Method for the preparation of 21-hydroxy-6,19-oxidoprogesterone (21oh-6op)
CA 2419960 A1 · Owner: Veleiro, Adriana Silvia · Inventors: Burton, Gerardo; Lantos, Carlos P.; Veleiro, Adriana Silvia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a novel method for preparing 21-hydroxy-6,19oxidopro-gesterone (21OH-6OP) and/or its 21-acetate 21-propionate, 21-, hemisuccinate, 21-phosphate 21-oleate derivatives. 21OH-6OP and its ester derivatives are antiglucocorticoids for the treatment or prophy laxis of diseases associated to an excess of glucocorticoids in particular for , treating Cushing's syndrome iatrogenic hypercortisolism or depression.
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
- Filed September 17, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2023.
- 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.