Patent ID: 8883853

Claim:
A method for treating or preventing nociceptive pain selected from somatic pain, visceral pain, and myofascial pain in a human or non-human animal patient in need thereof, which method comprises administering to said patient a therapeutic effective amount of at least one compound represented by formula I: or a pharmaceutically acceptable salt thereof in which: represents a single or a double bond; and R 5 and R 5 ′ are independently —H, —OH or —OR 6 , where R 6 is a linear or branched C 1 -C 4 alkyl; X is —O—, —CH 2 O—, —CH 2 CH 2 O—, —CH(CH 3 )CH 2 O— or —CH 2 CH(CH 3 )O—; Z is —CH 2 CH 2 O—, —CH(CH 3 )CH 2 O— or —CH 2 CH(CH 3 )O—; m is an integer of 0 or 1; and n is 1-50.