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BE659237A - - Google Patents

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Publication number
BE659237A
BE659237A BE659237A BE659237A BE659237A BE 659237 A BE659237 A BE 659237A BE 659237 A BE659237 A BE 659237A BE 659237 A BE659237 A BE 659237A BE 659237 A BE659237 A BE 659237A
Authority
BE
Belgium
Prior art keywords
hydroxy
heated
methyl
diisobutoxy
desc
Prior art date
Application number
BE659237A
Other languages
French (fr)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR955807A priority Critical patent/FR1505313A/en
Priority to GB47650/63A priority patent/GB1007590A/en
Priority to FI2402/63A priority patent/FI42719B/fi
Priority to SE13524/63A priority patent/SE309238B/xx
Priority to CH976367A priority patent/CH464920A/en
Priority to NO63151151A priority patent/NO119142B/no
Priority to BE640906A priority patent/BE640906A/xx
Priority to CH1498263A priority patent/CH449617A/en
Priority to BR155240/63A priority patent/BR6355240D0/en
Priority to CH976467A priority patent/CH464921A/en
Priority to DEN24124A priority patent/DE1238476B/en
Priority to US380058A priority patent/US3267106A/en
Priority claimed from US380058A external-priority patent/US3267106A/en
Priority to SE592/65A priority patent/SE323961B/xx
Application filed filed Critical
Priority to US440621A priority patent/US3290315A/en
Priority to GB24400/65A priority patent/GB1035179A/en
Priority to NL6508117A priority patent/NL6508117A/xx
Priority to NL6508116A priority patent/NL6508116A/xx
Priority to FR22709A priority patent/FR91254E/en
Priority to DK336165AA priority patent/DK112657B/en
Priority to CH919565A priority patent/CH449618A/en
Priority to FR23220A priority patent/FR1532232A/en
Priority to FI1583/65A priority patent/FI44397B/fi
Priority to IT14922/65A priority patent/IT1051719B/en
Priority to US486583A priority patent/US3316147A/en
Publication of BE659237A publication Critical patent/BE659237A/fr
Priority to US486586A priority patent/US3482985A/en
Priority to BE670520A priority patent/BE670520A/xx
Priority to SE16906/67A priority patent/SE330169B/xx
Priority to CH370466A priority patent/CH467781A/en
Priority to SE3399/66A priority patent/SE343858B/xx
Priority to NO162114A priority patent/NO119178B/no
Priority to DE19661620083 priority patent/DE1620083A1/en
Priority to DK134766AA priority patent/DK114344B/en
Priority to NO16251066A priority patent/NO121339B/no
Priority to CY37067A priority patent/CY370A/en
Priority to OA52814A priority patent/OA114E/xx
Priority to OA52813A priority patent/OA02579A/en
Priority to NO16866067A priority patent/NO121401B/no
Priority to MY196762A priority patent/MY6700062A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/06Pumps peculiar thereto
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/26Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D215/54Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
    • C07D215/56Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M41/00Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/02Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
    • F02M41/06Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
    • F02M41/063Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating the distributor and rotary valve controlling fuel passages to pumping elements being combined

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Estera   alkyliques inférieurs d'acides   6,7-di(alkoxy   inférieur)-4- hydroxy-3-quinoléinecarboxyliques. 



   Le brevet principal n 640.906 concerne de nouveaux compo- ses   chimiques,   les esters   alkyliques     Inférieurs   d'acide 
5,7-di(alkoxy inférieur)-4-hydroxy-3-quinoléinecarboxyliques de ' formule: 
 EMI1.1 
 où R et R1 représentent des radicaux alkyles   Inférieurs   de 2 à 4 ¯ atomes de carbone et R2 représente un radical alkyle inférieur. 

 <Desc/Clms Page number 2> 

 



   La présente invention a pour objet des composés chimiques 
 EMI2.1 
 nouveaux correspondants la formule indiquée oï-dessuzo, dans      ' laquelle R etR1 représentent chacun un radical diisobutyle 
 EMI2.2 
 et B2 repr4sénte ' un radical méthyle ou othyle. 



