Steroids esterified in position 17 and thioesterified in position 21, a process for preparing them and their use as medicaments
CA 1251784 A · Owner: S.I.P.S.Y. · Inventors: Aubard, Gilbert G.; Grouhel, Agnes G.; Roux, Claude P.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula : wherein A and B each represent, independently of each other, a straight-chained or branched alkyl group having from 1 to 6 carbon atoms or a phenyl group optionally mono- or polysubstituted by alkyl radicals having from 1 to 6 carbon atoms, alkoxy groups having from 1 to 6 carbon atoms or halogen T and U independently of each other represent hydrogen atoms or together form 2 double bond, V is a hydrogen atom or a methyl group at the ?-position, W is a hydrogen atom or a halogen atom at the ?-position X is a, hydroxy group at the .beta.-position and Y is a hydrogen atom or X and Y may together represent an oxygen atom, and Z1 is a hydrogen atom, a methyl group at the …
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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
- Granted March 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2006.
- 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.