PROBLEM TO BE SOLVED: To provide a phosphodiesterase 4 (PDE4) inhibitor, useful for the treatment of inflammatory respiratory disease such as asthma, chronic obstructive pulmonary disease (COPD), suitable for administration by inhalation route, and having high selectivity to PDE4.SOLUTION: This invention relates to photoactive 1-phenyl-2-pyridinyl alkyl alcohol derivatives represented by formula (1)【課題】喘息および慢性閉塞性肺疾患（ＣＯＰＤ）等の炎症性呼吸器疾患の治療に有効で、吸入による投与に適した、ホスホジエステラーゼ４（ＰＤＥ４）に高い選択性を示すＰＤＥ４阻害剤の提供。【解決手段】式（１）にて例示される光学活性１－フェニル－２－ピリジニルアルキルアルコール誘導体。【選択図】図１
