Compounds of the formula: ##STR1## wherein the substituents are as described in the specification, antagonize LTD.sub.4 action and thus, are useful in treating bronchial asthma, pulmonary anaphylaxis, cystic fibrosis, chronic bronchitis, bronchiectasis, respiratory distress syndrome and pulmonary oedema.
该式化合物:##
STR1##其中取代基如规范中所描述,对LTD.sub.4的作用具有拮抗作用,因此可用于治疗支气管哮喘、肺部过敏反应、囊性纤维化、慢性支气管炎、支气管扩张、呼吸窘迫综合征和肺
水肿。