Boric anhydrides of
6-fluoro-7-chloro-1-methylamino-4-oxo-1,4-dihydro-quinoline-3-carboxylic
acid
    1.
    发明授权
    Boric anhydrides of 6-fluoro-7-chloro-1-methylamino-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid 失效
    6-氟-7-氯-1-甲基氨基-4-氧代-1,4-二氢 - 喹啉-3-羧酸的硼酸酐

    公开(公告)号:US4806645A

    公开(公告)日:1989-02-21

    申请号:US105295

    申请日:1987-08-07

    CPC classification number: C07F5/04

    Abstract: The invention relates to new 6-fluoro-7-chloro-1-methylamino-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid/boric acid anhydrides of the general Formula I ##STR1## (wherein R and R.sup.1 stand for halogen; an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen; or an aromatic acyloxy group comprising 7-11 carbon atoms).The new compounds of the general Formula I are valuable intermediates useful in the preparation of the antibacterial agent 6-fluoro-1-methylamino-7-(4-methyl-piperazino)-4-oxo-1,4-dihydro-quinoline-3- carboxylic acid.The new compounds of the general Formula I may be prepared by reacting a compound of the Formula II ##STR2## or a compound of the general Formula III ##STR3## (wherein R.sup.2 stands for alkyl comprising 1-4 carbon atoms) with hydrogen fluoro borate of the Formula IVHBF.sub.4 /IV/or a borone trihalide of the general Formula VBX.sub.3 /V/(wherein X stands for fluorine, chlorine or bromine) or a complex thereof formed with an ether or a borone derivative of the general Formula VI ##STR4## (wherein R.sup.3, R.sup.4 and R.sup.5 stand for alkyl comprising 1-5 carbon atoms and optionally substituted by halogen or aryl comprising 6-10 carbon atoms).

    Abstract translation: PCT No. PCT / HU86 / 00066 Sec。 371日期1987年8月7日 102(e)日期1987年8月7日PCT申请日1986年12月9日PCT公布。 公开号WO87 / 03594 日期:1987年6月18日本发明涉及通式I的新的6-氟-7-氯-1-甲基氨基-4-氧代-1,4-二氢 - 喹啉-3-羧酸/硼酸酐, 图像(I)(其中R和R1代表卤素;包含2-6个碳原子并任选被卤素取代的脂族酰氧基;或包含7-11个碳原子的芳族酰氧基)。 通式I的新化合物是可用于制备抗菌剂6-氟-1-甲基氨基-7-(4-甲基 - 哌嗪子基)-4-氧代-1,4-二氢 - 喹啉线衍生物的有价值的中间体, 3-羧酸。 通式I的新化合物可以通过使式II的化合物(II)或通式III的化合物(III)(其中R 2代表包含1-4个碳原子的烷基) 原子)与式IV的氢氟硼酸盐HBF 4 / IV /或通式V BX 3 / V /(其中X表示氟,氯或溴)的三卤化硼硼烷或其与醚或硼烷衍生物形成的络合物 通式VI(VI)(其中R 3,R 4和R 5代表包含1-5个碳原子并且任选地被卤素或包含6-10个碳原子的芳基取代的烷基)。

    Norfloxacin intermediate
    2.
    发明授权
    Norfloxacin intermediate 失效
    诺氟沙星中间体

    公开(公告)号:US4803274A

    公开(公告)日:1989-02-07

    申请号:US105298

    申请日:1987-08-07

    CPC classification number: C07F5/04

    Abstract: The invention relates to a process for the preparation of compounds of the Formula I ##STR1## (wherein R and R.sup.1 stand for an aliphatic acyloxy group comprising 2-5 carbon atoms and optionally substituted by halogen or for an aromatic acyloxy group comprising 7-11 carbon atoms), which comprises reacting a compound of the general Formula II ##STR2## (wherein R.sup.2 stands for hydrogen or alkyl comprising 1-4 carbon atoms) with a boron derivative of the Formula III ##STR3## (wherein R.sup.3, R.sup.4 and R.sup.5 stand for an alkyl group comprising 1-4 carbon atoms and optionally substituted by halogen or for an aryl group comprising 6-10 carbon atoms).The new compounds of the general Formula I are useful pharmaceutical intermediates.

    Abstract translation: PCT No.PCT / HU86 / 00068 Sec。 371日期1987年8月7日 102(e)日期1987年8月7日PCT申请日1986年12月9日PCT公布。 第WO87 / 03595号公报 日本1987年6月18日。本发明涉及制备式I化合物(I)的方法(其中R和R 1代表包含2-5个碳原子并任选被卤素取代的脂族酰氧基 或包含7-11个碳原子的芳族酰氧基),其包括使通式II的化合物(II)(其中R 2表示氢或包含1-4个碳原子的烷基)与式 式III(III)(其中R3,R4和R5代表含有1-4个碳原子的烷基,任选被卤素取代或含有6-10个碳原子的芳基)。 通式I的新化合物是有用的药物中间体。

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