AT318824B - Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate - Google Patents

Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate

Info

Publication number
AT318824B
AT318824B AT858372A AT858372A AT318824B AT 318824 B AT318824 B AT 318824B AT 858372 A AT858372 A AT 858372A AT 858372 A AT858372 A AT 858372A AT 318824 B AT318824 B AT 318824B
Authority
AT
Austria
Prior art keywords
ketoglutarate
new
pyridoxamine
pyridoxal
preparation
Prior art date
Application number
AT858372A
Other languages
German (de)
Original Assignee
Made Labor Sa
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
Application filed by Made Labor Sa filed Critical Made Labor Sa
Priority to AT858372A priority Critical patent/AT318824B/en
Application granted granted Critical
Publication of AT318824B publication Critical patent/AT318824B/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen 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
    • C07D213/62Oxygen or sulfur atoms
    • C07D213/63One oxygen atom
    • C07D213/65One oxygen atom attached in position 3 or 5
    • C07D213/66One oxygen atom attached in position 3 or 5 having in position 3 an oxygen atom and in each of the positions 4 and 5 a carbon atom bound to an oxygen, sulphur, or nitrogen atom, e.g. pyridoxal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



   Die Erfindung betrifft ein Verfahren zur Herstellung von neuem   Pyridoxal-cx-ketoglutarat   oder neuen Pyri-   doxamin-a-ketoglutarat.   
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 
 EMI1.4 
 



   Das Verfahren gemäss der Erfindung zur Herstellung dieser neuen Verbindungen, die als Arzneimittel verwendbar sind, besteht darin, dass   (x-Ketoglutarsäure   und Pyridoxal oder Pyridoxamin getrennt in der geringstmöglichen Menge eines organischen oder anorganischen Lösungsmittels, vorzugsweise Äthanol, vorzugsweise durch Erwärmen, aufgelöst, dann gemischt, gegebenenfalls die erhaltene Lösung konzentriert und das Salz durch Abkühlen oder durch Zusatz eines andern Lösungsmittels ausgefällt wird. 



   Die Erfindung soll an Hand von Beispielen näher erläutert werden. 
 EMI1.5 
 de Mischung wurde auf den Siedepunkt erhitzt und erforderlichenfalls bei dieser Temperatur filtriert, um die Mischung von möglicherweise in Suspension vorliegenden Feststoffteilchen zu befreien. Die erhaltene Lösung wurde im Kühlschrank aufbewahrt und am folgenden Tag filtriert. Die Ausbeuten schwankten zwischen 70 und   800/0 ;   die Ausfällung kann durch Zusetzen von Äther erhöht werden. 



   Nach Umkristallisieren aus Äthanol wurden weisse Kristalle vom Fp. 127 bis   128 C   erhalten. 



   Analyse für   Cl ! H15 NOs :     ber. :   C 49, 85 H 4, 79 N 4, 47   gef. :   C 50, 26 H 5,53 N 4, 27 
Das Produkt ist in Wasser und in heissen niederen Alkoholen löslich. In unpolaren Lösungsmitteln ist es sehr wenig löslich. Das Verfahrensprodukt ergibt mit   Eisen- (III) -chlorid   eine blutrote Farbe und mit   Kupfer- (Il)..   



  - sulfat eine smaragdgrüne Farbe. 



   Obwohl Äthanol bevorzugt verwendet wird, kann das erfindungsgemässe Verfahren auch mit andern organischen und auch anorganischen Lösungsmitteln durchgeführt werden. 



     Beispiel 2 :   Herstellung des Pyridoxamin-a-ketoglutarats
Es wurden 146, 10 g   (1   Mol)   a-Ketoglutarsäure   in 300 ml heissem Äthanol gelöst und die so erhaltene Lösung mit einer heissen Lösung aus 168, 0 g   (1   Mol) Pyridoxamin in 550 ml Äthanol vereinigt. Die anfallende Mischung wurde auf den Siedepunkt erhitzt und erforderlichenfalls bei dieser Temperatur gefiltert, um die Mischung von möglicherweise in Suspension vorliegenden festen Substanzen zu befreien. Die erhaltene Lösung wurde bis zum folgenden Tag in einem Kühlschrank aufbewahrt und dann filtriert.

