Hexahydropyrrolo¬1,2-c pyrimidines as antiviral, antifungal and/or antitumor agents
CA 2376758 A1 · Owner: Stappenbeck, Frank · Inventors: Overman, Larry A.; Stappenbeck, Frank; Mcdonald, Andrew I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved methods for convergent, total enantioselective synthesis of guanidinium alkaloid compounds including ones having <i>cis</i>- or - <i>trans</i>-1-oxo- and 1-iminohexahydropyrrolo1,2-cpyrimidine units including, 13,14,15-isocrambescidin 800 crambescidin 800 and ptilomycalin A, for use as therapeutic agents having antifungal and/or antiviral and/or antitumor activity are provided. Methods for preparing novel pentacyclic intermediates for the preparation of the crambescidin/ptilomycalin family of guanidinium alkaloids and congeners are also disclosed.
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 June 30, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2022.
- 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.