Process for the preparation of triterpene derivatives
CA 1102304 A · Owner: I/S/F Societa Per Azioni · Inventors: Gamba, Alfro; Farina, Carlo; Umani-Ronchi, Achille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides 3.beta.-hydroxy-18.beta.-olean-9en-30-oic acids of the formula:, (I), and corresponding esters in the 3-position with mono- and dicarboxylic acids containing from 2 to 5 carbon atoms as well, as the pharmaceutically acceptable salts thereof with alkaline metals, amino acids and copper. These compounds have a pronounced anti-ulcer action and do not cause sodium retention at the effective dose levels which, together with a low toxicity of active doses, makes them very interesting pharmacologically.
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 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
- 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.