PROBLEM TO BE SOLVED: To provide a biaryl phosphodiesterase-4 (PDE4) inhibitor useful for treatment and prevention of stroke, myocardial infarction, cardiovascular inflammatory diseases and central nervous system disorders.SOLUTION: There is provided a biaryl compound having at least one further ring. The specific embodiment is.【課題】脳卒中、心筋梗塞、心臓血管炎症性疾患及び中枢神経系障害の治療及び予防に有用なビアリールホスホジエステラーゼ-4(PDE4)阻害薬の提供。【解決手段】少なくとも一つの更なる環を含んでいるビアリール化合物。特定の実施態様は【選択図】なし