SK140093A3 - Method of preparation 1-substituted 6-flourine-4-oxo-7- (1-piperazinyle)-1,4-dihydroquinoline-3-carboxylic acid and intermediate products - Google Patents
Method of preparation 1-substituted 6-flourine-4-oxo-7- (1-piperazinyle)-1,4-dihydroquinoline-3-carboxylic acid and intermediate products Download PDFInfo
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Oblasť technikyTechnical field
Predkladaný vynález je Z' oblasti organickej chémie a týka sa spôsobu prípravy biologicky aktívnej' zlúčeniny č-fluór-4-οχο-7-/l-piperazin,yl/-l, 4-dihyarochinolín-3-karboxylove j kyseliny substituovanej v colohe 1, všeobecného vzorca II, ^^jycooii HN.> Rj iThe present invention is in the field of organic chemistry and relates to a process for the preparation of the biologically active compound 4-fluoro-4-oxo-7- (1-piperazin-1-yl) -1,4-dihylaminoquinoline-3-carboxylic acid substituted in the composition 1. of formula (II)
alebo 2,4-difluoruór-4-oxo-7-/4οΐίη-3-karboxylát obecného vzorca I, kde R? znamená nižší alkyl, nižší cykloalkyl fenylt dalej' sa· týka nového intermediátu 6-fl -substituovaný-I-piperazinyl/-!,4 dihydrochir. bor diacetátu substituovaného v polohe 1, všeor 2,4-difluoruór-4-oxo-7- / 4οΐίη-3-carboxylate of the formula I, wherein R? It is lower alkyl, lower cycloalkyl, phenyl t further '· is a novel intermediate 6-fluoro-substituted-piperazinyl / - !, 4 dihydrochir. boron diacetate substituted in the 1-position, all
AcO· - OAcAcO · OAc
C00R2; kde R^ má vyššie uvedený význam a R^ znamená nižší·alkyl alebo voliteľne substituovaný fenyl, a spôsobu jeho prípravy.C00R 2; wherein R 6 is as defined above and R 6 is lower alkyl or optionally substituted phenyl, and a process for its preparation.
Zlúčeniny všeobecného vzorca II sú pou* liečbe záoalových chorôb. Rozsah ich účinnos :mé v lekárstve ori je veľmi široký, lebo pôsobia tak proti gräm-rozit baktériám.The compounds of formula II are useful in the treatment of inflammatory diseases. The scope of their efficacy : mine in ori medicine is very broad as they counteract the gram-born bacteria.
o m- n ega t í vr..y mo m- n ega tí vr..y m
Vznikla potreba poskytnúť nový spôsob prípravy biologicky aktívnych zlúčenín všeobecného vzorca II, ktorý umožní uskutočniť nukleofilnú substitúciu atómu halogéna sekundárnym amínom v polohe 7 východiskovej zlúčeniny 6-fluór-7-halogén-4-oxo-l,4-dihydrochinolín-3 karboxylát bor diacetátu substituovanej v polohe 1,There is a need to provide a novel process for the preparation of biologically active compounds of formula II which allows nucleophilic substitution of the halogen atom with a secondary amine at the 7-position of the starting compound 6-fluoro-7-halo-4-oxo-1,4-dihydroquinoline-3 carboxylate boron diacetate in position 1,
kde X znamená fluór alebo chlór, má vyššie uvedený význam, v miernych reakčných podmienkach, aby sa znížilo množstvo substituovaného oroduktu v polohe 6.wherein X is fluoro or chloro is as defined above, under mild reaction conditions, to reduce the amount of substituted oroduct at the 6-position.
