The invention provides new heterocyclic compounds having the general formula (I)wherein A, L, X, m, n, R1and R2are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.本發明提供具有通式(I)之新穎雜環化合物(其中A、L、X、m、n、R1及R2如本文所述)、包括該等化合物之組合物、製造該等化合物之方法及使用該等化合物之方法。