Substituted 2-(3-alkenyl-benzoyl)-cyclohexane-1,3-diones
CA 2289114 A1 · Owner: Engel, Stefan · Inventors: Engel, Stefan; Mayer, Guido; Witschel, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to 2-(3-alkenyl-benzoyl)-cyclohexane-1,3-diones of formula (I), wherein the variables can have the following meanings: R1 R2 = , hydrogen, nitro, halogen, cyano rhodano, alkyl, halogen alkane, alkoxyalkyl alkenyl, alkinyl, -OR6, -OCOR7, -OSO2R7 -SH, -S(O)nR8, -SO2OR6, -SO2NR6R9, -, NR9SO2R7 or -NR9COR7; R3 = hydrogen halogen, alkyl, halogen alkane, alkoxy alkenyl, alkinyl; R4, R5 = hydrogen, nitro halogen, cyano, rhodano, alkyl, halogen alkane cycloalkyl, alkenyl, cycloalkenyl, alkinyl alkythio, halogen , alkoxy, -COR10, -CO2R10 -COSR10, -C(R12)=NR13, -PO(OR10) (OR11); optionally substituted alkyl, heterocyclyl, heterocyclylalkyl phenyl, phenylalkyl, hetaryl or …
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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
- Filed April 24, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2020.
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Timeline
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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.