| abstract |
The present invention relates to compounds of the general formula (I); wherein R1 is selected from any of pyridinyl, thienyl, furanyl, imidazolyl and triazolyl; wherein each heteroaromatic ring R1 may optionally and independently be further substituted by 1, 2 or 3 substituents selected from linear and branched C1-C6 alkyl, NO2, CF3, C1-C6 alkoxy, chlorine, fluorine, bromine, and iodine. Substitutions in the heteroaromatic ring can take place in any position in the ring systems; In this application, as well as, separate enantiomers of the compounds and salts and pharmaceutical compositions comprising the new compounds and their use in therapy, in particular in pain management, are described and claimed. |