The present invention relates to a compound according to formula I, wherein X, A, G, E, R1, R2, R3 are as shown herein; and pharmaceutically acceptable salts, hydrates, N- oxides or solvates hereof, said compounds are used as phoshodiesterase inhibitors in particular PDE4 inhibitors. The invention further relates to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds, to methods of treating diseases, e.g. dermal diseases, with said compounds, and to the use of said compounds in the manufacture of medicaments.