1-oxa-2-oxo-3-r-3-aza-5-z-cyclopentane derivative
CA 1286677 C · Owner: Bokel, Heinz-Hermann · Inventors: Bokel, Heinz-Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-Oxa-2-oxo-3-R-3-aza-5-Z-cyclopentane derivatives A B S T R A C T, The invention relates to new 1-oxa-2-oxo-3-R-3-aza-5-Zcyclopentane derivatives, having the following formula: wherein, R is alkyl or hydroxyalkyl having in each case 1-6 C atoms cycloalkyl having 3-8 C atoms, unsubstituted aryl or aralkyl or aryl or aralkyl each of which has a total of 6-15 C atoms and, in the aryl radical, is monosubstituted to trisubstituted by alkyl, alkoxy, OH and/or Cl or monosubstituted by methylenedioxy, Z is -(CHOH)n-H and n is 2, 3, 4 or 5, and which can be used as intermediate products for the preparation of active compounds for medicaments, such as toloxatone.
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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.