Compounds having the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms and Z represents a formyl group --CHO or a hydroxyl group or a group OR.sub.1 wherein R.sub.2 represents an acyl group having from 1 to 6 carbon atoms, have been discovered to possess attractive fruity-floral odors. They are useful as ingredients of compounded perfumery compositions.