CH263281A - Process for the preparation of a pteridine derivative. - Google Patents
Process for the preparation of a pteridine derivative.Info
- Publication number
- CH263281A CH263281A CH263281DA CH263281A CH 263281 A CH263281 A CH 263281A CH 263281D A CH263281D A CH 263281DA CH 263281 A CH263281 A CH 263281A
- Authority
- CH
- Switzerland
- Prior art keywords
- condensation product
- formic acid
- water
- amino
- crude
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 3
- 125000001042 pteridinyl group Chemical class N1=C(N=CC2=NC=CN=C12)* 0.000 title 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 20
- 239000007859 condensation product Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 10
- 235000019253 formic acid Nutrition 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- UGWUWNVTCLDEOG-ZDUSSCGKSA-N (2s)-2-[[4-[(2-amino-4-oxo-1h-pteridin-6-yl)methyl-formylamino]benzoyl]amino]pentanedioic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CN(C=O)C1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 UGWUWNVTCLDEOG-ZDUSSCGKSA-N 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 150000003195 pteridines Chemical class 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 235000013922 glutamic acid Nutrition 0.000 claims description 2
- 239000004220 glutamic acid Substances 0.000 claims description 2
- 229910052745 lead Inorganic materials 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims 1
- 238000001228 spectrum Methods 0.000 claims 1
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 description 6
- OVBPIULPVIDEAO-UHFFFAOYSA-N N-Pteroyl-L-glutaminsaeure Natural products C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)NC(CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229960000304 folic acid Drugs 0.000 description 3
- 235000019152 folic acid Nutrition 0.000 description 3
- 239000011724 folic acid Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- MLIWQXBKMZNZNF-KUHOPJCQSA-N (2e)-2,6-bis[(4-azidophenyl)methylidene]-4-methylcyclohexan-1-one Chemical compound O=C1\C(=C\C=2C=CC(=CC=2)N=[N+]=[N-])CC(C)CC1=CC1=CC=C(N=[N+]=[N-])C=C1 MLIWQXBKMZNZNF-KUHOPJCQSA-N 0.000 description 1
- SYEYEGBZVSWYPK-UHFFFAOYSA-N 2,5,6-triamino-4-hydroxypyrimidine Chemical compound NC1=NC(N)=C(N)C(O)=N1 SYEYEGBZVSWYPK-UHFFFAOYSA-N 0.000 description 1
- AEMOLEFTQBMNLQ-UHFFFAOYSA-N 3,4,5,6-tetrahydroxyoxane-2-carboxylic acid Chemical compound OC1OC(C(O)=O)C(O)C(O)C1O AEMOLEFTQBMNLQ-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000194035 Lactococcus lactis Species 0.000 description 1
- LGDSHSYDSCRFAB-UHFFFAOYSA-N Methyl isothiocyanate Chemical compound CN=C=S LGDSHSYDSCRFAB-UHFFFAOYSA-N 0.000 description 1
- 235000014897 Streptococcus lactis Nutrition 0.000 description 1
- 241001342522 Vampyrum spectrum Species 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- ACKFDYCQCBEDNU-UHFFFAOYSA-J lead(2+);tetraacetate Chemical compound [Pb+2].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O ACKFDYCQCBEDNU-UHFFFAOYSA-J 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- -1 p-amino-benzoyl Chemical group 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- CPNGPNLZQNNVQM-UHFFFAOYSA-N pteridine Chemical compound N1=CN=CC2=NC=CN=C21 CPNGPNLZQNNVQM-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D475/00—Heterocyclic compounds containing pteridine ring systems
- C07D475/02—Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4
- C07D475/04—Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4 with a nitrogen atom directly attached in position 2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Pteridinderivates. Wie gefunden -wurde, kann ein neues Pteridinderivat dadurch erhalten werden, dass 2-Amino-6-oxy-8-pteridylaldehyd mit p-Amino- benzoyl-1- (-f -) - glutaminsäure in Gegenwart von Ameisensäure bei einer Temperatur zwi schen 60 und 101 C kondensiert wird.
Aus dem Reaktionsgemisch kann das rohe Konden sationsprodukt durch Verdünnen, zum Beispiel mit Wasser oder Äther, oder, falls die Konden sation in überschüssiger Ameisensäure vorge nommen wurde, durch Abdestillieren der nicht umgesetzten Ameisensäure isoliert werden.