  Ces nouveaux composés, le 67-dxisbu,toxy-/-hydroxy..3- qu.nolé.neoarbo5ry.ate de méthyle ou d'éthyle, peuvent être      obtenus suivant un ,des procédés décrits au brevet principal. 
 EMI2.3 
 



  De préférence (1) on réduit le 3,,-.d..sobutayn.trobenzène, (2) on met le produit de réduction obtenu sous (1) en contact ,¯.¯' avec un malonate de diméthylméthoxyméthylene ou de diéthylétho- xyméthylene (suivant le cas) en présence d'un agent de régulation thermique, et (3) on chauffe le mélange. 



  Ils se distinguent par une activité chimiothérapeutique   élevée   dans le traitement d'infections parasitaires chez les ani- maux, auxquels ils sont administrés en quantités de loin   inférieu..   res aux doses toxiques dans la lutte contre la coccidiose. Une composition convenant à cet effet comprend   0,001   à environ 0,1% en poids délester méthylique ou éthylique de l'acide 6,7- 
 EMI2.4 
 diisobutoxy-4-hydroxy-3-quinoléinecarboxylique en mélange avec un véhicule comestible. 



    EXEMPLE 1 -    
 EMI2.5 
 ¯ém7=Dii.sobu%oXY-±-hvdroxv-3-auinoléinecarboxYlate d'éthyle. 



  A une solution de 197 g (1,8 mole) de catéchol dans '  " 730 em3 d'éthanol on ajoute, sous atmosphère d'azote, 143 g (3,6 ' moles) d'hydroxyde de sodium en pastilles. Lorsque la formation du sel est achevée, on ajoute, goutte à goutte, entre 55 et 65 C. 
 EMI2.6 
 490 g (3,6 moles) de bromure deisobutyle. Le tube d'introduction d'azote est alors retiré et le mélange est chauffé au reflux pen- dant 17 heures. Le bromure de sodium est séparé par filtration et le filtrat est concentré.

   Le résidu goudronneux est repris dans 2 litres   d'eau   et extrait à   l'aide   de 2 litres, puis à   l'aide   de 1 litre   d'éther.   Les extraits éthérés sont combinés et lavés   deux.;   

 <Desc/Clms Page number 3> 

 fois avec 500 cm3 d'une solution d'hydroxyde de sodium à   la%,   puis deux fois avec 1 litre d'eau. Après séchage de la solution éthérée   sur,du   MgSO4, celle-ci est concentrée pour donner un résidu de 125 g (33%). 



   Tout en maintenant la température au-dessous de 25 C à l'aide d'un bain de glace, on ajoute, goutte à goutte, 105 g (0,47 mole) de 1,2=diisobutoxybenzène à une solution 1:1 d'eau et d'acide nitrique concentré. Après l'addition, le refroidissement est poursuivi jusqu'à ce que la réaction cesse d'être   exother-   mique. Le mélange est versé dans 2 litres d'eau glacée sous agita- tion. Le solide brun obtenu est filtré, lavé soigneusement avec de   l'eau   jusqu'à ce que les eaux de lavage ne soient plus acides, puis dissous dans du méthanol tiède et filtré. Une petite quantité d'eau est ajoutée pour provoques la cristallisation. Le produit re- cristallisé a un poids de   49   g   (39%)   et un point de fusion de 68 à 72 C. 



   A 2 g de Pd/C   à   5% contenant 50% d'eau, on ajoute 16 g (0,06 mole) de 3,4-diisobutoxynitrobenzène et 200 cm3 d'étha- nol. La quantité théorique d'hydrogène est consommée après agita- tion pendant 20 minutes en atmosphère d'hydrogène. Le catalyseur est séparé par filtration et le filtrat est ajouté à   13   g   (0,06   mo- le) de malonate de diéthyléthoxyméthylène et le mélange est chauffé au reflux en atmosphère d'azote pendant 1 heure.

   Par refroidissement usqu'à la température ambiante,   18   g   (74%)   de oristaux blancs de   l'anile   se séparent, P.F.77-79 C   Un   échantillon de 56 g de   l'anile   préparé de cette façon est introduit dans 600 cm3 de   "Dowtherm"   et la solution est chauffée au reflux pendant 1 heure. Le produit solide est lavé avec de l'hexane pour donner   31   g   (81%)   de produit fondant à 282-284 C. 



