; R은 C 1 -C 6 의 저급알킬이며; R 1 은 에틸, 이소프로필 또는 이소부틸이다.
Abstract:
PURPOSE: An N-(4-piperidine)benzamide has a physiological activity for the stimulating gastrointestinal system and a pharmaceutically accepted additional salt thereof. CONSTITUTION: An N-(4-piperidine)benzamide represented by the formula (1) having a physiological activity for the stimulating gastrointestinal system and a pharmaceutically accepted additional salt thereof: wherein L is aralkyl or aryloxyalkyl, wherein the alkyl moiety is C1-C6 alkyl and the aryl moieties are up to three substituents each independently selected from the group consisting of halo, C1-C6 low alkyl and C1-C6 low alkoxy; and R is C1-C6 low alkyl.
Abstract:
PURPOSE: Provided is a method for manufacturing 4-aminomethyl-4-methyl-3-(Z)-alkoxyamino derivative which has antibacterial effects on both gram positive and negative bacteria so that the derivative is useful for medical purposes. And Its pharmaceutically acceptable salt and its solvate are also provided. CONSTITUTION: A method for producing 4-aminomethyl-4-methyl-3-(Z)-alkoxyamino derivative comprises the following steps of: i) reacting the compound of the formula (3) with ketal compound of the formula (2a) in the presence of acid receptor, for 1-24 hours at 0-150 deg.C, preferably from room temperature to 90 deg.C, to manufacture optically active quinoline carboxylic acid derivative of the formula (4); ii) deketalizing the quinoline carboxylic acid derivative to manufacture pyrrolidinone of the formula (5) at from room temperature to 100 deg.C; and iii) reacting the pyrrolidinone with alkoxylamine in the presence of base at 0-90 deg.C. In the formula (1), Q is C-H, C-F, C-CL, or N. Y is H or NH2. R is a C1-C4 linear or branched alkyl, aryl, or benzyl group. * is an optically pure asymmetric carbon.
Abstract:
PURPOSE: An N-(4-piperidine) benzamide is prepared by the reaction of thioester and is-piperidine amine derivatives which has gastroenteric irritative physiological activities. CONSTITUTION: Carboxylic derivatives and alkyl chloroformate are reacted to give an intermediate(formula 5), and reacted with 2-mercaptobenzimidazole to give the novel active thioester(formula 3). Active thioester and is-piperidine amine derivatives(formula 2) are reacted to give benzamide derivatives(formula 1; R is C1-C6 lower alkyl; L is an alkyl or aryloxyalkyl). Thus, 376 mg of triethyl amine and 280 mg of ethyl chloroformate are drop in 500 mg of 4-amino-5-chloro-2-methoxybenzoic acid and reacted at 0-10°C for 1.5 hours, adding 396 mg of 2-mercaptobenzimidazole at room temperature for 6 hour. A mixed solution of 630 mg of is-4-amino-3-method-1-£3-(4-fluorophenoxy) propyl|piperidine and 1 ml of N,N-dimethyl form amide is drop at room temperature for 5 hours in the reactant to give 963 mg of is-2-method-4-amino-5-chloro-N-£1-£3-(4- fluorophenoxy)propyl|-3-method-4-piperidinyl|benzamide1 hydrate.
Abstract:
PURPOSE: A method for preparing N-(4-piperidine)benzamide is provided in which high purity of compound can be obtained in high yield and a side reaction product is easily separated from an object product. CONSTITUTION: A benzamide derivatives of formula I is obtained by reacting an active ester compound of formula II and a piperidine amine compound of formula III. The active ester compound of formula II is obtained by reacting a compound of formula VI and a compound of formula IV and the piperidine amine compound of formula III is obtained by using a ketone compound of formula VII. The compound of formula VI is obtained by reacting a carboxylic acid compound of formula II` and an ethylchloroformate or an isobytylchloroformate of formula V.