DE871012C - Process for the production of folinic acid - Google Patents

Process for the production of folinic acid

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Publication number
DE871012C
DE871012C DEL10401A DEL0010401A DE871012C DE 871012 C DE871012 C DE 871012C DE L10401 A DEL10401 A DE L10401A DE L0010401 A DEL0010401 A DE L0010401A DE 871012 C DE871012 C DE 871012C
Authority
DE
Germany
Prior art keywords
amino
folinic acid
acid
production
diamino
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEL10401A
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German (de)
Inventor
Helmuth Dr Nafziger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAUL LAPPE FA
Original Assignee
PAUL LAPPE FA
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 PAUL LAPPE FA filed Critical PAUL LAPPE FA
Application granted granted Critical
Publication of DE871012C publication Critical patent/DE871012C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D475/00Heterocyclic compounds containing pteridine ring systems
    • C07D475/02Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4
    • C07D475/04Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4 with a nitrogen atom directly attached in position 2

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

Description

Verfahren zur Herstellung von Folinsäure Die gebräuchlichsten Verfahren zur Synthese der Folinsäure [Pteroylglutaminsäure, p-(;-Amino-4.-ox3rpteridyl-6)-methyl-amino-benzoyl-gluLaminsäure] (I) bedienen sich, soweit sie nicht von Zwischenprodukten mit fertigem Pteridingerüst ausgehen, ausschließlich der Kondensation von verschiedenen Oxo- und Halogenderivaten von C3 Verbindungen, z. B. a, ß-Dibrompropionaldehy d, a, ß, ß-Tribrompropionaldehyd oder Dioxyaceton, mit z, 4, 5-Triamino-6-oxypyrimidin, der sogenannten Traubeschen Base (II). Diese Umsetzung kann in verschiedener Weise vor sich gehen, je nachdem, welche der aktiven Gruppen der C3 Verbindungen und welche der beiden Aminogruppen in 4- oder 5-Stellung der Traubeschen Base zuerst reagieren, wobei 6- oder 7-Derivate des Pteridins (IV) oder (V) nach einer der folgenden Gleichungen entstehen, in denen als C3 Verbindung u, ß-Dibrompropionaldehyd verwendet wurde. Die Ausbeuten an Folinsäure sind deshalb immer nur sehr mäßig und die Rohprodukte stark verunreinigt und infolgedessen schwierig zu isolieren.Process for the preparation of folinic acid The most common processes for the synthesis of folinic acid [pteroylglutamic acid, p - (; - Amino-4.-ox3rpteridyl-6) -methyl-aminobenzoyl-gluLamic acid] (I), if they do not use intermediates go out finished pteridine structure, excluding the condensation of various oxo and halogen derivatives of C3 compounds, z. B. a, ß-dibromopropionaldehyde, a, ß, ß-tribromopropionaldehyde or dioxyacetone, with z, 4, 5-triamino-6-oxypyrimidine, the so-called Traubean base (II). This reaction can take place in various ways, depending on which of the active groups of the C3 compounds and which of the two amino groups in the 4- or 5-position of the Traube's base react first, with 6- or 7-derivatives of pteridine (IV) or (V) result from one of the following equations, in which u, ß-dibromopropionaldehyde was used as the C3 compound. The yields of folinic acid are therefore always only very moderate and the crude products are heavily contaminated and consequently difficult to isolate.

