The invention relates to novel compounds which are both phosphodiesterase 4 (PDE4) enzyme inhibitiors and muscarinic M3 receptor antagonists, methods of preparing such compounds, compositions containing them and therapeutic use thereof.本發明係關於既為磷酸二酯酶4(PDE4)酵素抑制劑亦為毒蕈鹼M3受體拮抗劑之新穎化合物,製備該等化合物之方法,含有該等化合物之組成物及其治療用途。