Doterajší stav technikyBACKGROUND OF THE INVENTION
Syntéza zlúčenín všeobecného vzorca II je popísaná v niekoľkých patentoch, napr. substitúcia chlóru v polohe 7 1-alkyl-6-fluór-7-halogéη-4-oxo-l,4 dihydrochinolín-J-karboxylovej kyseliny cioerazínom uvedená v JF 66686/1979 a JF 33453/1980, v DE 284Ό910 s DE 330·°909, alebo hydrolýza v polohe 3 alkylesteru 1-alkyl -6-fluór-7-/l-pi cerazin”l/-4-oxo-l, 4-dí i.ydrochinolín-3-karboxylovej kyseliny uvedená v SE 690223.The synthesis of compounds of formula II is described in several patents, e.g. the substitution of chlorine at the 7-position by 1-alkyl-6-fluoro-7-halo-4-oxo-1,4-dihydroquinoline-J-carboxylic acid by cioerazine in JF 66686/1979 and JF 33453/1980, in DE 284-910 with DE 330 · ° 909, or hydrolysis at the 3-position of the alkyl ester of 1-alkyl-6-fluoro-7- (1-piperazoline) -1,4-oxo-1,4-dihydroquinoline-3-carboxylic acid disclosed in SE 690223.
Fre všetky tieto spôsoby je charakteristické, že cubstitučné reakcie prebiehajú efektívne až pri teplotách nad 100°C, čo vedie k veľkému podielu komreti t ívr.e j reakcie v polohe 6.In all these processes, it is characteristic that the cubic reactions take place efficiently only at temperatures above 100 ° C, resulting in a large proportion of the three reactions in the 6-position.
.-3V ES 9001782 ;je popísaná nukleoí’ilná substitúcia na chelátoch boru, hliníka a kremíka, ale produkt, substitúcie nebol izo lovený a rovno bola uskutočnená hydrolýza nn biologicky aktívnu zlúčeninu.. V HU 1905/87 je .popísaná nukleofilná substitúcia halogénu v polohe 7 na chelatačnom komplexe boru pri teplote nad 100°C. Aj' v tomto prípade nebol produkt substitúcié izolovaný a rovno bola uskutočnená hydrolýza.The nucleophilic substitution on boron, aluminum and silicon chelates is described, but the product, the substitution was not isolated and the hydrolysis of the low biologically active compound was carried out. position 7 on the boron chelating complex at a temperature above 100 ° C. Again, the substitution product was not isolated and hydrolysis was performed directly.
Podstata vynálezuSUMMARY OF THE INVENTION
Frvým predmetom vynálezu je spôsob prípravy 6-fluór-4-oxo-7-/l-piperazinyl/-l,4-dihydrochinolí η-3-karbox.ylove j kyseliny substituovanej v polohe 1, všeobecného vzorce IIA fourth object of the invention is a process for the preparation of 6-fluoro-4-oxo-7- (1-piperazinyl) -1,4-dihydroquinoline-3-carboxylic acid substituted in the 1-position of formula II
kde znamená nižší alkyl, nižší cykloalkyl alebo 2,4-difluórfenyl, alebo prípravy jej farmaceutický prijateľnej adičnej solwherein it is lower alkyl, lower cycloalkyl or 2,4-difluorophenyl, or the preparation of a pharmaceutically acceptable addition salt thereof
I.I.
napr. hydrochloridu alebo laktátu a príslušných hydrátov, chara teristický tým, že zlúčenina všeobecného vzorca I,e.g. hydrochloride or lactate and the corresponding hydrates, characterized in that the compound of formula I,
I •' tI • t
AcO '^· /OAc '-BAcO '^ · / OAc' -B
_ ú _ kde má vyššie uveúcr.;.'· význam g znamená ::i voliteľne substituovaný fenyl je alkalický hyd.r vzniknutá zlúčeniny všeobecného vzorca Ή sú né na farmaceutický prijateľné adičné soli, rm alebo laktát a príslušné hydráty.where the above meaning is defined as meaning that optionally substituted phenyl is an alkali hydrate, the resulting compounds of formula (I) are pharmaceutically acceptable addition salts, rm or lactate, and the corresponding hydrates.
ilkyl alebo olyzovaná a • patine premenen. hydrochloridalkyl or lysed and patina transformed. hydrochloride
Alkalická Ivárolýza prebieha vo vodnom prostredí alebo v prostredí vodného etanolu napr. pôsobením roztoku alkalického hydroxidu / 10 X KOH alebo 10 % KaOH / pri teniete 50°C až do bodu varu, výhodne pri teplote varu reakčnej zmesi.The alkaline ivarolysis takes place in an aqueous medium or in an aqueous ethanol medium e.g. by treatment with an alkaline hydroxide solution (10 X KOH or 10% KaOH) at a temperature of 50 ° C to the boiling point, preferably at the boiling point of the reaction mixture.
