Steroid derivatives
Patent 5391776 Issued on February 21, 1995. Estimated Expiration Date: 
February 10, 2013. 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.
February 10, 2013. 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.InventorsAssigneeApplicationNo. 015800 filed on 02/10/1993US Classes:552/507, The phosphorus is bonded directly at the 21-position or is bonded directly to a chalcogen which is bonded directly at the 21-positon552/506Phosphorus attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bondingExaminersPrimary: Killos, Paul J.Attorney, Agent or FirmForeign Patent References
International ClassC07J 051/00Foreign Application Priority Data1992-02-14 JPAbstractAsteroid derivative of the general formula: ##STR1## wherein X--O-- represents a residue of steroid compound and --A-- represents --CO[NH(CHR1)y --(Y)p --CO]m NH--, --CO--(R2)x --(Z)q --CO--NH--, or --CO--(CH2)n --. A therapeutic agent to osteopathy comprising the above steroid derivative is also provided.Other References
Field of SearchThe phosphorus is bonded directly at the 21-position or is bonded directly to a chalcogen which is bonded directly at the 21-positonPhosphorus attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding Two or more phosphorus atoms directly or indirectly bonded together by only covalent bonds Benzene ring containing |
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