The present invention relates to a process for the preparation of compounds endowed with phosphodiesterase (PDE4) inhibitory activity having formula (I). The invention also relates to the process for the isolation by crystallization of the compound (I) and to its use for the preparation of pharmaceutical compositions for inhalation in combination with suitable carriers or vehicles. The present invention also relates to solvates and crystal forms of a compound of formula (I). The synthesized product is suitable for use in pharmaceutical applications for instance in the treatment of respiratory diseases.
本发明涉及一种具有式(I)的具有
磷酸二酯酶(PDE4)抑制活性的化合物的制备方法。本发明还涉及通过结晶分离化合物(I)的工艺及其与适当载体或载体结合用于制备吸入用药物组合物的用途。本发明还涉及式(I)化合物的溶解物和晶体形式。本发明合成的产品适用于医药应用,例如治疗呼吸系统疾病。