AT266860B - Process for the preparation of the new N-p-chlorobenzoyl-5-fluorocytosine - Google Patents
Process for the preparation of the new N-p-chlorobenzoyl-5-fluorocytosineInfo
- Publication number
- AT266860B AT266860B AT904566A AT904566A AT266860B AT 266860 B AT266860 B AT 266860B AT 904566 A AT904566 A AT 904566A AT 904566 A AT904566 A AT 904566A AT 266860 B AT266860 B AT 266860B
- Authority
- AT
- Austria
- Prior art keywords
- chlorobenzoyl
- fluorocytosine
- fluoro
- preparation
- new
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- DIJOXILRYSOKTG-UHFFFAOYSA-N 4-chloro-n-(5-fluoro-2-oxo-1h-pyrimidin-6-yl)benzamide Chemical compound FC1=CNC(=O)N=C1NC(=O)C1=CC=C(Cl)C=C1 DIJOXILRYSOKTG-UHFFFAOYSA-N 0.000 title description 9
- 238000002360 preparation method Methods 0.000 title description 4
- 229960004413 flucytosine Drugs 0.000 claims description 8
- XRECTZIEBJDKEO-UHFFFAOYSA-N flucytosine Chemical compound NC1=NC(=O)NC=C1F XRECTZIEBJDKEO-UHFFFAOYSA-N 0.000 claims description 7
- RKIDDEGICSMIJA-UHFFFAOYSA-N 4-chlorobenzoyl chloride Chemical compound ClC(=O)C1=CC=C(Cl)C=C1 RKIDDEGICSMIJA-UHFFFAOYSA-N 0.000 claims description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- GHASVSINZRGABV-UHFFFAOYSA-N Fluorouracil Chemical compound FC1=CNC(=O)NC1=O GHASVSINZRGABV-UHFFFAOYSA-N 0.000 description 2
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Chemical compound OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 2
- 229960002949 fluorouracil Drugs 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000000825 pharmaceutical preparation Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 241000222122 Candida albicans Species 0.000 description 1
- 206010007134 Candida infections Diseases 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 239000004264 Petrolatum Substances 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000002246 antineoplastic agent Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 201000003984 candidiasis Diseases 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- WHQSYGRFZMUQGQ-UHFFFAOYSA-N n,n-dimethylformamide;hydrate Chemical compound O.CN(C)C=O WHQSYGRFZMUQGQ-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung des neuen N-p-CMorbenzoyl-5-fluor-cytosins
Die Erfindung betrifft ein Verfahren zur Herstellung des neuen N-p-Chlorbenzoyl-5-fluor-cytosins der Formel
EMI1.1
welches dadurch gekennzeichnet ist, dass man 5-Fluor-cytosin mit einem p-Chlorbenzoylierungsmittel, beispielsweise mit p-Chlorbenzoylchlorid, umsetzt.
Die Acylierung des 5-Fluor-cytosins kann auf an sich bekannte Art durchgeführt werden, beispielsweise dadurch, dass man das 5-Fluor-cytosin mit dem Acylierungsmittel vermischt, z. B. bei Rückflusstemperatur und in Gegenwart eines organischen Lösungsmittels, wie Pyridin oder Dimethylformamid, Die Menge des Acylierungsmittels beträgt zweckmässig wenigstens 1 Mol pro Mol 5-Fluor-cytosin.
Das erfindungsgemäss erhältliche N-p-Chlorbenzoyl-5-fluor-cytosin lässt sich mittels Säuren leicht zum 5-Fluor-uracil hydrolysieren. Die letztere Verbindung ist bekanntlich ein Antitumormittel und wirkt auch keimtötend. Das N-p-Chlorbenzoyl-5-fluor-cytosin wirkt somit in biologischen Systemen als Vorläufer von 5-Fluor-uracil. N-p-Chlorbenzoyl-5-fluor-cytosin besitzt auch wertvolle anti - mikrobielle Eigenschaften. Auf Grund seiner fungiciden Eigenschaften kann es insbesondere zur Behandlung von Candidiasis Verwendung finden. N-p-Chlorbenzoyl-5-fluor-cytosin kann als Heilmittel z. B. in Form pharmazeutischer Präparate Verwendung finden, z.
B. in Mischung mit einem für die enterale, perkutane oder parenterale Applikation geeigneten pharmazeutischen, organischen oder anorganischen iner-
<Desc/Clms Page number 2>
ten Trägermaterial, wie z. B. Wasser, Gelatine, Gummi arabicum, Milchzucker, Stärke, Magnesiumstearat, Talk, pflanzliche Öle, Polyalkylenglykole, Vaseline. Die pharmazeutischen Präparate können
EMI2.1
; in halbfesterben ; oder in flüssiger Form, z. B. als Lösungen, Suspensionen oder Emulsionen, vorliegen. Gegebenenfalls sind sie sterilisiert und bzw. oder enthalten Hilfsstoffe, wie Konservierungs-, Stabilisierungs- Netz- oder Emulgiermittel, Salze zur Veränderung des osmotischen Druckes oder Puffer. Sie können auch noch andere therapeutisch wertvolle Stoffe enthalten.
