The present invention relates to pharmaceutical compositions comprising a pharmaceutically acceptable carrier or diluent and a compound of formula I wherein A together with the double bond of formula I is benzene or thiophene; R1 is optionally substituted C1-6 alkyl or optionally substituted aryl; R2 is optionally substituted C1-6-alkyl, optionally substituted aralkyl, or —COR3, wherein R3 is optionally substituted C1-6-alkyl, optionally substituted aralkyl, or optionally substituted aryl; R4 and R5 independently are hydrogen, halogen, perhalomethyl, optionally substituted C1-6-alkyl, hydroxy, optionally substituted C1-6-alkoxy, nitro, cyano, amino, optionally substituted mono- or optionally substituted di-C1-6-alkylamino, acylamino, C1-6-alkoxycarbonyl, carboxy or carbamoyl; n is 0, and m is 1, and methods of treating or preventing a disease of the endocrinologic system.