Epipodophyllotoxin glucoside 4'-phosphate derivatives
CA 1310637 C · Owner: Kadow, John F. · Inventors: Kadow, John F.; Senter, Peter D.; Saulnier, Mark G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Phosphate derivatives of 4'-demethylepipodophyllotoxin glucosides are novel antitumor agents and the salts thereof offer the pharmaceutical advantage of high water solubility. Such agents have the following formula: wherein, R6 is H and R1 is selected from the group consisting of (C1-10)alkyl; (C2-10) alkenyl; (C56)cycloalkyl; 2-furyl; 2thienyl; (C6-10)aryl; (C7-14)aralkyl; and (C8-14)aralkenyl wherein each of the aromatic rings may be unsubstituted or substituted with one or more groups selected from halo (C1-8)alkyl, (C1-8)alkoxy, hydroxy, nitro and amino; or R1, and R6 are each (C1-8) alkyl; or R1 and R6 and the carbon to which they are attached join to form a (C5-6) cycloalkyl group;, X …
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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
- 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.