4-substituted androstendione derivatives and process for their preparation
CA 1319362 C · Owner: Faustini, Franco · Inventors: Di Salle, Enrico; Lombardi, Paolo; Faustini, Franco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention discloses 4-substituted androstendione derivatives of the following formula (I) (I), wherein R is amino or azido, one of R1 and R2 is hydrogen and the other is hydrogen, alkyl, alkenyl or alkynyl and (x) and (y) are, each, independently a single bond or a double bond. The, compounds of formula (I) are useful aromatase inhibitors.
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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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
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Timeline
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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.