DE691339C - Process for the preparation of concentrated aqueous theophylline solutions - Google Patents

Process for the preparation of concentrated aqueous theophylline solutions

Info

Publication number
DE691339C
DE691339C DE1939C0054812 DEC0054812D DE691339C DE 691339 C DE691339 C DE 691339C DE 1939C0054812 DE1939C0054812 DE 1939C0054812 DE C0054812 D DEC0054812 D DE C0054812D DE 691339 C DE691339 C DE 691339C
Authority
DE
Germany
Prior art keywords
theophylline
preparation
concentrated aqueous
ephedrine
solutions
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
DE1939C0054812
Other languages
German (de)
Inventor
Dr Erwin Kohlstaedt
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.)
CHEMISCH PHARMAZEUTISCHE A G B
Original Assignee
CHEMISCH PHARMAZEUTISCHE A G B
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 CHEMISCH PHARMAZEUTISCHE A G B filed Critical CHEMISCH PHARMAZEUTISCHE A G B
Priority to DE1939C0054812 priority Critical patent/DE691339C/en
Application granted granted Critical
Publication of DE691339C publication Critical patent/DE691339C/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/16Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing nitrogen, e.g. nitro-, nitroso-, azo-compounds, nitriles, cyanates
    • A61K47/18Amines; Amides; Ureas; Quaternary ammonium compounds; Amino acids; Oligopeptides having up to five amino acids

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Verfahren zur Herstellung von konzentrierten wäßrigen Theophyllinlösungen Zusatz zum Patent 690 488 Es sind bereits verschiedene Verfahren bekannt, um das schwer lösliche Theophyllin in wäßrige Lösungen zu überführen. Hierbei hat man als Lösungsvermittler leicht wasserlös- -liche Amine, wie Äthylendiamin oder Diäthanolamin, verwendet.Process for the preparation of concentrated aqueous theophylline solutions Addendum to Patent 690 488 Various methods are already known for the To convert poorly soluble theophylline into aqueous solutions. Here you have as Solubilizers readily water-soluble amines, such as ethylenediamine or diethanolamine, used.

Gegenstand des Hauptpatents ist ein Verfahren zur Herstellung . von konzentrierten wäßrigen Koffeinlösungen unter Anwendung von ß-Phenylisopropylamin oder seiner Derivate mit ephedrinartiger Wirkung, wie Ephedin, Ph enylmethylaminopropanol (synthetisches, razemisches Ephedrin) oder ihren Salzen, als Lösungsvermittler. The main patent relates to a method of manufacture. from concentrated aqueous caffeine solutions using ß-phenylisopropylamine or its derivatives with an ephedrine-like effect, such as ephedine, phenylmethylaminopropanol (synthetic, racemic ephedrine) or their salts, as solubilizers.

Es wurde nun gefunden, daß man solche Verbindungen auch als Lösungsvermittler für das Theophyllin verwenden kann. Dieses Ergebnis ist durchaus überraschend, da sowohl das Theophyllin als auch die Verbindungen mit ephedrinartiger Wirkung an sich schwer löslich sind. It has now been found that such compounds can also be used as solubilizers for which theophylline can use. This result is quite surprising since both theophylline and the compounds with ephedrine-like effects are difficult to dissolve.

Die Löslichkeit der genannten Stoffe in Wasser von Zimmertemperatur ist die folgende: Theophyllin . . weniger als 1%, Ephedrin ..... . .. .... etwa 4%, Phenylmethylaminopropanol etwa 2,70/0, ß-Phenylisopropylamin weniger als 1,7%. The solubility of the substances mentioned in water at room temperature is the following: theophylline. . less than 1%, ephedrine ...... .. .... approximately 4%, phenylmethylaminopropanol about 2.70 / 0, β-phenylisopropylamine less than 1.7%.

Durch gemeinsames Lösen von Theophyllin und einer dieser Verbindungen können aber Lösungen hergestellt werden, die bis zu I9,8 % Theophyllin und bis zu 33% der ephedrin--artigen Verbindungen enthalten. By dissolving theophylline and one of these compounds together but solutions can be prepared containing up to 19.8% theophylline and up to Contains 33% of ephedrine-like compounds.

