Macrolide compounds
CA 1282064 C · Owner: Glaxo Group Limited · Inventors: Ward, John Barrie; Noble, Hazel M.; Sutherland, Derek R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds are described of the formula (I), and salts thereof, wherein, R1 is methyl ethyl or isopropyl;, R2 is -H, or a group -OR5 (wherein -OR5 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms); and, R3 is -H, or R2 and R3 together with the carbon atom to which they are attached represent C=CH2 C=O, or C=NOR6 (where R6 is -H, alkyl or alkenyl and the C=NOR6 is in the E configuration); OR4 is as defined above for OR5, and one of the symbols X represents an epoxide oxygen atom and the other represents an epoxide oxygen atom or a carbon-carbon bond. These compounds may be used for controlling insect, acarine, nematode or other pests.
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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
- 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.