Details for Patent: 3,883,545

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Summary for Patent: 3,883,545

Title:	Certain 1-hydroxy-2-pyridones
Abstract:	New 1-hydroxy-2-pyridones of the general formulaIN WHICH R1 is alkyl of 1 to 17 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, cyclohexylalkyl or phenalkyl both having 1 to 3 carbon atoms in the alkylene chain or Alpha -furyl, all of which may be substituted by halogen and R2 to R4 are hydrogen or lower alkyl or 2 adjacent substituents together form a trimethylene or tetramethylene chain, and in which R1 to R4 together contain at least 2 carbon atoms, are prepared by contacting unsaturated delta -keto esters or mixtures thereof with hydroxylamine and subjecting the products to cyclization. The compounds exhibit antimycotic properties.
Inventor(s):	Gerhard Lohaus, Walter Dittmar
Assignee:	Hoechst AG
Application Number:	US317387A
Patent Claim Types: see list of patent claims	Compound;

Drugs Protected by US Patent 3,883,545

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: 3,883,545

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
	1795270	Aug 31, 1968

International Family Members for US Patent 3,883,545

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	291260
Belgium	738288
Brazil	6911968
Switzerland	547284
Czechoslovakia	150278