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Last Updated: December 3, 2021

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Patent: 4,289,776

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Summary for Patent: 4,289,776
Title: Xanthine derivatives
Abstract:Compounds of general formula ##STR1## wherein one of the groups R.sub.1 and R.sub.3 is a straight-chain or branched oxoalkyl group consisting from 5 to 8 carbon atoms and the oxygen atom is attached to a non-terminal carbon atom and is separated from the nearest ring nitrogen atom by at least 3 carbon atoms in (.omega.-1)-oxoalkyl groups and by at least 4 carbon atoms in oxoalkyl groups in which the oxygen atom is separated from the terminal carbon atom by more than one carbon atom, R.sub.2 and the other one of groups R.sub.1 and R.sub.3 are straight chain or branched alkyl groups containing from 1 to 12 carbon atoms but wherein that group R.sub.1 or R.sub.3 which is other than an oxoalkyl group may also be hydrogen, one nitrogen-bound substituent being hydrogen or alkyl containing more than 1 carbon atom, and physiologically acceptable acid addition salts thereof, a process for their preparation and pharmaceutical compositions containing said compounds.
Inventor(s): Mohler; Werner (Hofheim, DE), Jayme; Manfred (Wiesbaden, DE), Komarek; Jaromir (Wiesbaden, DE)
Assignee: Hoechst Aktiengesellschaft (Frankfurt am Main, DE)
Application Number:06/032,536
Patent Claims:see list of patent claims

Details for Patent 4,289,776

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live For Injection 125123 2006-05-25 ⤷  Try it Free 1998-09-15
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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