Octahydro pyrazolo (3,4,-g) quinolines
CA 1136629 A · Owner: Eli Lilly And Company · Inventors: Bach, Nicholas J.; Kornfeld, Edmund C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Octahydropyrazolo3,4-gquinolines dopamine, agonists, useful in treatment of Parkinsonism and in inhibiting secretion of prolactin, are described herein. These novel compounds are prepared by reacting a corresponding 7-dimethylaminomethylene-6oxo-derivative with hydrazine hydrate. Also disclosed herein are intermediates of the formula XII, wherein R is (C1-C3) alkyl, allyl or benzyl and Z' is (C1-C2) alkyl, benzyl, phenethyl or p-methoxybenzyl. These intermediates are prepared by a process which comprises subjecting a compound of general formula XI: XI, wherein R and Z' are defined as before and Z is (C1-C3), alkyl, (C2-C3) alkenyl (C2-C3) alkynyl, (C5-C6) …
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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 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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
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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.