Cyclic ether derivatives having an anti-shock activity or a paf-antagonistic activity
CA 1320200 C · Owner: Nakamura, Norio · Inventors: Nakamura, Norio; Miyazaki, Hideki; Koike, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Compounds of formula (I):, (I) wherein: 1 is Z - 4; A and B are oxygen or sulfur; one of R1 and R2 represents a long chain alkyl alkylcarbamoyl or aliphatic acyl group and the other of R1 and R2 represents a group of formula (III): (III), in which E represents a single bond a bivalent, heterocyclic group or a group or formula -CO- -COO- or, -CONR6-, where R6 is hydrogen or an imino-protecting group; m is 0 - 3; n is 0-10; q is 0 or 1; R4 is optionally protected hydroxy, mercapto group or carboxy; and Q is an amino or nitrogen-containing hetrocyclic group are PAF antagonists which may be used to treat asthma, hypotension, inflammation and shock. They may be prepared by introducing the …
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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 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.