Steroid 5-alpha-reductase inhibitors
July 28, 2007. 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 2897202 N-substituted-17ଲ-carbamoylandrost-4-en-3-one 5 reductase inhibitors Preparation of 4-aza-17-substituted-5-androstan-3-ones useful as 5-reductase inhibitors Novel steroid 5-reductase inhibitors 4-Aza-17ଲ-substituted-5-androstan-3-one-reductase inhibitors Steroidic 5-reductase inhibitors 17ଲ-N-monosubstituted carbamoyl-4-aza-5-androst-1-en-3-ones which are active as testosterone 5-reductase inhibitors Patent #: 4760071 InventorsApplicationNo. 007539 filed on 07/28/1987US Classes:514/278, Spiro ring system514/284, Tetracyclo ring system having the six-membered hetero ring as one of the cyclos514/859, Acne546/16, The spiro includes the six-membered hetero ring546/77, The six-membered hetero ring shares ring members with one other cyclo only546/78Plural chalcogens bonded directly to carbocyclic rings of the tetracyclo ring system (e.g., pyridoanthraquinones, etc.)ExaminersPrimary: Shah, Mukund J.Assistant: Rozycki, Andrew G. Attorney, Agent or FirmInternational ClassesA61K 031/58C07J 073/00 AbstractInvented are 4-aza-5-alpha-8(14)-17 substituted-androsten-3-ones having an 8(14), 7(8), or 16(17) double bond, optionally also having a 1(2) double bond, pharmaceutical compositions containing the compounds, and methods of using these compounds to inhibit steroid 5-alpha-reductase.Other References
Field of SearchThe six-membered hetero ring shares ring members with one other cyclo onlyPlural chalcogens bonded directly to carbocyclic rings of the tetracyclo ring system (e.g., pyridoanthraquinones, etc.) The spiro includes the six-membered hetero ring Tetracyclo ring system having the six-membered hetero ring as one of the cyclos Spiro ring system |
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