Details for Patent: 4,474,787

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

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

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

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	3573178
Australia	520816
Belgium	866622
Canada	1112644
Switzerland	634071