Beispiel : Eine Suspension von 12, 9 g 5-Fluor-cytosin in 100 cms wasserfreiem Pyridin und 19 g p-Chlorbenzoylchlorid wird zum Rückfluss erhitzt. Die Suspension wird dabei bald klar. Nach 5 h wird die dunkelrot Lösung abgekühlt, mit 5 cms Methanol versetzt und 12 h bei Raumtemperatur stehen gelassen. Der erhaltene kristalline Brei wird abfiltriert, mit Wasser frei von Cl''gewaschen und dann bei 750C im Vakuum bis zur Gewichtskonstanz getrocknet. Das so erhaltene N-p-Chlorbenzoyl- - 5-fluor-cytosin schmilzt bei 232, 5 bis 233, 50C unter Gasentwicklung. Zur Umkristallisation wird das Produkt in 100 cms warmem Dimethylformamid gelöst und mit Tierkohle entfärbt.
Die warme Lösung wird zum Sieden erhitzt und mit Wasser versetzt, bis der kristalline Niederschlag sich bei weiterem Erhitzen nicht mehr löst. Nach Abkühlung auf Raumtemperatur wird filtriert und der Niederschlag mit Dimethylformamid-Wasser und Methanol gewaschen. Nach Trocknen bis zur Gewichtskonstanz bei 750C im Vakuum beträgt der Schmelzpunkt des so erhaltenen kristallinen N-p-Chlorbenzoyl-5-fluor-cytosins 238 bis 2390C (unter Zersetzung).
EMI2.2
1. Verfahren zur Herstellung des neuen N-p-Chlorbenzoyl-5-fluor-cytosins der Formel
EMI2.3
dadurch gekennzeichnet, dass man 5-Fluor-cytosin mit einem p-Chlorbenzoylierungsmittel umsetzt.
<Desc / Clms Page number 1>
Process for the preparation of the new N-p-C-benzoyl-5-fluorocytosine
The invention relates to a process for the preparation of the new N-p-chlorobenzoyl-5-fluorocytosine of the formula
EMI1.1
which is characterized in that 5-fluoro-cytosine is reacted with a p-chlorobenzoylating agent, for example with p-chlorobenzoyl chloride.
The acylation of the 5-fluoro-cytosine can be carried out in a manner known per se, for example by mixing the 5-fluoro-cytosine with the acylating agent, e.g. B. at reflux temperature and in the presence of an organic solvent such as pyridine or dimethylformamide. The amount of acylating agent is advantageously at least 1 mole per mole of 5-fluoro-cytosine.
The N-p-chlorobenzoyl-5-fluoro-cytosine obtainable according to the invention can easily be hydrolyzed to 5-fluoro-uracil by means of acids. The latter compound is known to be an anti-tumor agent and is also germicidal. The N-p-chlorobenzoyl-5-fluoro-cytosine thus acts as a precursor of 5-fluoro-uracil in biological systems. N-p-chlorobenzoyl-5-fluorocytosine also has valuable anti-microbial properties. Due to its fungicidal properties, it can be used in particular to treat candidiasis. N-p-chlorobenzoyl-5-fluorocytosine can be used as a remedy e.g. B. find use in the form of pharmaceutical preparations, e.g.
B. in a mixture with a pharmaceutical, organic or inorganic inert suitable for enteral, percutaneous or parenteral administration
<Desc / Clms Page number 2>
th carrier material, such as. B. water, gelatin, gum arabic, milk sugar, starch, magnesium stearate, talc, vegetable oils, polyalkylene glycols, petrolatum. The pharmaceutical preparations can
EMI2.1
; in semi-solid; or in liquid form, e.g. B. as solutions, suspensions or emulsions. If necessary, they are sterilized and / or contain auxiliaries such as preservatives, stabilizers, wetting agents or emulsifiers, salts for changing the osmotic pressure or buffers. They can also contain other therapeutically valuable substances.
Example: A suspension of 12.9 g of 5-fluorocytosine in 100 cms of anhydrous pyridine and 19 g of p-chlorobenzoyl chloride is heated to reflux. The suspension soon becomes clear. After 5 h the dark red solution is cooled, mixed with 5 cms of methanol and left to stand for 12 h at room temperature. The crystalline paste obtained is filtered off, washed free of Cl ″ with water and then dried to constant weight at 750 ° C. in vacuo. The N-p-chlorobenzoyl- 5-fluorocytosine obtained in this way melts at 232.5 to 233.50 ° C. with evolution of gas. For recrystallization, the product is dissolved in 100 cms warm dimethylformamide and decolorized with animal charcoal.
The warm solution is heated to the boil and mixed with water until the crystalline precipitate no longer dissolves with further heating. After cooling to room temperature, it is filtered and the precipitate is washed with dimethylformamide-water and methanol. After drying to constant weight at 750C in vacuo, the melting point of the crystalline N-p-chlorobenzoyl-5-fluorocytosine obtained in this way is 238 to 2390C (with decomposition).
EMI2.2
1. Process for the preparation of the new N-p-chlorobenzoyl-5-fluoro-cytosine of the formula
EMI2.3
characterized in that 5-fluoro-cytosine is reacted with a p-chlorobenzoylating agent.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US266860XA | 1965-10-22 | 1965-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT266860B true AT266860B (en) | 1968-12-10 |
Family
ID=21833256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT904566A AT266860B (en) | 1965-10-22 | 1966-09-27 | Process for the preparation of the new N-p-chlorobenzoyl-5-fluorocytosine |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT266860B (en) |
-
1966
- 1966-09-27 AT AT904566A patent/AT266860B/en active
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