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Generated: July 25, 2017
| Title: | 7,6 Dioxo-4H,6H-pyrano[3,2-g]quinoline dicarboxylic acids and anti-allergic use thereof |
| Abstract: | There are described compounds of formula I ##STR1## in which an adjacent pair of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 form a chain --COCH.dbd.CE--O--, and the remainder of R.sub.5, R.sub.6, R.sub.7 and R.sub.8, which may be the same or different, each represent hydrogen, hydroxy, alkyl, halogen, alkenyl, alkoxy, or --NR.sub.1 R.sub.2 in which R.sub.1 and R.sub.2, which are the same or different, are each hydrogen or alkyl, Rg is hydrogen, alkyl, alkenyl or phenyl-alkyl, and E is --COOH, a 5-tetrazolyl group or an (N-tetrazol-5-yl) carboxamido group, and pharmaceutically acceptable derivatives thereof. There are also described processes for making the compounds and pharmaceutical, e.g. anti-allergic, compositions containing the compounds. |
| Inventor(s): | Cairns; Hugh (Loughborough, GB2), Cox; David (Loughborough, GB2) |
| Assignee: | Fisons Limited (GB2) |
| Application Number: | 06/344,982 |
|
Patent Claim Types: see list of patent claims | Compound; Use; Composition; Dosage form; |
| Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Australia | 3573178 | ► Subscribe | |||||||||||||||||||||||||||
| Australia | 520816 | ► Subscribe | |||||||||||||||||||||||||||
| Belgium | 866622 | ► Subscribe | |||||||||||||||||||||||||||
| Canada | 1112644 | ► Subscribe | |||||||||||||||||||||||||||
| Switzerland | 634071 | ► Subscribe | |||||||||||||||||||||||||||
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
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