GB1019920A - 7-hydroxy-xanthines - Google Patents

7-hydroxy-xanthines

Info

Publication number
GB1019920A
GB1019920A GB1195163A GB1195163A GB1019920A GB 1019920 A GB1019920 A GB 1019920A GB 1195163 A GB1195163 A GB 1195163A GB 1195163 A GB1195163 A GB 1195163A GB 1019920 A GB1019920 A GB 1019920A
Authority
GB
United Kingdom
Prior art keywords
formula
compounds
xanthines
hydroxy
chain
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
GB1195163A
Inventor
Herbert Goldner
Guenther Dietz
Ernst Carstens
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.)
AWD Pharma GmbH and Co KG
Original Assignee
Arzneimittelwerk Dresden GmbH
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 Arzneimittelwerk Dresden GmbH filed Critical Arzneimittelwerk Dresden GmbH
Priority to GB1195163A priority Critical patent/GB1019920A/en
Publication of GB1019920A publication Critical patent/GB1019920A/en
Expired 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

Abstract

The invention comprises compounds of the formula <FORM:1019920/C2/1> where R1 and R2, the same or different, represent straight-chain or branched alkyl radicals and R3 represents a hydrogen atom or a straight-chain or branched alkyl radical or an aralkyl radical, and the preparation thereof by the oxidation of a compound of the formula <FORM:1019920/C2/2> with nitrous acid or an ester thereof. 7 - Unsubstituted - xanthines are formed as by-products in the above process. Compounds of the Formula II may be prepared by nitrosation of compounds of the formula <FORM:1019920/C2/3> with excess nitrosating agent. 1,3 - Dimethyl - uric acid is formed by the action of heat on 7-hydroxy theophyllin.
GB1195163A 1963-03-26 1963-03-26 7-hydroxy-xanthines Expired GB1019920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1195163A GB1019920A (en) 1963-03-26 1963-03-26 7-hydroxy-xanthines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1195163A GB1019920A (en) 1963-03-26 1963-03-26 7-hydroxy-xanthines

Publications (1)

Publication Number Publication Date
GB1019920A true GB1019920A (en) 1966-02-09

Family

ID=9995635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1195163A Expired GB1019920A (en) 1963-03-26 1963-03-26 7-hydroxy-xanthines

Country Status (1)

Country Link
GB (1) GB1019920A (en)

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