Hydroxyamino-eburnane derivatives and a process for the preparation thereof
CA 1195978 A · Owner: Richter Gedeon Vegyeszeti Gyar Rt · Inventors: Dancsi, Lajos; Keve, Tibor; Gazdag, Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel indoloquinolisines of formula wherein A stands for hydrogen or a C-N bond and when A is a C-N bond then the nitrogen atom bears a positive charge balanced by a negatively charged acid residue X-, Y stands for hydrogen or a group of the formula -CH2CH(COORl)2 R1 and R2 both stand for C1-6 alkyl groups R3 is the same as R1 or, when Y, and A are both hydrogen atoms R3 can also be hydrogen. The novel indoloquinolisines are valuable intermediates in the preparation of novel hydroxyamino-eburnane compounds which display pharmaceutical activity as peripheral vasodilating activity and which can be converted into other compounds e.g. vincamine and apovincamine …
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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 October 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2002.
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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.