14.beta.-HYDROXY 3-DEOXYCARDENOLIDES
CA 1090330 A · Owner: Steele Chemicals Co. Ltd. · Inventors: Kruger, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed processes for the preparation of 14.beta.-hydroxy 3-deoxycardenolides by oxidizing a 3.beta.14.beta.dihydroxy cardenolide to form a 3-oxo-14.beta.-hydroxy cardenolide and subsequently direct deoxygenating the 3-keto group. There are also disclosed novel compounds from such processes which compounds have pharmaceutical activity.
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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.