Compounds of formula I are selective cyclic nucleotide phosphodiesterase (PDE) inhibitors (namely of type IV). They and pharmaceutical compositions in which they are active ingredients are useful as bronchial therapeutics, for elimination of erectile dysfunction and for treatment of disorders, particularly those of inflammatory nature. The compounds are distinguished by low toxicity, good enteral absorption (high bioavailability), a great therapeutic breadth and the absence of significant side effects.
式I的化合物是选择性环状核苷酸
磷酸二酯酶(PDE)
抑制剂(特别是IV型)。它们和含有它们作为活性成分的制药组合物在支气管治疗、消除勃起功能障碍和治疗炎症性疾病方面是有用的。这些化合物具有低毒性、良好的肠道吸收(高
生物利用度)、广泛的治疗范围和无显著副作用的特点。