Patent ID: 7557117

Claim:
A method for treating circadian rhythm disorder, which comprises administering an effective amount of a compound selected from the group consisting of 4-(3 -fluorophenyl)-(3 S* or 3R*)-3 -(2-hydroxyethyl)-8-(1,1,3,3 -tetramethylbutyl)-1,4,8-triazaspiro[4.5]decan-2-one, 4-(3-fluorophenyl)-8-(1,1,3,3-tetramethylbutyl)-1,4,8-triazaspiro[4.5]decan-2-one, 4-phenyl-8-(1,1,3,3-tetramethylbutyl)-1,4,8-triazaspiro[4.5]decan-2-one, 4-phenyl-8-(1-ethylpentyl)-1,4,8-triazaspiro[4.5]decan-2-one, and 8-decahydranaphthalen-2-yl-4-phenyl-1,4,8-triazaspiro[4.5]decan-2-one, or a salt thereof, to a patient in need thereof.