Fo neutralizácii kyselinou, výhodne kyselinou octovou, obsahuje vzniknutý produkt / bez rurifik''cie / menej ako 0,5 % všetkých nečistôt.For neutralization with acid, preferably acetic acid, the resulting product (without rurification) contains less than 0.5% of all impurities.
Druhým predmetom vynálezu je nový intermediát ó-fluór-4-oxo-7-/4-subst i tuovaný-l-piperazinvl/-l,4-dibydrochinolín-j-karboxylst bor diacetát substituovaný v poloie 1, všeobecného vzorca ľ, vhodný1‘ako východisková latka pre vyš/;ie uvedený spôsob prípravy biologicky aktívnej zlúčeniny všeobecného vzorca II.A second object of the invention is a novel intermediate 6-fluoro-4-oxo-7- (4-substituted-1-piperazinyl) -1,4-dibydroquinoline-1-carboxylic acid diacetate substituted in Item 1 of formula (I '), suitable 1 'as a starting point for the above ; the process for preparing a biologically active compound of formula II.
Ďalším, predmetom vynálezu'je spôsob prípravy nového intermsdiátu všeobecného vzorca I, ktorý umožňuje uskutočniť nukleofilnú substitúciu v polohe 7 na č-fluór-7-halopén-4-oxo-l,4-dihyčrochinolín-3-karboxylát bor diacetátu substituovanom v polohe 1,. všeobecného vzorca III, piperazínom substituovaným v polohe 1, všeobecného vzorcaA further object of the invention is a process for the preparation of a novel intermsdiate of the formula I which enables nucleophilic substitution at position 7 to n-fluoro-7-halopen-4-oxo-1,4-dihydroquinoline-3-carboxylate boron diacetate substituted in position 1 ,. of the formula III, with piperazine substituted in the 1-position, of the formula
HH
N.N.
N'N '
CO 01-^2 kde P^2 má vyššie uve'ený význam.CO 2 - 2 wherein P 2 is as defined above.
Reakcia prebieha v prostredí organických rozpúšťadiel ako je napr. pyrid ín, cii metIculfoxid , čimetylfáramThe reaction is carried out in an organic solvent such as e j. pyridine, cii methylsulfoxide, cimethylfaram
-pyrrol i don, výhodne 1-rr.etyl-F-nyrrolidon, r?pyrrolidone, preferably 1-methyl-F-pyrrolidone;
d, 1-metyl-lt. e plo t ách 0 až v 1-metyl-kodín, bez vzniku boru. Fri. reak40°C, výbočné ľ5d, 1-methyl-1t. 0 to 1-methyl-codin, without boron formation. Fri. Reaction 40 ° C, exc
Fri tFri t
-ryrrolidone je reakcia ukončen vedľajších rrodumtov a tiež bez c b. t o teplôt á( za 10 až Ip hyčrolýzy o o?.-ryrrolidone is a reaction terminated by rhumum and also without c b. t o temperature (for 10 to Ip hyolysis by o ?.
čných teplotách nad. 40'C je uč zjavný rozk rajúcou teplotou rozklad rýchlo pokračuje. 3-karboxylová kyselina je podstatne menej filná substitúcia tu-'prebieha až pri teplo lač soli boru, so s Fročukt rozkladu, reaktívna a nukleotách nad ICO0C.temperatures above. 40 ° C is apparent by the melting temperature decomposition proceeds rapidly. The 3-carboxylic acid is substantially less flux substitution here only at heat-boron salt, with decomposition, reactive and nucleotides above ICO 0 C.
túhere
Izolácia získanej zlúčeniny všeobecnúho jednoduchá, co v zrážaní etanolom sa získa č šia purifikácia nie je potrebná.Isolation of the compound obtained in general is simple, since no further purification is required in ethanol precipitation.
vzorca I je veľmi stá látka a dalZlúčenia všeobecného vzorca I je roučívar vá latka pre prípravu zlúčeniny všeobecného vi vanej forme alebo in situ.of Formula I is a very centenary compound and other compounds of Formula I are a flowable compound for the preparation of a compound of the general formula or in situ.
ako východiskorca II v izoloVšetkv reakčné činidlá sú buč komerčne dostupné, alebo ich možno získa.' iko je tu uvedené.As starting material II in the isolation, all reagents are either commercially available or can be obtained. iko is listed here.
