AT229863B - Process for the preparation of the new 2- (5-nitro-2-furyl) imidazo- [1,2-a] pyridine or pyrimidine - Google Patents
Process for the preparation of the new 2- (5-nitro-2-furyl) imidazo- [1,2-a] pyridine or pyrimidineInfo
- Publication number
- AT229863B AT229863B AT763962A AT763962A AT229863B AT 229863 B AT229863 B AT 229863B AT 763962 A AT763962 A AT 763962A AT 763962 A AT763962 A AT 763962A AT 229863 B AT229863 B AT 229863B
- Authority
- AT
- Austria
- Prior art keywords
- nitro
- furyl
- imidazo
- pyridine
- new
- Prior art date
Links
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung des neuen 2- (5-Nitro-2-furyl) -imidazo-[1, 2-a]-pyridins bzw. -pyrimidins
Die Erfindung betrifft ein Verfahren zur Herstellung neuer chemischer Verbindungen der allgemeinen Formel I :
EMI1.1
in welcher X ein Stickstoffatom oder eine CH-Gruppe bedeutet.
Diese Verbindungen sind hochschmelzende, in Wasser wenig lösliche, kristalline Substanzen. Sie sind parasiticid wirksam, insbesondere gegenüber Bakterien und Protozoen. Durch Zugabe geeigneter Trä- gersubstanzen lassen sie sich in Zubereitungen überführen, mit welchen man das Wachstum von Parasiten bekämpfen und verhindern kann ; insbesondere bei oraler Verabreichung entwickeln die Substanzen eine systemische parasiticide Wirkung. So kann man z. B. Mäuse, welche mit tödlichen Mepgen Salmonella typhosa infiziert sind, durch Verabreichung von 50 bis 250 mg/kg dieser neuen Verbindungen heilen.
Auch mit Histomonas meleagridis infizierte Kücken und Truthühner können erfolgreich behandelt werden, wenn man ihnen ein Futter verabreicht, welches zirka 0, 011 - 0, 022 Gew.-% der Verbindungen enthält.
Das 2-(5-Nitro-2-furyl)-imidazo-[1,2-a]-pyridin bzw. -pyrimidin wird erfindungsgemäss dadurch hergestellt, dass man ein Halogenmeihyl- (5-nitro-2-furyl)-keton mit dem entsprechenden Amino-Hete- rocyclus kondensiert :
EMI1.2
Die Reaktion wird vorzugsweise in Gegenwart eines inerten Solvens, wie z. B. Dimethylformamid oder Alkohol, durchgeführt, wobei man äquimolekulare Mengen der Komponenten einsetzt. Zur Beschleunigung der Reaktion ist es zweckmässig, wenn man das Gemisch rührt ; gegebenenfalls kann auch leicht erwärmt werden. Nach Beendigung der Reaktion wird das auskristallisierte Kondensationsprodukt abfiltriert und in üblicher Weise gereinigt.
In den nachstehenden Beispielen ist das erfindungsgemässe Verfahren näher beschrieben.
<Desc/Clms Page number 2>
Beispiel1 :2-(5-Nitro-2-furyl)-imidazo-[1,2-a]-pyridin.
Eine Lösung von 66 g 2-Amino-pyridin in 300 cm3 Äthanol wird mit einer Lösung von 82 g Brommethyl-(5-nitro-2-furyl)-keton in 70 cm3 Dimethylformamid versetzt. Die dunkle Lösung wird auf der Heizplatte erwärmt, bis ein Niederschlag ausfällt. Dann lässt man abkühlen, filtriert den gelben Niederschlag ab und. wäscht ihn mit Äthanol und Äther. Auf diese Weise erhält man 51 g (= 63% d. Th.) 2-(5-Nitro-
EMI2.1
einer Suspension von 60 g 2-Amino-pyrimidin in 250 cm3 Dimethylformamid gegeben. Nach Behandlung der dunklen Lösung mit Tierkohle wird das Filtrat 10 min auf einer Heizplatte erwärmt. Der beim Abkühlen ausgefallene braune Niederschlag wird abfiltriert. Nach Umkristallisieren aus Dimethylformamid
EMI2.2
<Desc / Clms Page number 1>
Process for the preparation of the new 2- (5-nitro-2-furyl) imidazo- [1,2-a] pyridine or pyrimidine
The invention relates to a process for the preparation of new chemical compounds of the general formula I:
EMI1.1
in which X denotes a nitrogen atom or a CH group.
These compounds are high-melting, crystalline substances that are sparingly soluble in water. They are parasiticidal, especially against bacteria and protozoa. By adding suitable carrier substances, they can be converted into preparations with which the growth of parasites can be combated and prevented; in particular when administered orally, the substances develop a systemic parasiticidal effect. So you can z. B. Cure mice infected with deadly Mepgen Salmonella typhosa by administration of 50 to 250 mg / kg of these new compounds.
Chicks and turkeys infected with Histomonas meleagridis can also be treated successfully if they are given a feed which contains approximately 0.011-0.022% by weight of the compounds.
The 2- (5-nitro-2-furyl) -imidazo- [1,2-a] -pyridine or -pyrimidine is prepared according to the invention by a halomethyl- (5-nitro-2-furyl) ketone with condensed to the corresponding amino heterocycle:
EMI1.2
The reaction is preferably carried out in the presence of an inert solvent, such as. B. dimethylformamide or alcohol, carried out using equimolecular amounts of the components. To accelerate the reaction, it is useful if the mixture is stirred; if necessary, it can also be heated slightly. After the reaction has ended, the condensation product which has crystallized out is filtered off and purified in the customary manner.
