Aglycons useful for the preparation of antibiotics and antitumoral agents of the anthracyclin series and process for their preparation
CA 1254885 A · Owner: Laboratoires Hoechst S.A. · Inventors: Mondon, Martine; Abdallah, Abdallah A.; Jacquesy, Jean-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure The present invention relates to new aglycons which correspond to the general formula: in which:, - R1, R2, R3 and R5, which can be identical or different, represent a hydrogen atom or a group OH OMetal or OR4, R4 being a substituted or unsubstituted C1 to C4 alkyl group, - R represents a hydrogen atom or a group COCH2R' R', being hydrogen or an alkyl, hydroxyl alkoxy or aryl, group, - R6 and R7, which are always different represent either a hydrogen atom or an OH group, and - R8 represents a hydrogen atom or the group CH3CO-. Application to the preparation of antibiotics and antitumoral agents.
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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 May 30, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2006.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.