1-(4-aminophenyl)-4-methyl-7,8-methylenedioxy-3,4- dihydro-5h-2,3-benzodiazepine and a process for preparing same
CA 1284322 C · Owner: Borsy, Jozsef · Inventors: Lang, Tibor; Elekes, Istvan; Borsy, Jozsef
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 1-/4-aminophenyl/-4- -methyl-7,8-methylenedioxy-3,4-dihydro-5H-2,3-benzodiazepine of formula /I/, optically active isomers and acid addition salts thereof as well as to pharmaceutical compositions containing these compounds. /I/ The new compounds of formula /I/ can be prepared by reducing l-/4-aminophenyl/-4-methyl-7,8-methylenedioxy- -5H-2,3-benzodiazepine of formula /II/ with an inorganic or organic-inorganic and/or complex metal hydride and if desired, separating the optically active forms of the compound of formula /I/ thus-obtained and if desired, converting the base or bases into acid addition salts or converting the salts into the free base/s/. /II/ The …
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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 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
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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.