Triazinylpiperazinyl amine intermediates
Patent 5268477 Issued on December 7, 1993. Estimated Expiration Date: 
November 19, 2012. 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.
November 19, 2012. 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 References19-nor-3-keto steroids Patent #: 5108996 Inventors
AssigneeApplicationNo. 977768 filed on 11/19/1992US Classes:544/182, Asymmetrical (e.g., 1, 2, 4-triazines, etc.)544/198, Hetero ring544/212, Hetero ring544/360, Six-membered ring consisting of one nitrogen and five carbons (e.g., pyridine, etc.)544/364, At least three hetero rings containing544/366, Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen544/372, Five-membered hetero ring consisting of one nitrogen and four carbons544/376, Bicyclo ring system having the additional hetero ring as one of the cyclos544/379The additional hetero ring is five-membered and unsaturated (e.g., thienyl piperazines, etc.)ExaminersPrimary: Ivy, C. WarrenAssistant: Turnipseed, James H. Attorney, Agent or FirmInternational ClassA61K 031/13AbstractThe claimed invention is to triazin-2-yl and triazin-3-yl piperazines which are useful intermediates in the preparation of amino substituted steroid (XI) which are useful pharmaceutical agents.Other References
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