Anthracycline derivatives having cytostatic activity
CA 1340422 C · Owner: Gerken, Manfred · Inventors: Bottger, Dirk; Kraemer, Hans Peter; Kolar, Cenek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new anthracycline derivatives having cytostatic activity and the general formula I, which are optionally in the form of a salt of an inorganic or organic acid, in which the substituents have the following meaning: R1 is hydrogen or a hydroxyl group, R2 is hydrogen or a hydroxyl or a methoxy group R3 is hydrogen or a hydroxyl group, R4 is hydrogen or a hydroxyl group R5 is hydrogen, a hydroxyl or a methoxycarbonyl group or a substituent of, the general formula II in which R8a has the meaning indicated for R8 or a substituent of the, formula III, -2- R6 is ethyl, methylcarbonyl, hydroxymethylcarbonyl hydroxyalkyl or, dihydroxyalkyl, R7 is hydrogen or a substituent of …
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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 March 9, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2016.
- 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.