The present invention relates to an improved process for the preparation of bosentan. In particular it relates to a process for preparing bosentan substantially free from the dirner impurity of formula (II) and the 6-hydroxy impurity of formula (III). The invention also relates to a pharmaceutical composition comprising bosentan and its use in the treatment of endothelin-receptor mediated disorders.
本发明涉及一种改进的制备
波生坦的方法。具体而言,它涉及一种制备基本不含式(II)的二聚体杂质和式(III)的6-羟基杂质的
波生坦的方法。该发明还涉及包含
波生坦的药物组合物以及其在治疗内皮素受体介导的疾病中的用途。