Nasledujúca vy n á 1 e z u, X, F-, - a eakčn.á schéma ilustruje ob R^ majú vyššie uvedený' výz d v a s p ô s o by tohto ·: í -71The following figure 1, X, F, -, and the reaction scheme illustrates both R 2 have the above-mentioned meaning and are as follows:
......9...... 9
IIII
Nasledujúce príklady popisujú vynález podrobnejšie, ale žiadnym spôsobom ho nemajú obmedziť.The following examples describe the invention in more detail, but do not limit it in any way.
Príklady realizácie vynálezuDETAILED DESCRIPTION OF THE INVENTION
Fríklad 1 l-c.yklorropyl-6-flaór-4-oxc-7-/4-karboe t oxy-l-pi nerazí ny 1 /-1,4-dihydrochi rolín-ú-karbox’-lát bór diacetátEXAMPLE 11 1-Cyclorropyl-6-fluoro-4-oxo-7- (4-carbonyloxy-1-pi) imidazin-1, l-1,4-dihydroquinoline-8-carboxylic acid boron diacetate
- c.y kl o pro py 1-6-f1 uó r-4-οχο -7 - chló r-l, 4 -di hyd r o c hi nol í n- 3 -karboxylst bór tíiacetát. /10 g; 0,0244 mólu/ a 1-karboetoxypioerazín /15,44 g; 0,0977 mólu/ boli suspendované v l-metyl-2-ryrrolidone /40 ml/ a zmes miešaná pri teplote 30°C 12 hodín. Po ukončení reakcie bol do reakčnej zmesi pridaný absolútny etanol /60 ml/ a zmes bola miešaná pri laboratórnej teplote hodiny. Zrazenina bola odfiltrovaná pod tlakom, premytá etanolom a sušená vo vákuu pri SO°C. Filtrát bol ochladený na 0 až 5°C, vzniknutá zrazenina bola odfiltrovaná pod tlakom, suspendovaná v zmesi l-m.etyl-2-pyrrolidon/etanol /2:1/ m.acerovaná 2 hodiny, odfiltrovaná pod tlakom.a sušená. Frodukty boli spojené. Výťažok chromátograficky čistého l-cj/klonropyl-6-fluór-4-oxo-7-/4-kar bo e t oxy-l-pi perazinyl/-! , 4-dikydrochinolín-3karbox^lát bór diacetátu bol 10,75 g /63 %/, b.t. 235 až 240°C.- C 1-6 -fluoro-4-fluoro-7-chloro-1,4-dihydro-quinoline-3-carboxylic acid boron trifluoroacetate. / 10 g; 0.0244 moles and 1-carboethoxypioerazine (15.44 g); 0.0977 moles) were suspended in 1-methyl-2-pyrrolidone (40 ml) and the mixture stirred at 30 ° C for 12 hours. After completion of the reaction, absolute ethanol (60 mL) was added to the reaction mixture, and the mixture was stirred at room temperature for one hour. The precipitate was filtered off under pressure, washed with ethanol and dried under vacuum at 50 ° C. The filtrate was cooled to 0-5 ° C, the precipitate formed was filtered off under pressure, suspended in 1-methyl-2-pyrrolidone / ethanol / 2: 1 / m., Stirred for 2 hours, filtered under pressure and dried. Fractions were combined. Yield of chromatographically pure 1-cis (clonopropyl-6-fluoro-4-oxo-7- (4-carboxy-1-piperazinyl) -). The 4-dicydroquinoline-3-carboxylate boron diacetate was 10.75 g (63%), m.p. 235 DEG-240 DEG.