The process according to the invention is described in more detail in the examples below.
<Desc / Clms Page number 2>
Example 1: 2- (5-Nitro-2-furyl) -imidazo- [1,2-a] -pyridine.
A solution of 66 g of 2-aminopyridine in 300 cm3 of ethanol is mixed with a solution of 82 g of bromomethyl (5-nitro-2-furyl) ketone in 70 cm3 of dimethylformamide. The dark solution is heated on the hot plate until a precipitate separates out. It is then allowed to cool, the yellow precipitate is filtered off and. washes it with ethanol and ether. In this way, 51 g (= 63% of theory) of 2- (5-nitro-
EMI2.1
added to a suspension of 60 g of 2-aminopyrimidine in 250 cm3 of dimethylformamide. After treating the dark solution with animal charcoal, the filtrate is heated on a hot plate for 10 minutes. The brown precipitate which separates out on cooling is filtered off. After recrystallization from dimethylformamide
EMI2.2
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US229863XA | 1961-10-11 | 1961-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT229863B true AT229863B (en) | 1963-10-25 |
Family
ID=21812469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT763962A AT229863B (en) | 1961-10-11 | 1962-09-26 | Process for the preparation of the new 2- (5-nitro-2-furyl) imidazo- [1,2-a] pyridine or pyrimidine |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT229863B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT299179B (en) * | 1969-10-28 | 1972-06-12 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
-
1962
- 1962-09-26 AT AT763962A patent/AT229863B/en active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT299179B (en) * | 1969-10-28 | 1972-06-12 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
AT303714B (en) * | 1969-10-28 | 1972-12-11 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
AT303715B (en) * | 1969-10-28 | 1972-12-11 | Ciba Geigy | Process for the production of new 5-nitrofuran derivatives |
AT304518B (en) * | 1969-10-28 | 1973-01-10 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
AT304517B (en) * | 1969-10-28 | 1973-01-10 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
AT304519B (en) * | 1969-10-28 | 1973-01-10 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
AT305994B (en) * | 1969-10-28 | 1973-03-26 | Ciba Geigy Ag | Process for the production of new 5-nitrofuran derivatives |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH648037A5 (en) | IMIDAZO RIFAMYCIN DERIVATIVES WITH ANTIBACTERIAL EFFECTIVENESS. | |
DE1795837A1 (en) | PROCESS FOR THE PREPARATION OF 1,2-DIHYDRO-1-HYDROXY-PYRIMIDINES | |
CH380734A (en) | Process for the preparation of new s-triazine derivatives | |
DE1695756A1 (en) | Process for the preparation of new 3,1-benzoxazin-2-ones | |
AT229863B (en) | Process for the preparation of the new 2- (5-nitro-2-furyl) imidazo- [1,2-a] pyridine or pyrimidine | |
DE3438244C2 (en) | ||
CH436319A (en) | Process for the preparation of 3-amino-1,2,4-triazines | |
DE1177645B (en) | Process for the preparation of condensed heterocyclic compounds | |
DE3142559A1 (en) | "PYRIMIDINE DERIVATIVES" | |
DE2225433A1 (en) | Aminopyrazolo (3,4-b) pyridine-5-ketones with their salts, manufacturing processes therefor and pharmaceuticals therefrom | |
DE2519077C3 (en) | 3-Amino-4,5,6,7-tetrahydroindazole, process for their preparation and pharmaceutical preparations containing them | |
DE2849107A1 (en) | 2,6-DIPHENYL-3,7-DIOXABICYCLO 3.3.0 OCTANE-4,8-DIONE DERIVATIVES METHOD FOR THEIR PRODUCTION AND THE AGENTS CONTAINING THEY | |
DE1445438C (en) | ||
DE1695759C2 (en) | 5 methyl 7 nitro-8 hydroxyquinoline derivatives and a process for their manufacture | |
DE1545746C (en) | 2 square brackets on 2 (5 nitro 2 furyl) vinyl square brackets on pyridines and process for their preparation | |
DE2422430C3 (en) | Derivatives of secalonic acid D, process for their preparation and their use in combating tumors | |
AT236934B (en) | Process for the production of new hydrazones from 5-nitro-furfural | |
DE1545939C3 (en) | 1,3-Dihydro-5- (2-pyridyl) -7-trifluoromethyl-2H-1,4-benzodiazepin-2-one | |
DE2621828A1 (en) | PYRIDOCHINOLINS, THE PROCESS FOR THEIR MANUFACTURING AND MEDICINAL PRODUCTS CONTAINING THESE COMPOUNDS | |
DE1169948B (en) | Process for the production of antibacterially active N, N'-alkylene-1, 1'-alkylene-bis- (4-aminochinolinium halides) | |
DE1000387C2 (en) | Process for the preparation of new 1, 10-diazaanthracenes substituted in the 9-position | |
DE1793272C3 (en) | 2- (4'-chlorobenzyl) phenols, their manufacture and pharmaceuticals containing these compounds | |
DE1470157C (en) | 2 Dimethyl sulfate! ^ 9 square brackets on 3 (4 methylpiperazino) propylidene square brackets on thioxanthene, its cis / trans isomers, their salts and process for the preparation of these compounds | |
DE1219037B (en) | Process for the preparation of N-acylamido-5-nitro-2-furamidines | |
AT225196B (en) | Process for the preparation of the new 2,4-diamino-1-p-chlorophenyl-6,6-3'-methylpentamethylene-1,6-dihydro-s-triazine and its acid addition salts |