The present invention relates to a compound of formula (I)
(wherein all symbols have the same meanings as described hereinbefore). The compound antagonizes cysLT
2
and therefore, it is useful as an agent for the prevention and/or treatment of respiratory diseases such as bronchial asthma, bronchial asthma, chronic obstructive pulmonary disease, pneumonectasia, chronic bronchitis, pneumonia (e.g. interstitial pneumonitis etc.), severe acute respiratory syndrome (SARS), acute respiratory distress syndrome (ARDS), allergic rhinitis, sinusitis (e.g. acute sinusitis, chronic sinusitis, etc.), and the like, or as an expectorant or antitussives.
本发明涉及一种化合物,其
化学式为(I)(其中所有符号的含义与前文描述的相同)。该化合物对cysLT2具有拮抗作用,因此可用作预防和/或治疗呼吸系统疾病,如支气管哮喘、慢性阻塞性肺疾病、肺大疱、慢性支气管炎、肺炎(例如间质性肺炎等)、严重急性呼吸综合症(
SARS)、急性呼吸窘迫综合症(ARDS)、过敏性鼻炎、鼻窦炎(例如急性鼻窦炎、慢性鼻窦炎等)以及作为祛痰剂或止咳剂。