Scektroskopické údaje:Secroscopic data:
1___1___
H NMR spektrum /C·? ^COOH, TMS/ /zaznamenané r.a prístroji 300 MHz/rH NMR Spectrum: COOH, TMS / / recorded at 300 MHz / r
5CH2/cyklonropvl/ ~ //m’ ^“θ^ζ, 2H/, = 1»30 /t, J=8Hz, 3H/’ 6CK2/cyklcrrooyl/ = ^52 /rn’ J=8Kz’ 2H/’ yCH3 = 2’03 /s’6H/’ ^CH2/oi perazinyl/ = 3,42 /ra’ 4K/’ ďCH2 /piperazinyl/ = 3,74 /m, 4H/, ďCp£/cyvi 0r>r0cyi/ 3,73 /m, J=8Hz, In/, <5QCR2 = 4,^ /o, J=8Hz, 2H/, δ & = 7,48 ppm /d, 3=βΗζ, 1H/, 5 = 8,OS /d,5CH2 / cyklonropvl / ~ // m '^' ^ ζ θ, 2H /, = 1 »30 / t, J = 8 Hz, 3 H / '6 C K2 / cyklcrrooyl / = 52 ^ / rn' J = 8Kz '2 H / 's 2 = CH 3' 03 / s '6 H / ^ CH2 / oi piperazinyl / = 3.42 / r "4K /' CH 2 d / piperazinyl / = 3.74 / m, 4H /, Cp £ d / cy vi 0 r> r0cy i / 3.73 / m, J = 8Hz, In /, <5 QCR2 = 4, ^ / o, J = 8Hz, 2H /, δ & = 7.48 ppm / d, 3 = βΗζ, 1H / δ = 8, OS / d,
J=ľ4,3Kz, 1H/, <ľH5= 9,0 ppm /s, 1H/.J = 14.3Kz, 1H), <1> H5 = 9.0 ppm (s, 1H).
Infračervené spektrum rInfrared spectrum r
1700, 1630, 14^0, 1 370, 1275, 1240, 1060, 960 cm-1.1700, 1630, 1440, 1370, 1275, 1240, 1060, 960 cm -1 .
Príklad 2 l-etyl-6-fluór-4-oxo-7-/4-karboe toxy-1 -pi perazinyl/-!, 4-dihycro chinolín-3-karboxylát bór diacetátExample 2 1-ethyl-6-fluoro-4-oxo-7- (4-carboxy-1-piperazinyl) -1,4-dihydro-quinoline-3-carboxylate boron diacetate
1-e tyl-c-fluór-4-oxo-7-chlór-1,4-dihydrochinolín-3-karbox'.· lát bór diacetát /2,37 g; 0,006 mólu/ a 1-karboetoxypirerazín /3,78 p; 0,024 mól.u/ boli suspendované v 1-metvl-2-pyrrolitíone /9,5 ml/ a zmes bola miešaná pri 30°C 9 hodín. Po ukončení reakcie bol do reakčnej zmesi pridaný absolútny etanol /19 ml/ a zmes bola miešaná pri laboratórnej' teplote 2 hodiny. Získaný produkt bol odfiltrovaný rod tlakom,, premytý etanolom a sušený, vo vákuu rri 80°0 s výťažkom 2,7 g /87 %/ l-etyl-6-fluór-4-oxo-7-/4-karboetoxy-l-pi perezin.vl/-l, 4-cinydrocni no i ίη-3-karooxylát bór čiacetátu, b.t. 235 až 23S°C.1-ethyl-c-fluoro-4-oxo-7-chloro-1,4-dihydroquinoline-3-carboxylate boron diacetate / 2.37 g; 0.006 moles and 1-carboethoxypirerazine (3.78 µm); 0.024 moles were suspended in 1-methyl-2-pyrrolithione (9.5 ml) and the mixture was stirred at 30 ° C for 9 hours. After completion of the reaction, absolute ethanol (19 mL) was added to the reaction mixture, and the mixture was stirred at room temperature for 2 hours. The product obtained was filtered by pressure, washed with ethanol and dried under vacuum at 80 DEG C. in a yield of 2.7 g (87%) of 1-ethyl-6-fluoro-4-oxo-7- (4-carboethoxy-1-). in perezine.vl / -1,4-cinydrocin iodine 3-carooxylate boric acid, bt 235 DEG-23 DEG.
