| abstract |
The use of compounds of formula (I), wherein R1 is a straight, branched or cyclised C1-5 alkyl radical, and R2 is a hydrogen atom, a straight or branched C1-5 alkyl radical, a hydroxyl radical, a C1-5 alkoxy radical or a C1-2 hydroxyalkyl radical, and R3 is a hydrogen atom, or R2 and R3 are both a C1-5 alkyl radical, said compounds having a 2R configuration; racemic forms comprising said compounds; and pharmaceutically acceptable salts thereof; for making a drug for the treatment of visceral pain, is disclosed. |