Disclosed is the use of a compound of formula (I) in the manufacture of a medicament for treating anxiety wherein X is CH2 or CH2-CH2, A is aryl or heteroaryl having 0, 1, 2, or 3 atoms selected from the group consisting of N, S, and O, wherein A has 0, 1, 2, or 3 substituents independently selected from the group consisting of 0 to 8 carbon atoms, from 0 to 3 oxygen atoms, from 0 to 3 halogen atoms, from 0 to 2 nitrogen atoms, from 0 to 2 sulfur sulphur atoms, and from 0 to 24 hydrogen atoms. Anxiety disorders include generalized anxiety disorder, obsessive-compulsive disorder, panic disorder, a phobic disorder, acute stress disorder, post-traumatic stress disorder, or mixed anxiety-depression. A is preferably pyridinyl, thienyl, furyl, quinolinyl, methylphenyl, or biphenyl