Beispiele I. 19,8 g.Theophyllin werden mit 27,0 g ß-Phenylisopropylamin innig vermengt und das Gemenge mit destilliertem Wasserbad 100 ccm aufgefüllt. Die beiden schwer löslichen Verbindungen gehen in völlig klare Lösung über. Der Lösungsvorgang kann gegebenenfalls durch Erwärmen beschleunigt werden. In der Lösung liegen das Theoph l und die ephedrinartige Verbindung in så Verhältnis von 1 Mol zu 1 Mol vor. Examples I. 19.8 g of theophylline are mixed with 27.0 g of β-phenylisopropylamine intimately mixed and the mixture made up with a 100 ccm distilled water bath. the both sparingly soluble Connections go into completely clear solution above. The dissolution process can optionally be accelerated by heating. In the solution, the Theoph I and the ephedrine-like compound are in the same relationship from 1 mole to 1 mole.

2. 19,8 g Theophyllin werden mit Hilfe 16,5 g bzw. 33,0 g Ephedrin gemäß Beispiel ad 100 ccm in wäßrige Lösung übergeführt. 2. 19.8 g of theophylline become with the aid of 16.5 g or 33.0 g of ephedrine According to the example, converted to 100 cc in aqueous solution.

Im ersten Falle liegen Theophyllin und Ephedrin im Verhältnis 1 Mol zu I Mol, im zweiten Falle I Mol zu 2 Mol vor.In the first case, theophylline and ephedrine are in a ratio of 1 mole to I mol, in the second case I mol to 2 mol.

3. 12,4 g Theophyllin werden unter Zusatz von 10 g Phenylmethylaminopropanol ad 100 ccm Wasser in Lösung übergeführt. 3. 12.4 g of theophylline are added with the addition of 10 g of phenylmethylaminopropanol converted into solution ad 100 ccm of water.

Claims (1)

P A T E N T A N S P R U C H: Abänderung des Verfahrens nach Pa--tent 690488, dadurch gekennzeichnet, daß man ß-Phenylisopropylamin oder seine Derivate mit ephedrinartiger Wirkung, wie Ephedrin oder Phenylmethylaminopropanol, als Lösungsvermittler für Theophyllin verwendet. P A T E N T A N S P R U C H: Modification of the procedure according to the patent 690488, characterized in that ß-phenylisopropylamine or its derivatives with an ephedrine-like effect, such as ephedrine or phenylmethylaminopropanol, as a solubilizer used for theophylline.
DE1939C0054812 1939-02-24 1939-02-24 Process for the preparation of concentrated aqueous theophylline solutions Expired DE691339C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1939C0054812 DE691339C (en) 1939-02-24 1939-02-24 Process for the preparation of concentrated aqueous theophylline solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1939C0054812 DE691339C (en) 1939-02-24 1939-02-24 Process for the preparation of concentrated aqueous theophylline solutions

Publications (1)

Publication Number Publication Date
DE691339C true DE691339C (en) 1940-05-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939C0054812 Expired DE691339C (en) 1939-02-24 1939-02-24 Process for the preparation of concentrated aqueous theophylline solutions

Country Status (1)

Country Link
DE (1) DE691339C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498687A (en) * 1945-11-01 1950-02-28 Delmar H Larsen Vasoconstrictor composition
DE900486C (en) * 1942-06-02 1953-12-28 Byk Gulden Lomberg Chem Fab Process for the production of concentrated, aqueous solutions of theophylline
US2739921A (en) * 1951-11-21 1956-03-27 Upjohn Co Bronchodilator composition of beta-(orthomethoxy phenyl)-isopropylmethylamine with theophylline
DE944518C (en) * 1950-08-20 1956-06-14 Byk Gulden Lomberg Chem Fab Process for the preparation of solutions of xanthines substituted in the 1,3-position

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900486C (en) * 1942-06-02 1953-12-28 Byk Gulden Lomberg Chem Fab Process for the production of concentrated, aqueous solutions of theophylline
US2498687A (en) * 1945-11-01 1950-02-28 Delmar H Larsen Vasoconstrictor composition
DE944518C (en) * 1950-08-20 1956-06-14 Byk Gulden Lomberg Chem Fab Process for the preparation of solutions of xanthines substituted in the 1,3-position
US2739921A (en) * 1951-11-21 1956-03-27 Upjohn Co Bronchodilator composition of beta-(orthomethoxy phenyl)-isopropylmethylamine with theophylline

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