Spektroskopické údaje:Spectroscopic data:
1^1 →
H NMR spektrum /CFjCOOE, TMS/ /zaznamenané na stroji 60 MHz/:H NMR Spectrum (CF3COOE, TMS) (recorded on a 60 MHz machine):
= 1,53 /t, J=7Hz, 3H/, SCH3 = 1.53 (t, J = 7Hz, 3H), S CH3
2,4 /s, 6H/, ďrpí2 /rireraziny1/ /o, J=7Hz, 2H/, er0CH2 = 5,03 /q, =1,97 /t,J=7Hz, 3K/, 4,0 /m, 8H/, ďpsTQp;2 ~2.4 / s, 6 H /, ďrpí2 / rireraziny1 / / o, J = 7 Hz, 2H /, black 0CH2 = 5.03 / q, = 1.97 / t, J = 7 Hz, 3H /, 4.0 / m, 8H, dp with TQp;
J=7Hz, 2H/, <5\;s = 7,7 5CH3 = 4,53 /d, ď=6Hz, 1K/, ďfl5 = 8,4 /d,. J=12Hz, 1H/, ď =J = 7 Hz, 2H /, <5 \, p = 7.7 5 = CH 3 4.53 / d, d = 6 Hz, 1 K /, = 8.4 FL5 d / d ,. J = 12 Hz, 1 H, d =
9,6 ppm /s, 1H/.9.6 ppm (s, 1H).
t 9 ,t 9,
F NMR spektrum /CF3COOH, CFCi^/ /zaznamenané r.a prístrojiF NMR spectrum (CF 3 COOH, CFC 1) recorded on the instrument
MHz/:·MHz / ·
6^ = -114,0 pom /dd, J=12Hz;· 6Hz/..Delta. = -114.0 pom (dd, J = 12Hz; 6Hz).
Infračervené spektrum:Infrared spectrum:
1700, 1635, 1490, 1375, 1285,· 1240,1700, 1635, 1490, 1375, 1285, 1240,
1060, 970 zm.“1.1060, 970 changes. ” 1 .
Priklad 3 l-cyklopropyl-6-f luór-4-oxo-7-/l-piperazin.yl./-l, 4 dihydrochino1 ίη-3-karbox.ylcvá kyselina l-cvklopropyl-6-fluór-4-oxo-7-/4-karboetoxy-l-piperazinyl/-l,4-dihydrochinolín-3-karboxylát bor diacetát /10, g; 0,0185 mólu/ bol suspendovaný v 10 ľ· KOH /187 ml/ a zmes zohrievaná do varu 1,5 hodiny. Potom bola reakčná zmes ochladená na laboratórnu teclotu a pH upravené na 7,2 až 7,4 kyselinou octovou. Reakčná zmes bola miešaná äalších 30 minút, zrazenina odfiltrovaná pod tlakom, premytá vodou a sušená. Bola získaná kyselina 1-cykloprooy 1-6-fluór-4-oxo-7-/1-pi pera z i nyl/-1,4-d i hydrochi no lír.-3-karboxylová /5,95 g; 96 í/, b.t. 258 až 263°C.Example 3 1-cyclopropyl-6-fluoro-4-oxo-7- (1-piperazinyl) -1,4-dihydroquinoline-3-carboxylic acid 1-cyclopropyl-6-fluoro-4-oxo 7- (4-carboethoxy-1-piperazinyl) -1,4-dihydroquinoline-3-carboxylate bor diacetate / 10 g; 0.0185 moles (suspended in 10 ml of KOH (187 ml)) and heated to reflux for 1.5 hours. The reaction mixture was then cooled to room temperature and the pH adjusted to 7.2-7.4 with acetic acid. The reaction mixture was stirred for an additional 30 minutes, the precipitate was filtered off under pressure, washed with water and dried. 1-Cycloprooyl-6-fluoro-4-oxo-7- (1-piperazinyl) -1,4-dihydro-3-carboxylic acid (5.95 g) was obtained; 96%, m.p. Mp 258-263 ° C.
