Patent ID: 8367722

Claim:
A method of treating a disease or disorder selected from neuropathic pain, anxiety, ethanol withdrawal syndrome, insomnia, and epilepsy comprising administering to a patient in need thereof a compound of formula (VIII): or a pharmaceutically acceptable salt thereof, wherein: n=0; R 7 and R 14 are each hydrogen; R 13 is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and sec-butyl; and R 25 is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, n-pentyl, isopentyl, sec-pentyl, neopentyl, phenyl and 1,1-diethoxyethyl.