Novel and known trifluoroacetyl-substituted phenyl, phenol and benzoyl compounds for the treatment and/or inhibition of obesity and of concomitant and/or secondary diseases involved therewith, in particular metabolic syndrome and cardiovascular diseases. Novel trifluoroacetyl-substituted phenyl, phenol and benzoyl compounds, pharmaceutical preparations containing them and processes for the preparation of these compounds. Also compounds acting as inhibitors of lipase, in particular pancreatic lipase.