CS273048B1 - Derivative of bis 4-quinolone-6-fluoro-3-carboxylic acid and method of its preparation - Google Patents

Derivative of bis 4-quinolone-6-fluoro-3-carboxylic acid and method of its preparation Download PDF

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CS273048B1
CS273048B1 CS535389A CS535389A CS273048B1 CS 273048 B1 CS273048 B1 CS 273048B1 CS 535389 A CS535389 A CS 535389A CS 535389 A CS535389 A CS 535389A CS 273048 B1 CS273048 B1 CS 273048B1
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fluoro
carboxylic acid
dihydro
ethyl
oxo
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CS535389A
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Czech (cs)
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CS535389A1 (en
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Libor Rndr Phmr Csc Novacek
Pavel Rndr Slanina
Jana Rndr Haklova
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Novacek Libor
Pavel Rndr Slanina
Jana Rndr Haklova
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Publication of CS273048B1 publication Critical patent/CS273048B1/en

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Abstract

The invention concerns a derivative of bis 4-quinolone-6-fluoro-3-carboxylic acid of formula I. The compound is prepared from 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(l-piperazinyl)-3-quinoline-carboxylic acid, which is condensed with 1-ethyl-7-chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinoline-carboxylic acid in a molar ratio of 1 : 1 to 1 : 5 in an environment of a high-boiling solvent. The reaction occurs at 120 to 240 degrees C in the presence of a base and the given derivative is isolated from the reaction mixture while hot. The compound has antibacterial action on Gram-positive and Gram-negative bacteria and is used in medicine.<IMAGE>

Description

Vynález se týká derivátu bis 4-chinolon-S-fluor-3-karboxyIové kyseliny, v němž dvě molekuly jsou spojeny v poloze 7 piperazinem a který má antibakteríálni účinek.The present invention relates to a bis 4-quinolone-5-fluoro-3-carboxylic acid derivative in which the two molecules are linked at the 7-position by piperazine and which has an antibacterial effect.

Deriváty 4-chinolon-2-karboxylových kyselin se používají v lékařství jako antibakteriálni sloučeniny. Oejich účinek Je založen na zásahu do syntézy deoxyribonukleové kyseliny tim způsobem, že inhibuji DNK-gyrázu, která Je odpovědná za tvorbu suparstruktury chromozomů.4-Quinolone-2-carboxylic acid derivatives are used in medicine as antibacterial compounds. Their effect is based on interfering with the synthesis of deoxyribonucleic acid in such a way that it inhibits DNA-gyrase, which is responsible for the formation of chromosome superstructure.

□ednou z velmi účinných sloučenin této struktury Je norfloxacin, l-ethyl-6-fluor-l,4-dihydro-4-oxo-7-(l-piperazinyl)-3-chinolinkarboxylová kyselina, který vzhledem k rychlé resorpci se používá především při léčeni:.infekci urogenitálního traktu.One of the most potent compounds of this structure is norfloxacin, 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7- (1-piperazinyl) -3-quinolinecarboxylic acid, which is mainly used due to its rapid resorption in the treatment of: an urogenital tract infection.

Podstatou vynálezu je nový derivát 4-chinolo-6-fluor-3-karboxylové kyseliny vzorce IThe present invention provides a novel 4-quinolo-6-fluoro-3-carboxylic acid derivative of the formula I

Vynález se dále týká způsobu přípravy sloučeniny vzorce I, jehož podstata spočívá v tom, že na l-athyl-6-fluor-l,4-dihydro-4-oxo-7-(l-piperazinyl)-3-chinolinkarboxYlovou kyselinu se působí l-ethyl-7-chlor-6-fluor-l,4-dihydro-4-oxo-3-chinolinkarboxylovou kyselinou v prostředí výšsvroucího rozpouštědla, 3 výhodou dimethylformamidu nebo difenyletheru, při teplotách 90 až 240 °C. Reakce se katalyzuje bázickými sloučeninami, s výhodou triethylaminem. Při reakci sa používá molárnl poměr obou komponent 1 : 1 až 1 s 5.The invention further relates to a process for the preparation of a compound of the formula I which comprises treating 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7- (1-piperazinyl) -3-quinolinecarboxylic acid. 1-ethyl-7-chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid in an environment of a rising solvent, preferably dimethylformamide or diphenyl ether, at temperatures of 90 to 240 ° C. The reaction is catalyzed by basic compounds, preferably triethylamine. In the reaction, a molar ratio of both components of 1: 1 to 1 s 5 is used.

Sloučenina vzorce I inhibuje růet grampozitivnlch i gramnegativních bakterií:The compound of formula I inhibits a variety of Gram positive and Gram negative bacteria:

Escharichia coli 0,75 ^ug/mlEscharichia coli 0.75 µg / ml

Staphllococeus aureus 30 yug/mlStaphllococeus aureus 30 yug / ml

Pseudomonas aeruginosa 30 y.ug/ralPseudomonas aeruginosa 30 y.ug/ral

Sloučenina vzorce I se vyznačuje velmi nepatrnou rozpustnosti a tim i malou reeorbovatelnosti a je proto vhodná pro použiti Jak v humánní tak i veterinární medicíně k léčeni infekci gestrointestinálniho traktu.The compound of formula I is characterized by very low solubility and thus low re-absorbability and is therefore suitable for use in both human and veterinary medicine for the treatment of gestrointestinal tract infections.

