4-amidino chroman and 4-amidino pyrano (3,2-c) pyridine derivatives, a process for their preparation and pharmaceutical compositions containing them
CA 2029278 A1 · Owner: Sanofi · Inventors: Roux, Richard; Garcia, Georges; Gautier, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Entitled : 4-amidino chroman and 4-amidino pyrano (3,2-c) pyridine derivativés, a process for their preparatjon and pharmaceutical compositions containing them. in the names of : Georges GARCIA Patrick GAUTIER, Dino NISATO, Richard ROUX Assignee : SANOFI, ABSTRACT OF THE DISCLOSURE The present invention deals with 4-amidino chroman and 4-amidino pyrano (3,2-c) pyridine derivatives a process for their, preparation and pharmaceutical compositions containing them. Said derivatives have antihypertensive and antiarythmic activities. They respond to formula, (I), in which :, . A + B = -CH=CH-CH=N- ou -CH=CR4-CR5=CH-; . X = N, N ? 0, C-Z ;, . R1 = H, CN, NO2 C1-C4 alkyl, OH, C1-C4 alcoxy, CF3CO-, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.