Desoxycyclodepsipeptides and their use for combatting endoparasites
CA 2292698 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Von Samson-Himmelstjerna, Georg; Mencke, Norbert; Scherkenbeck, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel desoxycyclodepsipeptides of formula (I) in which C=X1, C=X2, C=X3 and C=X4 independently of each other respectively represent one of the CO, CS or CH2 groups with at least one of these groups , representing CH2. The invention also relates to their mixtures and derivatives. Said compounds are produced from cyclodepsipeptides having 24 ring members formed by alternating .alpha.-amino carboxylic acids and .alpha.hydroxy carboxylic acids by complete or partial chemoselective reduction of the carbonyl groups of the amide function into methylene groups using , suitable reduction methods. The desoxycyclodepsipeptides produced according to the invention have an …
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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 May 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2020.
- 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
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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.