13-alkyl-11.beta.-phenyl-gonanes of general formula I ##STR1## wherein A and B together stand for an oxygen atom, a CH.sub.2 group or a second bond between carbon atoms 9 and 10, X is an oxygen atom or the hydroxyimino grouping N.about.OH, R.sub.1 is a straight-chained or branched, saturated or unsaturated alkyl radical with up to 8 carbon atoms, which contains the grouping ##STR2## with X as described above, R.sub.2 is a methyl or ethyl radical in the .alpha. or .beta. position, R.sub.9, R.sub.10, R.sub.11 and R.sub.12 each stand for a hydrogen atom, a hydroxy, alkyl, alkoxy or acyloxy group with 1 to 4 carbon atoms respectively or a halogen atom and R.sub.3 and R.sub.4 have a variety of meanings, have antigestagenic and antiglucocorticoid effects.
通式I中的13-烷基-11-β-苯基-戈南烷,其中A和B共同代表氧原子、CH.sub.2基团或碳原子9和10之间的第二键,X是氧原子或羟
肟基团N.about.OH,R.sub.1是直链或支链、饱和或不饱和的烷基基团,含有上述X的基团##STR2##,R.sub.2是α或β位的甲基或乙基基团,R.sub.9、R.sub.10、R.sub.11和R.sub.12分别代表氢原子、羟基、烷基、烷氧基或酰氧基,其碳原子分别为1至4,或卤素原子,R.sub.3和R.sub.4具有各种含义,具有抗孕激素和抗糖皮质激素效果。