DE217620C - - Google Patents

Info

Publication number
DE217620C
DE217620C DENDAT217620D DE217620DA DE217620C DE 217620 C DE217620 C DE 217620C DE NDAT217620 D DENDAT217620 D DE NDAT217620D DE 217620D A DE217620D A DE 217620DA DE 217620 C DE217620 C DE 217620C
Authority
DE
Germany
Prior art keywords
theophylline
piperazine
mixtures
salts
act
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
DENDAT217620D
Other languages
German (de)
English (en)
Publication of DE217620C publication Critical patent/DE217620C/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)
  • Medicines Containing Plant Substances (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
DENDAT217620D Active DE217620C (en))

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE223695T

Publications (1)

Publication Number Publication Date
DE217620C true DE217620C (en))

Family

ID=33035725

Family Applications (4)

Application Number Title Priority Date Filing Date
DENDAT224981D Active DE224981C (en))
DENDAT223695D Active DE223695C (en))
DENDAT214376D Active DE214376C (en))
DENDAT217620D Active DE217620C (en))

Family Applications Before (3)

Application Number Title Priority Date Filing Date
DENDAT224981D Active DE224981C (en))
DENDAT223695D Active DE223695C (en))
DENDAT214376D Active DE214376C (en))

Country Status (1)

Country Link
DE (4) DE217620C (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748005C (de) * 1939-12-15 1944-10-23 Verfahren zur Herstellung von leicht wasserloeslichen Verbindungen des Theophyllins bzw. Coffeins
DE762284C (de) * 1940-07-15 1952-07-24 Byk Guldenwerke Chem Fab A G Verfahren zur Erhoehung der Wasserloeslichkeit der Dimethylxanthine und ihrer Verbindungen
DE908857C (de) * 1951-05-28 1954-06-08 Hoffmann La Roche Verfahren zur Herstellung einer leicht loeslichen Verbindung aus Theophyllin und 3-Aminomethylpyridin
DE944518C (de) * 1950-08-20 1956-06-14 Byk Gulden Lomberg Chem Fab Verfahren zur Herstellung von Loesungen von in 1, 3-Stellung substituierten Xanthinen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207936B (de) * 1961-03-17 1965-12-30 Boehringer Sohn Ingelheim Verfahren zur Herstellung wasserloeslicher Theophyllinverbindungen von bisquartaerenAmmoniumhydroxyden
DE2547916C2 (de) * 1975-10-25 1986-06-05 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Endabschaltung für den Lenkmotor von hydraulischen Kraftfahrzeug-Servolenkanlagen
US6070295A (en) * 1998-09-22 2000-06-06 Bemis Manufacturing Company Quick release toilet seat hinge with swivel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748005C (de) * 1939-12-15 1944-10-23 Verfahren zur Herstellung von leicht wasserloeslichen Verbindungen des Theophyllins bzw. Coffeins
DE762284C (de) * 1940-07-15 1952-07-24 Byk Guldenwerke Chem Fab A G Verfahren zur Erhoehung der Wasserloeslichkeit der Dimethylxanthine und ihrer Verbindungen
DE944518C (de) * 1950-08-20 1956-06-14 Byk Gulden Lomberg Chem Fab Verfahren zur Herstellung von Loesungen von in 1, 3-Stellung substituierten Xanthinen
DE908857C (de) * 1951-05-28 1954-06-08 Hoffmann La Roche Verfahren zur Herstellung einer leicht loeslichen Verbindung aus Theophyllin und 3-Aminomethylpyridin

Also Published As

Publication number Publication date
DE223695C (en))
DE214376C (en))
DE224981C (en))

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