Macrolide compounds
CA 1340918 C · Owner: Tiley, Edward P. · Inventors: Bell, Richard; Howes, Peter D.; Ramsay, Michael V.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I), (see formula I) wherein R represents a hydrogen atom or a silyl group; R1 represents a methyl, ethyl or isopropyl group; Y1 is -CH2-, Y2 is -CH- and X represents -C(R2)(R3)- where R2 represents a hydrogen atom or a group OR6 (where OR6 is a hydroxy group or a substituted hydroxyl group having up to 25 carbon atoms) and R3 represents a hydrogen atom or, R2 and R3 together with the carbon atom to which they are attached represents >C=O, >C=CH2 or >C=NOR7 (where R7 represents a hydrogen atom or a C1-8 alkyl group and the group >C=NOR7 is in the E configuration) or -Y1-X-Y2- represents -CH=CH-CH- or -CH2-CH=C-;, R4 represents a group OR6 as defined above and R5 …
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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 7, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2017.
- 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.