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Generated: April 26, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,474,787

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Summary for Patent: 4,474,787

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;

Drugs Protected by US Patent 4,474,787

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Patent Submitted
Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Patent Submitted

Foreign Priority and PCT Information for Patent: 4,474,787

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
United Kingdom	18597/77	May 04, 1977
United Kingdom	48565/77	Nov 04, 1977
United Kingdom	16168/78	Apr 25, 1978

International Family Members for US Patent 4,474,787

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Country	Document Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Finland	70899	➤ Sign Up
Finland	781346	➤ Sign Up
Spain	8707222	➤ Sign Up
Spain	556218	➤ Sign Up
Country	Document Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration

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