Eine vorteilhafte Aufarbeitungsmethode be steht darin, dass man das rohe Kondensations produkt in wässriger Suspension mit Mä- gnesiumoxyd behandelt, die erhaltene Lösung auf pH 7 stellt, filtriert, das Filtrat auf PH 3 bis 4 ansäuert, den Niederschlag abfil- triert und gegebenenfalls durch Umkristalli- sieren aus Wasser weiter reinigt.
Das neue Kondensationsprodukt besitzt die Zusammensetzung einer Formylfolsäure. Es stellt ein gelbes mikrokristallines Pulver dar, welches sich bei Temperaturen oberhalb 250 C zersetzt, ohne zu schmelzen. In Ameisen säure ist das Produkt gut löslich, in den üb lichen organischen Lösungsmitteln und Wasser ist es sehr scher löslich bis unlöslich. In Säuren und Alkalien wird es unter Salzbil- dung gelöst und fällt aus diesen Lösungen durch Einstellen des pH auf 3 bis 4 wieder aus.
Das Ammonium-, Alkali- und die Erdalkali- salze sind gut löslich, schwer löslich sind die Ni-, Ag-, Pb-, Zn-, Cu- und Hg-Salze. Das U.-V.-Spektrum. in 0,01 n-Natronlauge zeigt bei 255 mItC ein Maximum mit
EMI0001.0041
und bei 368 mAc ein solches mit
EMI0001.0043
Sowohl das rohe als auch das gemäss vor stehenden Angaben.
gereinigte Kondensations- produkt zeigen überraschenderweise im Wachs tumstest an Streptokokkus lactis eine bio logische Wirksamkeit von der Art und der Grössenordnung derjenigen von Folsäure. Der als der eine Ausgangsstoff verwendete 2-Amino- 6-oxy-8-pteridylaldehyd kann auf folgende Weise gewonnen werden:
2,4,5-Triamino-6-oxy-pyrimidin wird mit einer Ketohexose in schwach saurer Lösung in Gegenwart von Hy drazin zu 2-Amino-6-oxy-8- (tetraoxybutyl)-pteridin kondensiert; durch Behandlung der letzteren Verbindung mit einem zur Glykolspaltung- geeigneten Oxy dationsmittel, wie zum Beispiel Kaliumper- jodat oder Blei-tetra-acetat, erhält man den 2-Ainino-6-oxy-8-pteridylaldehyd.
Die bisher unbekannte Formylfolsäure soll als Zwischenprodukt für die Herstellung von Folsäure dienen: <I>Beispiel 1:</I> 10 Gewichtsteile 2-Amino-6-oxy-8-pteridyl- aldehyd und 14 Gewichtsteile p-Amino-benzoyl- 1-(+)-glutaminsäure werden in 350 Raumtei len Ameisensäure 1 Stunde auf 67 C erwärmt-.
N ach dem Abkühlen wird die filtrierte Lösung in 4000 Raumteilen Äther eingerührt, der Niederschlag filtriert, gepresst, mit Wasser und Alkohol gewaschen und bei 50 C getrock- net. Dieses Produkt kann durch mehrmaliges Umlösen aus Wasser gereinigt werden oder besser durch Behandeln des pulverisiertenPro- duktes mit 10 Gewichtsteilen Magnesiiunoxyd in 8000 Raumteilen kaltem oder 4000 Raum teilen Wasser von 70 C, wobei eine Lösung erhalten wird,
aus der nach dem Neutralisieren und Filtrieren durch Einstellen des p$ auf 3-4 14 Gewichtsteile Kondensationsprodukt anfallen. Die mikrobiologische Bestimmung ergab eine der gleichen Menge reinster syn thetischer Folsäure entsprechende Wirkung. Durch Umkristallisieren aus viel heissem Was- ser kann das Produkt noch weiter gereinigt werden.
<I>Beispiel 2:</I> 10 Gewichtsteile 2-Amino-6-oxy-8-pteridyl- aldehyd und 14 Gewichtsteile p-Amino-benzoyl- 1-(+)-glutaminsäure werden in 350 Raumtei len Ameisensäure 1 Stunde auf 67 C erwärmt. Die Lösung wird mit 1000 Raumteilen Wasser versetzt, filtriert und das Filtrat iin Vakuum auf 300 Raumteile eingeengt.
Durch Verdün nen mit Wasser und Abstumpfen auf 'p11 3,5 wird die Fällung des Kondensationsproduktes vervollständigt. Dieses wird 20 Stunden mit 10 Gewichtsteilen Magnesiumoxyd in 8000 Raumteilen Wasser in der Kugelmühle be handelt und filtriert. Die Lösung wird neu- tralisiert, filtriert, auf pH 3 bis 4 gestellt lind das ausfallende Kondensationsprodukt abge trennt. Ausbeute: 6,05 Gewichtsteile.
