Novel antineoplastic agents
CA 2212237 A1 · Owner: Webster, John M. · Inventors: Chen, Genhui; Webster, John M.; Li, Jianxiong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds, isolated from the bacteria Xenorhabdus bovienii having the formula, (see fig. I) Or (see fig. II) wherein n=0,1, or 2;R1 = hydrogen, substituted or unsubstituted alkyl cycloalkyl, aryl, aralkyl, or heterocyclyl group; R2 = hydrogen substituted or unsubstituted alkyl, cycloalkyl aryl, aralkyl, heterocyclyl or group acyl,; R3 = hydrogen alkyl, cycloalkyl, aralkyl, aryl or heterocyclyl group or the salts thereof have antineoplastic activity. The invention provides pharmaceutical compositions containing the compounds and the methods for employing them as medicaments particularly in the treatment of human and animal cancers.
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
- Filed September 5, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2019.
- 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.