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:
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: 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).