  Deux recristallisations dans le diméthylformamide donnent 25 g du produit recherché ayant un point de fusion de 288-291 C. 

 <Desc/Clms Page number 4> 

 
 EMI4.1 
 
<tb> 



  C <SEP> H <SEP> N
<tb> 
 
 EMI4.2 
 Calculé poUf '-20"27 N,15 666 7,53 3,8'i, 
 EMI4.3 
 
<tb> Trouvé <SEP> 66,53 <SEP> 7,24 <SEP> 4,13
<tb> 
   EXEMPLE 2 -    
 EMI4.4 
 fi.. 7-Diisobutoxv-A-hvdroxv-3-aumoléme.carboxYlate de méthyle 1', fU-1158). 



  Aune solution de 3#4-dilsobutoxyanlline., on ajoute T 41 g de malonate de diméthylmêthoxyméthylène. La solution est chauffée au reflux pendant 2 heures et concentrée sous vide pour obtenir un résidu visqueux. Le résidu est chauffé au bain 
 EMI4.5 
 de vapeur et ajouté à 800 em3 de udowthermu bouillant.La solution est chauffée à l'ébullition pendant 20 minutes, puis'refroidie. 



   Le produit est filtré, lavé avec du puis avec de   . l'acétone   et séché. Le rendement en produit recherché brut est de 36 g   (44%)'   Une suspension du produit dans 250 cm3 de méthanol' est chauffée à   l'ébullition   pendant 5 minutes et filtrée à chaud pour donner 35 g de produit ayant un point de fusion de 278-281 C. 



   R E VE N D I C A T  IONS.   



   Ester   alkylique   inférieur   d'un   acide 6,7-di(alkoxy 
 EMI4.6 
 inférieur)-4-hydroxy-3-QuiRolélneearboxylique suivant le brevet principal n 610.g06, de formule! 
 EMI4.7 
 dans laquelle R et R1 représentent chacun un radical   diisobutyle   et R2 représente un radical méthyle ou éthyle. 

**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.



   <Desc / Clms Page number 1>
 



    Lower alkyl estera of 6,7-di (lower alkoxy) -4-hydroxy-3-quinolinecarboxylic acids.



   Principal Patent No. 640,906 relates to new chemicals, the Lower Alkyl Esters of Acid.
5,7-di (lower alkoxy) -4-hydroxy-3-quinolinecarboxylics of the formula:
 EMI1.1
 where R and R1 represent Lower alkyl radicals of 2 to 4 ¯ carbon atoms and R2 represents lower alkyl radical.

 <Desc / Clms Page number 2>

 



   The present invention relates to chemical compounds
 EMI2.1
 new correspondents the indicated formula oï-dessuzo, in which R andR1 each represent a diisobutyl radical
 EMI2.2
 and B2 represents a methyl or othyl radical.



  These new compounds, methyl or ethyl 67-dxisbu, toxy - / - hydroxy..3- qu.nolé.neoarbo5ry.ate, can be obtained by one of the processes described in the main patent.
 EMI2.3
 



  Preferably (1) the 3 ,, -. D..sobutayn.trobenzene is reduced, (2) the reduction product obtained under (1) is brought into contact, ¯.¯ 'with a dimethylmethoxymethylene or diethylétho- malonate. xymethylene (as appropriate) in the presence of a heat regulating agent, and (3) the mixture is heated.



  They are distinguished by high chemotherapeutic activity in the treatment of parasitic infections in animals, to which they are administered in quantities far below the toxic doses in the control of coccidiosis. A composition suitable for this purpose comprises 0.001 to about 0.1% by weight of the methyl or ethyl ester of 6,7- acid.
 EMI2.4
 diisobutoxy-4-hydroxy-3-quinolinecarboxylique mixed with an edible vehicle.



    EXAMPLE 1 -
 EMI2.5
 ¯em7 = Dii.sobu% oXY- ± -hvdroxv-3-auinolinecarboxYlate of ethyl.