Es wurde nun gefunden, daß man bei der Herstellung von Folinsäure die Reaktionsmöglichkeiten in erwünschter Weise einschränken und insbesondere die Bildung stellungsisomerer Nebenprodukte verhindern kann, wenn man 2, 4-Diamino-5-brom-6-oxypyrymidin (VI) mit p-(ß-Formyl-ß-amino-äthenyl)-amino-benzoyl-glutaminsäure (VII) umsetzt. Die Reaktion verläuft nach folgender Gleichung: Beispiel i 0,005 Mol (1,79) p-(ß-Amino-ß-formyl-äthenyl)-aminobenzoylglutaminsäure werden in 25 ccm Wasser gelöst und mit einer Lösung von 0,005 Mol (1,49) 5-Brom-2, 4-diamino-6-oxypyrimidin in o,oi Mol (io ccm) gesättigte Natriumbicarbonatlösung tropfenweise in io Minuten unter Rühren versetzt. Die Lösung wird kurz erhitzt. Sie zeigt eine hohe Aktivität gegen Streptococcus faecalis R.It has now been found that in the production of folinic acid, the reaction possibilities can be restricted in the desired manner and, in particular, the formation of positional isomeric by-products can be prevented if 2,4-diamino-5-bromo-6-oxypyrymidine (VI) is combined with p- (ß -Formyl-ß-amino-äthenyl) -amino-benzoyl-glutamic acid (VII) converts. The reaction proceeds according to the following equation: Example i 0.005 mol (1.79) p- (ß-Amino-ß-formyl-ethhenyl) -aminobenzoylglutamic acid are dissolved in 25 ccm of water and treated with a solution of 0.005 mol (1.49) 5-bromo-2,4 diamino-6-oxypyrimidine in 0.1 mole (10 cc) of saturated sodium bicarbonate solution is added dropwise over 10 minutes with stirring. The solution is heated briefly. It shows high activity against Streptococcus faecalis R.

Beispiel 2 Zu einer Lösung von 1,4 g 2, 4-Diamino-5-brom-6-oxy-pyrimidin in io ccm gesättigter Natriumbicarbonatlösung von 4o bis 5o° wurden 1,7 g p-(ß-Aminoß-formyl-äthenyl)-amino-benzoyl-glutaminsäure in io ccm Aceton allmählich eingetropft.Example 2 To a solution of 1.4 g of 2,4-diamino-5-bromo-6-oxy-pyrimidine 1.7 g of p- (β-amino-β-formyl-ethhenyl) -amino-benzoyl-glutamic acid were added to 10 cc of saturated sodium bicarbonate solution from 40 to 50 ° gradually dripped in 10 cc of acetone.

Beispiel 3 Das 50° warme Gemisch von 1,4 g 5-Brom-2, 4-diamino-6-oxy-pyrimidin und i,7 g p-(ß-Amino-ß-formyl-äthenyl)-amino-benzoyl-glutaminsäure in 50 ccm Wasser wird unter Rühren mit 50 ccm o,i n Natriumbicarbonatlö'sung tropfenweise versetzt. Die Lösung zeigt eine hohe Aktivität gegen Streptococcus faecalis R.Example 3 The 50 ° warm mixture of 1.4 g of 5-bromo-2, 4-diamino-6-oxy-pyrimidine and 1.7 g of p- (ß-amino-ß-formyl-ethhenyl) -amino-benzoyl- glutamic acid in 50 ccm of water is added dropwise while stirring with 50 ccm of sodium bicarbonate solution. The solution shows high activity against Streptococcus faecalis R.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Folinsäure, dadurch gekennzeichnet, daß man S-Brom-2, 4-diamino-6-oxypyrimidin mit p-(ß-Amino-ß-formyläthenyl)-amino-benzoyl-glutaminsäure unter Ringschluß umsetzt. PATENT CLAIM: Process for the preparation of folinic acid, characterized in that S-bromo-2,4-diamino-6-oxypyrimidine is reacted with p- (ß-amino-ß-formylethenyl) -amino-benzoyl-glutamic acid with ring closure.
DEL10401A 1950-11-24 1951-10-20 Process for the production of folinic acid Expired DE871012C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT871012X 1950-11-24

Publications (1)

Publication Number Publication Date
DE871012C true DE871012C (en) 1953-03-19

Family

ID=3682521

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL10401A Expired DE871012C (en) 1950-11-24 1951-10-20 Process for the production of folinic acid

Country Status (1)

Country Link
DE (1) DE871012C (en)

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