Príklad 4Example 4
Mor.ohytírát. hvdroehloridu 1-cy klopropyl-ó-fluór-ii-oxo-7-/l-pipera zin.yl/-l,4-dihydrochinolín-3-karboxylove j kyseliny l-cvklcpropyl-6-fluór-4-oxo-7-/4-karboetoxy-l-piperazinyl/-l,4-dihydrochinolín-3-karboxylát bór diacetát /3 g; 0,0056 mólu/ bol suspendovaný v 10 % KOH /56 ml/ a zmes zohrievaná do varu lr5 hodiny. Po ukončení reakcie bola pridaná kyselina chlorovodíková /8 ml/ a zmes bola zohrievaná na teplotu 80°C 30 minút. Potom bola reakčná zmes ochladená na laboratórnu teplotu, pridaný etanol /14 ml/ a reakčná zmes bola miešaná ôslších 30 minút. Vzniknutá zrazenina bola odfiltrovaná pod tlakom, premytá vodou a sušená do konštantnej hmotnosti s výťažkom monohydrátu hydrochloridu kyseliny/ l-cyklopropyl-6-fluór-4-oxo-7-/l-piperazinyl/-1 ,.4-dihydrochinolín-3-karboxyloveý /1,98 g·, 92 //, b. t. 282 ažMor.ohytírát. cy hvdroehloridu 1-cyclopropyl-o-fluoro and i-oxo-7- / l-piperazinyl zin.yl / -l, 4-dihydroquinoline-3-carboxylic acid hydrochloride L-cvklcpropyl-6-fluoro-4-oxo-7 - (4-carboethoxy-1-piperazinyl) -1,4-dihydroquinoline-3-carboxylate boron diacetate / 3 g; 0.0056 mol / suspended in 10% KOH / 56 ml / and the mixture was heated to reflux L R five hours. After completion of the reaction, hydrochloric acid (8 ml) was added and the mixture was heated to 80 ° C for 30 minutes. Then, the reaction mixture was cooled to room temperature, ethanol (14 mL) was added, and the reaction mixture was stirred for more than 30 minutes. The resulting precipitate was filtered off under pressure, washed with water and dried to constant weight to yield (1-cyclopropyl-6-fluoro-4-oxo-7- (1-piperazinyl) -1,4-dihydroquinoline-3-carboxylic acid hydrochloride monohydrate) / 1.98 g ·, 92 //, bt 282 to
J.J.
Príklad 5 l-etyl-6-fluór-4-oxo-7-/l-piperazinyl/-l, 4-dih.ydrochinolín-3-karboxylová kyselina l-etyl-6-fluór-4-oxo-7-/4-karboetoxy-l-piperazinyl/-l, 4-dihydrochir.olín-3-karboxlát bor diacetát /1,04 g; 0,002 mólu/ bol suspendovaný v 10 % KOH /16 ml/ a etanole /12 ml/ a zmes bola zohrievaná do varu 11'hodín. Potom bola reakčná zmes ochladená na 15°C, pH upravená na 7,2 až 7,4 15 £ kyselinou chlorovodíkovou a zmes bola miešaná ďalších 30 minút. Získaná zrazenina bola odfiltrovaná pod tlakom, premytá vodou a sušená do konštantnej' hmotnosti vo vákuovej sušiarni pri 1CO°C, s výťažkom kyseliny l-etyl-6-fluór-4-oxo-7~/l-piperazinyl/-l,4-dihydrochinolin-3-karboxylovej /0,6 g; 93 %/, b.t. 218 až 221°C.Example 5 1-ethyl-6-fluoro-4-oxo-7- (1-piperazinyl) -1,4-dihydroquinoline-3-carboxylic acid 1-ethyl-6-fluoro-4-oxo-7- / 4 -carboethoxy-1-piperazinyl / -1,4-dihydroquinoline-3-carboxlate boron diacetate / 1.04 g; 0.002 mol (was suspended in 10% KOH (16 ml) and ethanol (12 ml) and the mixture was heated at reflux for 11 hours. The reaction mixture was then cooled to 15 ° C, adjusted to pH 7.2-7.4 with 15% hydrochloric acid and stirred for an additional 30 minutes. The resulting precipitate was filtered off under pressure, washed with water and dried to constant weight in a vacuum oven at 10 ° C, yielding 1-ethyl-6-fluoro-4-oxo-7- (1-piperazinyl) -1,4- dihydroquinoline-3-carboxylic acid / 0.6 g; 93%, m.p. Mp 218-221 ° C.
