5-nitrobenzo de isoquinoline-1.3-diones, their preparation and their use
CA 1331382 C · Owner: Knoll Ag · Inventors: Schlick, Erich; Moset, Marina Moran; Fernandez, Miguel Brana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel 5-nitrobenzo-deisoquinoline- 1,3-dione of the formula (I):, (I), where n is 1 or 2 R1 and R2 are identical or different and are each hydrogen, C1-C6-alkyl, C1-C6-hydroxyalkyl pyrrolidinyl, morpholino, piperidinyl or piperacinyl and R3 and R4 are identical or different and are each hydrogen C1-C6-alkyl, C1-C6-acyl, C2-C7-alkoxycarbonyl ureyl, amino-, carbonyl or C2-C7-alkylaminocarbonyl and its salts with, physiologically tolerated acids. These derivatives are suitable for the treatment of diseases especially du to, their anti-tumor properties.
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
- Granted August 9, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 9, 2011.
- 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.