Process for the preparation of homonojirimycin derivatives
CA 1314894 C · Owner: Merrell Dow Pharmaceuticals (Canada) Inc. · Inventors: Creemer, Laura J.; Daniel, John K.; Liu, Paul S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A procedure for the mild conversion of a carbonitrile to the corresponding carboxylic acid by first using trifluoroacetic acid in the presence of a catalytic amount of mercuric ion followed by oxidative hydrolysis with dinitrogen tetroxide is described herein. The use of this procedure in the preparation of 1,3,4,5-tetra-O-benzoyl- 2,6-dideoxy-2,6-imino-D-glycero-L-gulo-heptitol hydrochloride is also described here. M01356
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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 March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
- 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.