Hexapeptides deriving from aglucoteicoplanin and a process for preparing them
CA 2096112 C · Owner: Gruppo Lepetit S.P.A. · Inventors: Ciabatti, Romeo; Malabarba, Adriano
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hexapeptides of formula (1) deriving from aglucoteicoplanin and their salts with acids and bases as well as their inner salts, wherein R is hydrogen or a protecting group of the amino moiety. The products of formula (I), wherein R is hydrogen pos-, sess antimicrobial activity in particular against coagulase-negative strains and some S. aureus and S. epidermidis strains which have low sensitivity toward teicoplanin. The hexapeptides are produced by reductive cleavage of aglucoteicoplanin with alkali metal borohydrides in the presence of a hydroalcoholic mixture as solvent.
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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 November 21, 1991 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2013.
- 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.