Benzoxazine derivatives
Patent 4382892 Issued on May 10, 1983. Estimated Expiration Date: 
September 2, 2001. 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.
September 2, 2001. 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 3883522 Substituted pyrido[1,2,3,-de]-1,4-benzoxazines as bactericides Patent #: 3984548 InventorsAssigneeApplicationNo. 06/298816 filed on 09/02/1981US Classes:540/575, The nitrogens are in the 1,4-positions of the hetero ring544/101, Tricyclo ring system having the oxazine ring as one of the cyclos544/73, Polycyclo ring system having oxazine ring as at least one of the cyclos548/950The hetero ring contains four members including nitrogen and carbonExaminersPrimary: Raymond, Richard L.Attorney, Agent or FirmInternational ClassesC07D 498/00 (20060101)C07C 205/37 (20060101) C07C 205/00 (20060101) C07D 265/36 (20060101) C07D 265/00 (20060101) C07D 498/06 (20060101) Foreign Application Priority Data1980-09-02 JPAbstractPyrido[1,2,3-de][1,4]benzoxazine derivatives are described having the formula (I) ##STR1## wherein X is a halogen atom, R is a hydrogen atom or an alkyl group of 1 to 6 carbon atoms and Z represents mono-substituted, di-substituted or cyclic-substituted amino group which may contain a hetero atom and may have a substituent such as hydroxyl, alkyl having 1 to 6 carbon atoms, amino, hydroxyalkyl having 1 to 6 carbon atoms or mono- or di-alkylamino having 1 to 6 carbon atoms in each alkyl moiety and the pharmaceutically acceptable salt thereof, having antibacterial activity. |
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