   Die Ausbeuten schwankten 
 EMI1.6 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
    ;ber. : C 47, 00   H   6, 02   N 8, 44   gef. :   C 47, 20 H 6, 00 N 8, 54    Magnetisches Kernresonanz-Spektrum (D O) : ri= 7, 40 bis 8, 12 (Methylgruppe des Pyridoxamins und Methylengruppe der Säure), 6,30 (Triplett, den   drei mit einer Methylengruppe, mit einem Stickstoff und mit einer Carboxylgruppe verbundenen tert. Wasser- 
 EMI2.2 
 
75(Wasserstoff entsprechend   der cx- Pyridingruppe)   TpM. 



   Das Produkt ist in Wasser und in heissen niederen Alkoholen löslich. In unpolaren Lösungsmitteln ist es sehr wenig löslich. Mit Eisen- (III)-chlorid ergibt das Verfahrensprodukt eine rotbraune Farbe. 



   Die   erfindungsgemäss   erhältlichen Produkte weisen wertvolle pharmazeutische Eigenschaften auf. Das Salz kann in pharmazeutischen Präparaten als solches oder in Wasser gelöst oder mir organischen oder anorganischen Basen neutralisiert verwendet   werden ; im   letzteren Fall liegen Doppelsalze vor. 



   Die erfindungsgemäss erhaltenen Verbindungen können zur Steigerung intellektueller Leistungen und zur Behandlung folgender Krankheiten verwendet werden : Änderungen des Charakters, der Sprache und des Verhaltens, Lernschwierigkeiten, Fehlverhalten und Lernverzögerungen im Schulalter, psychisch-physische Beschwerden, Neurasthenien und Neurosen, psychomotorsche Störungen (Gehschwierigkeiten usw., psychogene Appetitlosigkeit, mit Krämpfen verbundene Krankheiten, profilaktische Vor-Anästhesie und Erholung aus der Anästhesie, verschiedene Vergiftungserscheinungen mit Beeinträchtigung des zentralen Nervensystems, Trübungszustände, Erstaunenszustände und Komata verschiedener Ursachen (metabolisch, toxisch, traumatisch, meningoenzephalitisch und durch Gefässbeschädigungen), Schwindelzustände, Übelkeit und Erbrechen, akuter und chronischer Alkoholismus,

   Hepatitis und Zirrhose.



   <Desc / Clms Page number 1>
 



   The invention relates to a process for the production of new pyridoxal-cx-ketoglutarate or new pyridoxamine-a-ketoglutarate.
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 
 EMI1.4
 



   The method according to the invention for the preparation of these new compounds, which can be used as medicaments, consists in that (x-ketoglutaric acid and pyridoxal or pyridoxamine separately in the smallest possible amount of an organic or inorganic solvent, preferably ethanol, preferably by heating, then dissolved mixed, optionally concentrated the resulting solution and the salt is precipitated by cooling or by adding another solvent.



   The invention is to be explained in more detail by means of examples.
 EMI1.5
 de mixture was heated to the boiling point and, if necessary, filtered at this temperature in order to free the mixture from any solid particles which may be present in suspension. The resulting solution was kept in the refrigerator and filtered the following day. The yields varied between 70 and 800/0; the precipitation can be increased by adding ether.



   After recrystallization from ethanol, white crystals with a melting point of 127 to 128 ° C. were obtained.



   Analysis for Cl! H15 NOs: calc .: C 49.85 H 4, 79 N 4, 47 found. : C 50.26 H 5.53 N 4.27
The product is soluble in water and in hot lower alcohols. It is very sparingly soluble in non-polar solvents. The product of the process gives a blood red color with iron (III) chloride and with copper (II) ..



