abstract |
14$g(a),17$g(a)-(propano and 17?2-propeno) estratrienes of the general formula (I), in which R?1 is a hydrogen atom, a methyl or acyl group with 1-12 carbon atoms, R?2 is a hydrogen atom or an acyl group with 1-12 carbon atoms and (a) is a C-C single or double bond. The novel compounds of the general formula (I) are oestrogenically active like ethinyl estradiol. |