Může se používat též v různých farmaceuticky použitelných formách. Jako Jsou soli alkalických kovů nebo kovů alkalických zemin.·It can also be used in various pharmaceutically usable forms. Such as alkali metal or alkaline earth metal salts.

Příklad 1 l,4-bis(l-ethYl-6-fluor-l,4-dihydro-4-oxo-3-karboxY-7-chinolyl)-piperazinExample 1 1,4-bis (1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-carboxyl-7-quinolyl) -piperazine

4,8 g l-ethyl-6-fluor-l,4-dihydro-4-oxa-7-(l-piperazinyl)-3-chinalinkarboxylové kyseliny a 7;1 g l-athyl-7-chlor-6-fluor-l,4-dihydro-4-oxo-3-chinolinkarboxylové kyseliny se zahřívá v prostředí 70 ml dimethylformamidu a 3 g triethylaminu na 120 až 140 °C. Po 10 hodinách sa vzniklý l,4-bi8(l-ethyl-6-fluor-l,4-dihydro-4-oxo-3-karboxy-7-chinolyl)piparazin za horka odfiltruje a promyje vodou. Přečisti se rozpuštěním ve vodném roztoku louhu sodného nebo draselného a vysrážením kyselinou chlorovodíkovou. Získá se sloučenina rozkládající se nad 310 °C s výtěžkem 3,9 g.4.8 g of 1-ethyl-6-fluoro-1,4-dihydro-4-oxa-7- (1-piperazinyl) -3-quinalinecarboxylic acid and 7,1 g of 1-ethyl-7-chloro-6-fluoro The 1,4-dihydro-4-oxo-3-quinolinecarboxylic acid is heated in an atmosphere of 70 ml of dimethylformamide and 3 g of triethylamine to 120-140 ° C. After 10 hours, the 1,4-b8 (1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-carboxy-7-quinolyl) piparazine formed is filtered hot and washed with water. Purify by dissolution in aqueous sodium or potassium hydroxide solution and precipitation with hydrochloric acid. The product is decomposed above 310 ° C in a yield of 3.9 g.

Pro c28H2SN406F2 (552,5) vypočteno; 80,87 % C, 4,74 % H, 10,14 % N, 6,44 % Fj nalezeno: 60,4 % C, 4,7 % H, 9,7 % N, 6,6 % F.For c 28 H 26 N 4 O 6 F 2 (552.5) calculated; % C, 80.47;% H, 4.74;% N, 10.14;% F, 6.44. Found:% C, 60.4%;% H; 4.7%;

'H NMR spektrum (rozp. CFgCOOD) standard TMS)1 H NMR spectrum (CFgCOOD) (TMS standard)

3-j 1,81 (total 6H, t H-H > 7,4 Hz, CHg)3-j 1.81 (total 6H, tH-H > 7.4 Hz, CHg)

CS 273 048 BlCS 273 048 Bl

4,05 4.05 (total (total 8H, 8H, 3, 3, CH, piperazin) 3 CH, piperazine) 3 4,86 4.86 (total (total 4H, 4H, q. q. °H-H » 7,4 Hz, CH2)° HH »7.4 Hz, CH 2 ) 7,40 7.40 (total (total 2H, 2H, d. d. 4'3h_P » 7,2 Hz, arom. Hg) 4 '3 h _P »7.2 Hz, arom. H ( g ) 8,30 8.30 (total (total 2H, 2H, d, d, 30h_P “ 13,1 Hz, arom. H&) 3 0 h _P "13.1 Hz, arom. H &) 9,27 9.27 (total (total 2H. [0100] 2H. e, E, arom. Hc)arom. H (c )

PŘEDMĚT VYNÁLEZUSUBJECT OF THE INVENTION

Claims (2)

1. Derivát bis 4-chinolon-6-fluor-3-karboxylové kyseliny vzorce IA bis-4-quinolone-6-fluoro-3-carboxylic acid derivative of the formula I 2. Způsob přípravy sloučeniny vzorce I, vyznačující sa tím, ža při syntéze sa vychází z l-ethyl-S-fluor-1,4-dihydro-4-oxo-7-(l-pÍpsrazinyl)-3-chinolinkarboxylové kyseliny, která sa kondenzuje s l-ethyl-7-chlor-6-fluor-1,4-dihydro-4-oxo-3-chinolinkarboxylovou kyselinou v molárnim péměru 1 : 1 až 1 : 5 v prostředí výšavrouciho rozpouštědla, e výhodou dimethylformamidu nebo difenyletheru, při teplotě 120 až 240 °C za přítomnosti báze a za horka sa izoluje z reakční směsi.A process for the preparation of a compound of the formula I, characterized in that the synthesis starts from 1-ethyl-S-fluoro-1,4-dihydro-4-oxo-7- (1-piperazinyl) -3-quinolinecarboxylic acid, which condensed with 1-ethyl-7-chloro-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid in a molar diameter of 1: 1 to 1: 5 in a boiling solvent medium, preferably dimethylformamide or diphenyl ether, at 120 to 240 ° C in the presence of a base and hot isolated from the reaction mixture.
CS535389A 1989-09-19 1989-09-19 Derivative of bis 4-quinolone-6-fluoro-3-carboxylic acid and method of its preparation CS273048B1 (en)

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