Antiestrogenic and antiandrugenic benzothiophenes
Patent 4418068 Issued on November 29, 1983. Estimated Expiration Date: 
December 16, 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.
December 16, 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 3920707 Substituted benzofurans and benzothiophenes Certain 4-(3-azacycloalkoxy or azacycloalkylmethoxy)benzoylbenzofurans or benzothiophenes Substituted benzofurans and benzothiophenes Antifertility compounds 2-Phenyl-3-aroylbenzothiophenes useful as antifertility agents Antifertility compounds Patent #: 4230862 InventorAssigneeApplicationNo. 06/331042 filed on 12/16/1981US Classes:514/337, The additional hetero ring is one of the cyclos in a polycyclo ring system546/202, Ring sulfur in the polycyclo ring system546/237, The chalcogen, X, is in a -C(=X)- group549/51Chalcogen attached directly to the bicyclo ring system by nonionic bondingExaminersPrimary: Schwartz, Richard A.Attorney, Agent or FirmInternational ClassesC07D 333/56 (20060101)C07D 333/00 (20060101) Abstract6-Hydroxy-2-(4-hydroxyphenyl)-3-[4-(2-piperidinoethoxy)benzoyl]benzo[b]thio phene, its ethers and esters, and the physiologically acceptable acid addition salts thereof, are valuable antiestrogens and antiendrogens.Other References
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