Substituted piperazinylimino rifamycins
CA 1053226 A · Owner: Gruppo Lepetit S.P.A. · Inventors: Arioli, Vittorio; Cricchio, Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to rifamycin derivatives of the formula wherein Me represents a methyl group and Z represents alkenyl of 3 to 5 carbon atoms or alkynyl of 3 to 5 carbon atoms. These compounds are prepared by reacting 3-formylrifamycin SV with an aminopiperazine of the formula: wherein Z is as previously defined. The novel rifamycin derivatives of this invention are useful because they possess the usual broad spectrum activity peculiar to rifamycin derivatives coupled with extremely high activity and low toxicity permitting control of bacterial infections by oral administration with long intervals between doses, for example it has been found that a, single weekly dose will give …
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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 April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
- 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.