The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 1992
Filed:
May. 13, 1991
Gerald Kirsch, Berlin, DE;
Henry Laurent, Berlin, DE;
Rudolf Wiechert, Berlin, DE;
Sybille Beier, Berlin, DE;
Walter Elger, Berlin, DE;
James R Bull, Pretoria, ZA;
Gunter Neef, Berlin, DE;
Schering Aktiengesellschaft, Berlin and Bergkamen, DE;
Abstract
##STR1## New 14.alpha.,17.alpha.-ethano-estratrienes of general formula (I) wherein R.sup.1 is a hydrogen atom, an alkyl or acyl group with 1 to 12 carbon atoms, R.sup.2 is a hydrogen atom or a methyl group, R.sup.3 is a hydrogen atom or an acyl group with 1 to 12 carbon atoms and (a) is either (II) or (III), where R.sup.4 is an alkyl residue in the .alpha. or .beta. position with 1 to 8 carbon atoms or an .alpha.,.beta.-alkenyl residue which may contain several double bonds or an .alpha.,.beta.-alkinyl residue, both with 2 to 8 carbon atoms, are described. Also described is a process for producing them. These new compounds have a marked oestrogenic activity.