Dihydrate of 4-[[9-[(3-cyclopentyloxy-4-methoxy)benzyl]-6,8-dimethylpurin]-2-yl-3-oxypropyl]pyridine N-oxide, drugs containing the same and a compound useful as an intermediate in the production of this dihydrate.
Because of having a phosphodiesterase IV inhibitory effect, this dihydrate is useful as a preventive and/or remedy for asthma, chronic obstructive lung disease and/or other inflammatory diseases.
                            4-[[9-(3-环戊氧基-4-甲氧基)苄基] -6,8-二甲基
嘌呤]-2-基-3-氧丙基
吡啶-N-氧化物的
二水合物,包含该
二水合物的药物以及用于制备该
二水合物的中间体。由于具有
磷酸二酯酶IV抑制作用,该
二水合物可用作哮喘,慢性阻塞性肺疾病和/或其他炎症性疾病的预防和/或治疗药物。