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Generated: November 23, 2017

DrugPatentWatch Database Preview

Details for Patent: RE34440

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Summary for Patent: RE34440

Title: Benzonaphthalene derivatives, a process for their preparation and their use in therapeutic and cosmetic compositions
Abstract:A benzonaphthalene compound has the formula ##STR1## wherein R.sub.1 represents ##STR2## or (ii) --CH.sub.2 OH; R.sub.6 represents ##STR3## or OR.sub.7 wherein R.sub.7 represents hydrogen, alkyl having 1-20 carbon atoms, monohydroxyalkyl or polyhydroxyalkyl, r' or r" represent hydrogen, lower alkyl, mono or polyhydroxyalkyl, aryl or a residue of an amino acid or a sugar, or together form a heterocycle; R.sub.2 represents hydrogen, alkyl having 1-15 carbon atoms, alkoxy having 1-4 carbon atoms or a cycloaliphatic radial; R.sub.3 represents hydrogen, hydroxy, alkyl having 1-4 carbon atoms, alkoxy having 1-10 carbon atoms, a cycloaliphatic radical, a thiocycloaliphatic radical or --O--Si(CH.sub.3).sub.2 --R.sub.8 wherein R.sub.8 represents lower alkyl; and R.sub.4 and R.sub.5 represent hydrogen, lower alkyl, hydroxy or lower acyloxy. This compound is useful in the topical and systemic treatment of dermatologic diseases and in the treatment of the degeneration of conjunctive tissues. The compound also possesses anti-tumor activity.
Inventor(s): Shroot; Braham (Antibes, FR), Eustache; Jacques (Grasse, FR), Bernardon; Jean-Michel (Nice, FR)
Assignee: Centre International de Recherches Dermatologiques (C.I.R.D.) (Valbonne, FR)
Application Number:07/913,897
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Process;

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Foreign Priority and PCT Information for Patent: RE34440

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Luxembourg85849Apr 11, 1985

International Patent Family for Patent: RE34440

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria40675► Subscribe
Australia4796190► Subscribe
Australia5591286► Subscribe
Australia595192► Subscribe
Australia638223► Subscribe
Canada1266646► Subscribe
Germany10199023► Subscribe
Germany199636► Subscribe
Germany3662038► Subscribe
Denmark162286► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Healthtrust
Daiichi Sankyo
Baxter
AstraZeneca
Harvard Business School
Fuji
Argus Health
Cipla
Medtronic
Johnson and Johnson

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