A compound of formula (I) wherein a, b, V, W, X, Y, Z, R.sup.1 and R.sup.2 are as defined above. The compound of formula (I) and the pharmaceutically acceptable salts thereof are useful in inhibiting phosphodiesterase (PDE) type IV and the production of tumor necrosis factor (TNF) and in the treatment of asthma, arthritis, bronchitis, chronic obstructive airways disease, psoriasis, allergic rhinitis, dermatitis and other inflammatory diseases characterized by phosphodiesterase (PDE) type IV activity as well as AIDS, sepsis, septic shock and other diseases, such as cachexia, involving the production of TNF. ##STR1##
式(I)的化合物,其中a、b、V、W、X、Y、Z、R.sup.1和R.sup.2如上所定义。公式(I)的化合物及其药用盐在抑制
磷酸二酯酶(PDE)IV型和肿瘤坏死因子(TNF)的产生以及治疗哮喘、关节炎、支气管炎、慢性阻塞性气道疾病、牛皮癣、过敏性鼻炎、皮炎和其他以
磷酸二酯酶(PDE)IV型活性为特征的炎症性疾病以及艾滋病、败血症、脓毒性休克和其他涉及TNF产生的疾病,如虚弱症等方面有用。