Pyrrolo ¬3,2,1-hi indole derivatives, their preparation and pharmaceutical compositions containing them
CA 1238326 A · Owner: Synthelabo · Inventors: Morel, Claude; Bigg, Dennis; Sevrin, Mireille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PYRROLO3,2,1-hiINDOLE DERIVATIVES THEIR PREPARATION, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM" Pyrrolo3,2,1-hiindole derivatives, in the form of racemates or optically active isomers, of formula (I) (I), in which R is a hydrogen atom or C1-C4 alkyl and R1 and R2 which may be the same or different, are hydrogen halogen or, C1-C4 alkyl and their pharmaceutically acceptable acid addition salts are useful as .alpha.2-antagonists.
Read the whole patent
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
- Granted June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.