Process for the preparation of (2s,3s)-3-acetoxy-5-(n, n-dimethylaminoethyl)-2-(4-methoxyphenyl)-2,3-dihydro- 1,5-benzothiazepin-4(5h)-one
CA 1309714 C · Owner: Richter Gedeon Vegyeszeti Gyar Rt · Inventors: Vincze, Zsuzsanna; Harsanyi, Kalman; Felmeri, Jozsef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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PROCESS FOR THE PREPARATION OF /2S,3S/-3-ACETOXY-5- -/N,N-DIMETHYLAMINOETHYL/-2-/4-METHOXYPHENYL/-2,3- -DIHYDRO-1,5-BENZOTHIAZEPIN-4/5H/-ONE, A b s t r a c t The invention relates to a new process for the preparation of /2S,3S/-3-acetoxy-5-/N,N-dimethylaminoethyl/-2-/4-methoxyphenyl/-2,3-dihydro-1,5-benzothiazepin-4/5H/-one of the formula /I/ (1), and acid addition salts thereof, by a/ alkylation and acetylation of /2S,3S/-3- -hydroxy-2-/4-methoxyphenyl/-2,3-dihydro-1,5-benzothiazepin-4/5H/-one of the formula /III/ (111), in an optional order, or, b/ alkylation of 3-acetoxy-2-/4-methoxyphenyl/- -2,3-dihydro-1,5-benzothiazepin-4/5H/-one of the formula /V/, (V), and if desired, conversion of …
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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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
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