  To a solution of 197 g (1.8 mol) of catechol in 730 em3 of ethanol is added, under a nitrogen atmosphere, 143 g (3.6 moles) of sodium hydroxide in pellets. salt formation is complete, we add, drop by drop, between 55 and 65 C.
 EMI2.6
 490 g (3.6 moles) of deisobutyl bromide. The nitrogen introduction tube is then removed and the mixture is heated at reflux for 17 hours. The sodium bromide is separated by filtration and the filtrate is concentrated.

   The tarry residue is taken up in 2 liters of water and extracted with 2 liters, then with 1 liter of ether. The ethereal extracts are combined and washed two .;

 <Desc / Clms Page number 3>

 times with 500 cm3 of sodium hydroxide solution at%, then twice with 1 liter of water. After drying the ethereal solution over MgSO4, it is concentrated to give a residue of 125 g (33%).



   While maintaining the temperature below 25 C using an ice bath, 105 g (0.47 mol) of 1.2 = diisobutoxybenzene are added dropwise to a 1: 1 solution. water and concentrated nitric acid. After the addition, cooling is continued until the reaction ceases to be exothermic. The mixture is poured into 2 liters of ice-cold water with stirring. The brown solid obtained is filtered, washed thoroughly with water until the washings are no longer acidic, then dissolved in lukewarm methanol and filtered. A small amount of water is added to cause crystallization. The recrystallized product has a weight of 49 g (39%) and a melting point of 68-72 C.



   To 2 g of 5% Pd / C containing 50% water, 16 g (0.06 mol) of 3,4-diisobutoxynitrobenzene and 200 cm3 of ethanol are added. The theoretical quantity of hydrogen is consumed after stirring for 20 minutes in a hydrogen atmosphere. The catalyst is filtered off and the filtrate is added to 13 g (0.06 mol) of diethylethoxymethylene malonate and the mixture is refluxed in a nitrogen atmosphere for 1 hour.

   On cooling to room temperature 18 g (74%) of the white anile oristals separated, PF77-79 C. A 56 g sample of the anile prepared in this way was introduced into 600 cm3 of " Dowtherm "and the solution is heated at reflux for 1 hour. The solid product is washed with hexane to give 31 g (81%) of product melting at 282-284 C.



  Two recrystallizations from dimethylformamide give 25 g of the desired product having a melting point of 288-291 C.

 <Desc / Clms Page number 4>

 
 EMI4.1
 
<tb>



  C <SEP> H <SEP> N
<tb>
 
 EMI4.2
 Calculated for '-20 "27 N, 15 666 7.53 3.8'i,
 EMI4.3
 
<tb> Found <SEP> 66.53 <SEP> 7.24 <SEP> 4.13
<tb>
   EXAMPLE 2 -
 EMI4.4
 fi .. 7-Diisobutoxv-A-hvdroxv-3-aumoléme. 1 'methyl carboxylate, fU-1158).



  41 g of dimethylmethoxymethylene malonate are added to a solution of 3 # 4-dilsobutoxyanlline. The solution is heated at reflux for 2 hours and concentrated in vacuo to obtain a viscous residue. The residue is heated in a bath
 EMI4.5
 of steam and added to 800 em3 of boiling udowthermu.The solution is heated to the boil for 20 minutes, then re-cooled.



   The product is filtered, washed with then with de. acetone and dried. The yield of the desired crude product is 36 g (44%). A suspension of the product in 250 cm3 of methanol is heated to boiling for 5 minutes and filtered hot to give 35 g of product having a melting point of 278-281 C.



   R E VE N D I C A T IONS.



   Lower alkyl ester of a 6,7-di (alkoxy
 EMI4.6
 lower) -4-hydroxy-3-QuiRolélneearboxylique according to main patent No. 610.g06, of formula!
 EMI4.7
 in which R and R1 each represent a diisobutyl radical and R2 represents a methyl or ethyl radical.

