Acyl derivatives
CA 1111021 A · Owner: Hoffmann-La Roche Limited · Inventors: Montavon, Marc; Reiner, Roland
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 novel acyl derivatives of the general formula, X - S - Y (I), wherein X represents a desacetoxycephalosporinyl group and Y represents a 6-membered, optionally substituted heterocyclic group which contains 1, 2 or 3 nitrogen atoms but which is not aromatic and is not enolisable to an aromatic group; at least one of said nitrogen atoms being substituted and at least one of said nitrogen atoms forming an amide group with an adjacent carbonyl group to salts thereof and to hydrates of these salts as well as to a process for, the preparation of these compounds which have antibiotic properties.
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 October 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.