Process for the preparation of a pteridine derivative. As has been found, a new pteridine derivative can be obtained by treating 2-amino-6-oxy-8-pteridylaldehyde with p-amino-benzoyl-1- (-f -) - glutamic acid in the presence of formic acid at a temperature between 60 and 101 C is condensed.
The crude condensation product can be isolated from the reaction mixture by dilution, for example with water or ether, or, if the condensation was carried out in excess formic acid, by distilling off the unreacted formic acid.
An advantageous work-up method consists in treating the crude condensation product in aqueous suspension with magnesium oxide, adjusting the resulting solution to pH 7, filtering, acidifying the filtrate to pH 3 to 4, filtering off the precipitate and, if necessary, recrystallizing - Sizing out of water further purifies.
The new condensation product has the composition of a formylfolic acid. It is a yellow, microcrystalline powder that decomposes at temperatures above 250 C without melting. The product is readily soluble in formic acid; it is soluble or insoluble in the usual organic solvents and water. It is dissolved in acids and alkalis with salt formation and precipitates out of these solutions by adjusting the pH to 3 to 4.
The ammonium, alkali and alkaline earth salts are readily soluble, the Ni, Ag, Pb, Zn, Cu and Hg salts are sparingly soluble. The U.V. spectrum. in 0.01 N sodium hydroxide solution shows a maximum at 255 mItC
EMI0001.0041
and at 368 mAc one with
EMI0001.0043
Both raw and according to the above information.
In the growth test on Streptococcus lactis, purified condensation products surprisingly show a biological effectiveness of the same type and magnitude as that of folic acid. The 2-amino-6-oxy-8-pteridylaldehyde used as the starting material can be obtained in the following way:
2,4,5-Triamino-6-oxy-pyrimidine is condensed with a ketohexose in a weakly acidic solution in the presence of hydrazine to give 2-amino-6-oxy-8- (tetraoxybutyl) pteridine; treatment of the latter compound with an oxidizing agent suitable for glycol cleavage, such as potassium periodate or lead tetra-acetate, gives 2-amino-6-oxy-8-pteridylaldehyde.
The previously unknown formylfolic acid is intended to serve as an intermediate product for the production of folic acid: <I> Example 1: </I> 10 parts by weight of 2-amino-6-oxy-8-pteridyl aldehyde and 14 parts by weight of p-amino-benzoyl 1- (+) - Glutamic acid are heated in 350 Raumtei len formic acid to 67 C for 1 hour.
After cooling, the filtered solution is stirred into 4000 parts by volume of ether, the precipitate is filtered, pressed, washed with water and alcohol and dried at 50.degree. This product can be cleaned by dissolving it several times in water or, better, by treating the powdered product with 10 parts by weight of magnesium oxide in 8000 parts by volume of cold or 4000 parts of water at 70 C, whereby a solution is obtained,
from which, after neutralization and filtration, by adjusting the p $ to 3-4, 14 parts by weight of condensation product are obtained. The microbiological determination showed an effect corresponding to the same amount of the purest synthetic folic acid. The product can be further purified by recrystallizing from a lot of hot water.
<I> Example 2: </I> 10 parts by weight of 2-amino-6-oxy-8-pteridyl aldehyde and 14 parts by weight of p-amino-benzoyl-1 - (+) - glutamic acid in 350 parts by volume of formic acid for 1 hour 67 C warmed. 1000 parts by volume of water are added to the solution, the mixture is filtered and the filtrate is concentrated to 300 parts by volume in vacuo.
The precipitation of the condensation product is completed by diluting with water and blunting to 'p11 3.5. This is treated with 10 parts by weight of magnesium oxide in 8000 parts by volume of water in a ball mill for 20 hours and filtered. The solution is neutralized, filtered, adjusted to pH 3 to 4 and the condensation product which precipitates is separated off. Yield: 6.05 parts by weight.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH263281T | 1948-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH263281A true CH263281A (en) | 1949-08-31 |
Family
ID=4474775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH263281D CH263281A (en) | 1948-01-23 | 1948-01-23 | Process for the preparation of a pteridine derivative. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH263281A (en) |
-
1948
- 1948-01-23 CH CH263281D patent/CH263281A/en unknown
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