DE264389C - - Google Patents

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Publication number
DE264389C
DE264389C DENDAT264389D DE264389DA DE264389C DE 264389 C DE264389 C DE 264389C DE NDAT264389 D DENDAT264389 D DE NDAT264389D DE 264389D A DE264389D A DE 264389DA DE 264389 C DE264389 C DE 264389C
Authority
DE
Germany
Prior art keywords
xanthine
alkali
bases
free
carboxylic acids
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.)
Active
Application number
DENDAT264389D
Other languages
German (de)
Publication of DE264389C publication Critical patent/DE264389C/de
Active legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D473/00—Heterocyclic compounds containing purine ring systems
    • C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
    • C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
    • C07D473/06—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
    • C07D473/08—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 1 and 3, e.g. theophylline

Landscapes

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

Description

BERLIN GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-An Spruch:Patent-An saying: Verfahren zur Darstellung von leicht löslichen Xanthinderivaten, darin bestehend, daß man Xanthinbasen mit den Alkalisalzen von Chinolincarbonsäuren oder die Alkaliverbindungen der Xanthinbasen mit den freien Säuren, oder aber die Xanthinbasen und freien Chinolincarbonsäuren mit Alkali behandelt.Process for the preparation of easily soluble xanthine derivatives, consisting therein that one xanthine bases with the alkali salts of quinoline carboxylic acids or the alkali compounds of the xanthine bases with the free acids, or the xanthine bases and free quinoline carboxylic acids with Alkali treated.
DENDAT264389D Active DE264389C (en)

Publications (1)

Publication Number Publication Date
DE264389C true DE264389C (en)

Family

ID=521710

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT264389D Active DE264389C (en)

Country Status (1)

Country Link
DE (1) DE264389C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748005C (en) * 1939-12-15 1944-10-23 Process for the production of readily water-soluble compounds of theophylline or caffeine
DE762284C (en) * 1940-07-15 1952-07-24 Byk Guldenwerke Chem Fab A G Process for increasing the water solubility of dimethylxanthines and their compounds
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748005C (en) * 1939-12-15 1944-10-23 Process for the production of readily water-soluble compounds of theophylline or caffeine
DE762284C (en) * 1940-07-15 1952-07-24 Byk Guldenwerke Chem Fab A G Process for increasing the water solubility of dimethylxanthines and their compounds
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

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