  - sulfate an emerald green color.



   Although ethanol is preferably used, the process according to the invention can also be carried out with other organic and also inorganic solvents.



     Example 2: Preparation of the pyridoxamine a-ketoglutarate
146.10 g (1 mol) of α-ketoglutaric acid were dissolved in 300 ml of hot ethanol and the solution thus obtained was combined with a hot solution of 168.0 g (1 mol) of pyridoxamine in 550 ml of ethanol. The resulting mixture was heated to the boiling point and, if necessary, filtered at this temperature in order to free the mixture from any solid substances which might be present in suspension. The resulting solution was kept in a refrigerator until the following day and then filtered.

   The yields varied
 EMI1.6
 

 <Desc / Clms Page number 2>

 
 EMI2.1
    ; ber. : C 47.00 H 6.02 N 8.44 found. : C 47, 20 H 6, 00 N 8, 54 Nuclear Magnetic Resonance Spectrum (DO): ri = 7, 40 to 8, 12 (methyl group of pyridoxamine and methylene group of acid), 6.30 (triplet, the three with one Methylene group, with a nitrogen and with a carboxyl group connected tert.water
 EMI2.2
 
75 (hydrogen corresponding to the cx pyridine group) TPM.



   The product is soluble in water and in hot lower alcohols. It is very sparingly soluble in non-polar solvents. With iron (III) chloride, the process product gives a red-brown color.



   The products obtainable according to the invention have valuable pharmaceutical properties. The salt can be used in pharmaceutical preparations as such or dissolved in water or neutralized with organic or inorganic bases; in the latter case, double salts are present.



   The compounds obtained according to the invention can be used to increase intellectual performance and to treat the following diseases: changes in character, language and behavior, learning difficulties, misconduct and learning delays in school age, psycho-physical complaints, neurasthenias and neuroses, psychomotor disorders (walking difficulties, etc. , psychogenic loss of appetite, diseases associated with cramps, profilactic pre-anesthesia and recovery from anesthesia, various symptoms of intoxication with impairment of the central nervous system, turbid states, states of amazement and comas of various causes (metabolic, toxic, traumatic, meningoencephalic and nausea, dizziness) and vomiting, acute and chronic alcoholism,

   Hepatitis and cirrhosis.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung von neuem Pyridoxal-ct-ketoglutarat oder neuen Pyridoxamin-cx-ketoglutarat, dadurch gekennzeichnet, dass a-Ketoglutarsäure und Pyridoxal oder Pyridoxamin getrennt in der geringstmöglichen Menge eines organischen oder anorganischen Lösungsmittels, vorzugsweise Äthanol, vorzugsweise durch Erwärmen, aufgelöst, dann gemischt, gegebenenfalls die erhaltene Lösung konzentriert und das Salz durch Abkühlen oder durch Zusatz eines andern Lösungsmittels ausgefällt wird. PATENT CLAIM: Process for the production of new pyridoxal-ct-ketoglutarate or new pyridoxamine-cx-ketoglutarate, characterized in that a-ketoglutaric acid and pyridoxal or pyridoxamine are dissolved separately in the smallest possible amount of an organic or inorganic solvent, preferably ethanol, preferably by heating mixed, optionally concentrated the resulting solution and the salt is precipitated by cooling or by adding another solvent.
AT858372A 1972-10-06 1972-10-06 Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate AT318824B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT858372A AT318824B (en) 1972-10-06 1972-10-06 Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT858372A AT318824B (en) 1972-10-06 1972-10-06 Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate

Publications (1)

Publication Number Publication Date
AT318824B true AT318824B (en) 1974-11-25

Family

ID=3606797

Family Applications (1)

Application Number Title Priority Date Filing Date
AT858372A AT318824B (en) 1972-10-06 1972-10-06 Process for the preparation of new pyridoxal-α-ketoglutarate or new pyridoxamine-α-ketoglutarate

Country Status (1)

Country Link
AT (1) AT318824B (en)

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