PROCESS FOR PREPARING ETHYL-.alpha.-(1-CARBOXYETHYL)AMINO- -OXO- -PHENYLBUTYRATE
CA 1286308 C · Owner: Yamane, Takehiko · Inventors: Yamada, Yukio; Ueda, Yasuyoshi; Shimada, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing ethyl-.alpha.-(1-carboxyethyl)amino-.gamma.-oxo-.gamma.-phenylbutyrate which comprises, reacting an alkali metal salt an alkaline earth metal, salt or a quaternary ammonium salt of alanine with ethyl-.beta.-benzoylacrylate and a process for preparing ethyl-.alpha.-(1-carboxyethyl)amino-.gamma.-phenylbutyrate which, comprises catalytically reducing ethyl-.alpha.-(1-carboxyethyl)amino-.gamma.-oxo-.gamma.-phenylbutyrate. The compounds are useful for preparing angiotensin converting enzyme (ACE) inhibitory agents.
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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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 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.