Spirocyclic cyclohexane compounds corresponding to formula I
in which R
1
and R
2
form a pyrrolidine ring or an azetidine ring and which exhibit increased metabolic stability, a process for producing such spirocyclic cyclohexane compounds, pharmaceutical compositions containing such spirocyclic cyclohexane compounds, and the use of such spirocyclic cyclohexane compounds to treat or inhibit pain and/or other disorders.