Process for preparing optically active trans-3- phenylglycidamide compounds
CA 2199880 A1 · Owner: Matsumae, Hiroaki · Inventors: Idei, Akiko; Shibatani, Takeji; Nishida, Takuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a process for preparing optically active trans-3-phenylglycidamide compound, which comprises subjecting a racemic trans-3-phenylglycidamide compound of the formula (I) (I), wherein ring A is substituted or unsubstituted benzene and R1 is H or lower, alkyl, to optical resolution using a microorganism having the ability to preferentially hydrolyze one of (2S,3R) isomer or (2R,3S) isomer thereof and, process for preparing an optically active 1,5-benzothiazepine derivative from the thus-obtained optically active trans-3-phenylglycidamide compound. The 1,5-benzothiazepine derivatives of the present invention are useful as medicaments.
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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
- Filed March 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2019.
- 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.