Thienamycin analogues
CA 1192202 A · Owner: Richter Gedeon Vegyeszeti Gyar Rt · Inventors: Nyitrai, Jozsef; Hornyak, Gyula; Szporny, Laszlo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New thienamycin analogues of the general formula (I), (I), wherein, Y1 and Y2 represent a removable carbonyl protecting group, Q' is a C1-5 alkyl group, a substituted benzyl group, hydrogen atom or an alkali metal ion, and, R" is an optionally substituted hydrocarbyl residue, are prepared in such a way that a) a compound of the general formula (II) wherein Y1 and Y2 are as defined above and Q is a C1-5 alkyl group or a substituted benzyl group is treated, with an O-acylating agent and then with a mercaptan in the presence of a tertiary amine, and the resulting - 2 -, product is separated, or, b) the substituted benzyl moiety of a compound of the general formula (I), wherein Q is a …
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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 August 20, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2002.
- 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.