** ATTENTION ** end of DESC field can contain start of CLMS **.

 

Claims (1)

2 - Procédé de préparation de l'ester méthylique ou EMI4.8 éthylique de l'acide 6, T-di.sobutoxy.,.hydror..3-quino.éâ,necarbo.-. xylique, caractérisé en ce que (1) on réduit le 3,4.-düsobutoy- nitrobenzène, (2) on met le produit de réduction obtenu sous (1) en contact avec un malonate de diméthylméthoxyméthyléne ou de. <Desc/Clms Page number 5> EMI5.1 diéthyléthoxymithylène (,suivant le cas) en présence d'un agent . bzz de régulation thermique, et (3) on chauffe le mélange. 2 - Process for preparing the methyl ester or EMI4.8 6, T-di.sobutoxy.,. hydror..3-quino.ea, necarbo.-. xylic, characterized in that (1) the 3,4.-düsobutoy-nitrobenzene is reduced, (2) the reduction product obtained under (1) is brought into contact with a dimethylmethoxymethylene or malonate. <Desc / Clms Page number 5> EMI5.1 diethylethoxymithylene (, as appropriate) in the presence of an agent. thermal regulation bzz, and (3) the mixture is heated. Composition ayant des propriétés antiooooidienne8 1% 1 '/, pouvant être administrée à des animaux, caractérisée en ce qu'elle comprend 0,001 à environ 0,1% en poids de l'ester méthylique EMI5.2 -ou éthylique de l'acide , 7d.sobutaxy--hydroacy.-qu.no,êiae-. ,.'z,1 carboxylique, en mélange avec un véhicule comestible. EMI5.3 Composition having antiooooid properties8 1% 1 '/, which can be administered to animals, characterized in that it comprises 0.001 to about 0.1% by weight of the methyl ester EMI5.2 -or ethylic acid, 7d.sobutaxy--hydroacy.-qu.no, êiae-. ,. 'z, 1 carboxylic, in admixture with an edible vehicle. EMI5.3 6t7''Diisobutoxy'--hydroxy-'3-uinoléinecarboxylate ' : f:1 de méthyle... Methyl 6t7 '' Diisobutoxy '- hydroxy-'3-uinolinecarboxylate': f: 1 ... 6,7-Diisobutoxy'--hydroxy-'3"quinoléinecarboxylate, d'éthyle. 6,7-Diisobutoxy '- hydroxy-'3 "quinolinecarboxylate, ethyl.
BE659237A 1961-02-08 1965-02-03 BE659237A (en)

Priority Applications (38)