?/- 1900 -93/ - 1900 -93
Claims (7)
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SI9200377A SI9200377A (en) | 1992-12-11 | 1992-12-11 | Process for the preparation of 1-substituted 6-fluoro-4-oxo-7-(1-piperazinyl)-1,4-dihydroquinoline-3-carboxilic acid, novel intermediate used in this process and process for its preparation |
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CA (1) | CA2111181A1 (en) |
CZ (1) | CZ284715B6 (en) |
EE (1) | EE9400277A (en) |
HR (1) | HRP931485A2 (en) |
HU (1) | HUT75319A (en) |
LT (1) | LT3084B (en) |
LV (1) | LV10863B (en) |
PL (1) | PL173784B1 (en) |
RU (1) | RU2127270C1 (en) |
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SE444566B (en) | 1977-09-20 | 1986-04-21 | Bellon Labor Sa Roger | 7-DIALKYLAMINE-6-HALOGEN-4-OXO-1,4-DIHYDROQINOLINE-3-CARBOXYLIC ACID, PROCEDURES FOR PREPARING THEREOF AND PHARMACEUTICAL PREPARATION OF THEREOF |
DE2747357A1 (en) | 1977-10-21 | 1979-04-26 | Bayer Ag | SUBSTITUTED PYRIMIDINYL (THIONO) (THIOL) PHOSPHOR (PHOSPHON) ACID ESTERS OR. -ESTERAMIDES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS INSECTICIDES AND ACARICIDES |
JPS5533453A (en) | 1978-08-31 | 1980-03-08 | Dainippon Pharmaceut Co Ltd | Preventive and remedy for infectious disease of fish |
JPS5762259A (en) | 1980-09-05 | 1982-04-15 | Kyorin Pharmaceut Co Ltd | Preparation of substituted quinolinecarboxylic acid derivative |
DE3308909A1 (en) | 1983-03-12 | 1984-09-13 | Bayer Ag, 5090 Leverkusen | BACTERICIDALS BASED ON CHINOLONIC CARBONIC ACID |
DE8812756U1 (en) | 1988-09-22 | 1988-12-01 | Weinschlauch Hemue Weinhandel Gmbh, 4000 Duesseldorf, De |
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1992
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1993
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- 1993-12-06 CZ CZ932643A patent/CZ284715B6/en not_active IP Right Cessation
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RU2127270C1 (en) | 1999-03-10 |
LT3084B (en) | 1994-11-25 |
CA2111181A1 (en) | 1994-06-12 |
SI9200377A (en) | 1994-06-30 |
HU9302940D0 (en) | 1993-12-28 |
HRP931485A2 (en) | 1995-04-30 |
PL173784B1 (en) | 1998-04-30 |
AT401648B (en) | 1996-10-25 |
CZ264393A3 (en) | 1994-07-13 |
ATA249793A (en) | 1996-03-15 |
HUT75319A (en) | 1997-05-28 |
PL301045A1 (en) | 1994-06-13 |
CZ284715B6 (en) | 1999-02-17 |
YU76593A (en) | 1996-07-24 |
EE9400277A (en) | 1996-04-15 |
LV10863A (en) | 1995-10-20 |
LTIP1558A (en) | 1994-06-15 |
LV10863B (en) | 1996-08-20 |
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