4-Hydroxy-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxides and salts thereof
Patent 4233299 Issued on November 11, 1980. Estimated Expiration Date: 
December 6, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 6, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3591584 3853862 3892740 3925371 3,4-Dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine-3-carboxylic acid-1,1-dioxide 2-[(N-2-pyridylcarbamoyl)methyl]saccharin Patent #: 4116964 InventorsAssigneeApplicationNo. 05/966963 filed on 12/06/1978US Classes:514/226.5, One of the cyclos is a 1,2-thiazine (e.g.,1,2-benzothiazines, etc.)544/49Benzothiazines (including hydrogenated)ExaminersPrimary: Ford, John M.Attorney, Agent or FirmInternational ClassesC07D 513/14 (20060101)C07D 417/00 (20060101) C07D 275/06 (20060101) C07D 513/00 (20060101) C07D 275/00 (20060101) C07D 279/00 (20060101) C07D 417/12 (20060101) C07D 279/02 (20060101) Foreign Application Priority Data1977-12-16 DEAbstractCompounds of the formula ##STR1## wherein R1 is hydrogen, methyl or ethyl;R2 is methyl, ethyl or n-propyl; andY is hydrogen, methyl, methoxy, fluorine or chlorine;and non-toxic, pharmacologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as their salts are useful as antiphlogistics. |
| ||||||||||||||