Application Number Priority Date Filing Date Title
FR955807A FR1505313A (en) 1962-04-09 1963-12-03 Lower alkyl esters of 6, 7-dialkoxy (lower) -4-hydroxy-3-quinoline carboxylic acids and process for their preparation
GB47650/63A GB1007590A (en) 1962-04-09 1963-12-03 Lower alkyl esters of 6,7-di(lower)alkoxy-4-hydroxy-3-quinolinecarboxylic acid
FI2402/63A FI42719B (en) 1962-04-09 1963-12-04
SE13524/63A SE309238B (en) 1962-04-09 1963-12-05
DEN24124A DE1238476B (en) 1962-04-09 1963-12-06 Process for the preparation of lower alkyl esters of a 6,7-dialkoxy-4-hydroxy-3-quinolinecarboxylic acid which are suitable for combating parasitic infections in veterinary medicine
BE640906A BE640906A (en) 1962-04-09 1963-12-06
CH1498263A CH449617A (en) 1961-02-08 1963-12-06 Process for the preparation of new lower alkyl esters of 6,7-di- (lower-alkoxy) -4-hydroxyquinoline-3-carboxylic acids
BR155240/63A BR6355240D0 (en) 1962-04-09 1963-12-06 PROCESS FOR THE PREPARATION OF LOWER ACID ESTERS 6 7-DI-ALCOXI- (LOWER) -4-HYDROXY-QUINOLINO-CARBOXYLIC
CH976467A CH464921A (en) 1962-04-09 1963-12-06 Process for the preparation of new lower alkyl esters of 6,7-di- (lower-alkoxy) -4-hydroxy-quinoline-3-carboxylic acids
CH976367A CH464920A (en) 1962-04-09 1963-12-06 Process for the preparation of new lower alkyl esters of 6,7-di- (lower-alkoxy) -4-hydroxy-quinoline-3-carboxylic acids
NO63151151A NO119142B (en) 1962-04-09 1963-12-06
US380058A US3267106A (en) 1962-04-09 1964-07-02 Lower alkyl esters of 6, 7-di (lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
SE592/65A SE323961B (en) 1962-04-09 1965-01-16
US440621A US3290315A (en) 1962-04-09 1965-03-17 Esters of 6, 7-di (lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
GB24400/65A GB1035179A (en) 1962-04-09 1965-06-09 Esters of 6,7-di-substituted-4-hydroxy-3-quinolinecarboxylic acid
NL6508117A NL6508117A (en) 1962-04-09 1965-06-24
NL6508116A NL6508116A (en) 1962-04-09 1965-06-24
FR22709A FR91254E (en) 1962-04-09 1965-06-29 6,7-Dialkoxy (lower) -4-hydroxy-3-quinoline carboxylic acids, lower alkyl ester and process for their preparation
CH919565A CH449618A (en) 1961-02-08 1965-07-01 Process for the preparation of new lower alkyl esters of 6,7-di- (lower alkoxy) -4-hydroxyquinoline-3-carboxylic acids
DK336165AA DK112657B (en) 1962-04-09 1965-07-01 Process for the preparation of antimicrobially active 6,7-diisobutoxy-4-hydroxy-3-quinolinecarboxylic acid esters.
IT14922/65A IT1051719B (en) 1962-04-09 1965-07-02 LOWER ALCHYL ESTERS
FR23220A FR1532232A (en) 1962-04-09 1965-07-02 Lower alkyl and lower alkenyl esters of 6, 7-dialkoxy and dialkenyloxy (lower) -4-hydroxy and acetoxy-3-quinoline carboxylic acids and process for their preparation
FI1583/65A FI44397B (en) 1962-04-09 1965-07-02
US486583A US3316147A (en) 1962-04-09 1965-07-27 Coccidial compositions containing lower alkyl esters of 6, 7-di(lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
US486586A US3482985A (en) 1962-04-09 1965-08-23 Method of making animal food
BE670520A BE670520A (en) 1962-04-09 1965-10-05
SE16906/67A SE330169B (en) 1962-04-09 1966-03-15
CH370466A CH467781A (en) 1961-02-08 1966-03-15 Process for the preparation of esters of 3-quinoline carboxylic acids
SE3399/66A SE343858B (en) 1962-04-09 1966-03-15
NO162114A NO119178B (en) 1962-04-09 1966-03-15
DE19661620083 DE1620083A1 (en) 1962-04-09 1966-03-16 Process for the preparation of lower alkyl esters of 6,7-di-alkoxy-4-hydroxy-3-quinolinecarboxylic acid
DK134766AA DK114344B (en) 1962-04-09 1966-03-16 Process for the preparation of therapeutically active alkyl or allyl esters of 6,7-dialkoxy-3-quinolinecarboxylic acids.
NO16251066A NO121339B (en) 1962-04-09 1966-04-06
CY37067A CY370A (en) 1962-04-09 1967-02-23 Esters of 6,7-di-substituted-4-hydroxy-3-quinolinecarboxylic acid
OA52814A OA114E (en) 1962-04-09 1967-03-15
OA52813A OA02579A (en) 1962-04-09 1967-03-15 Lower alkyl esters of 6,7-dialkoxy (lower) -4-hydroxy-3-quinoleine carboxylic acids and process for their preparation.
NO16866067A NO121401B (en) 1962-04-09 1967-06-20
MY196762A MY6700062A (en) 1962-04-09 1967-12-31 Ester of 6,7-di-substituted-4-hydroxy-3-quinolinecarboxylic acid

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US18580662A 1962-04-09 1962-04-09
US24293362A 1962-12-07 1962-12-07
US27285863A 1963-04-15 1963-04-15
US380058A US3267106A (en) 1962-04-09 1964-07-02 Lower alkyl esters of 6, 7-di (lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
BE8546 1965-02-03
US440621A US3290315A (en) 1962-04-09 1965-03-17 Esters of 6, 7-di (lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
US486583A US3316147A (en) 1962-04-09 1965-07-27 Coccidial compositions containing lower alkyl esters of 6, 7-di(lower) alkoxy-4-hydroxy-3-quinolinecarboxylic acid
US48658665A 1965-08-23 1965-08-23

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BE659237A true BE659237A (en) 1965-08-03

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