Compounds of formula (I)wherein:the groups are as defined in the description, are useful for the preparation of medicaments for the treatment of cardiovascular disorders, in particular heart failure and hypertension. The compounds are inhibitors of the enzymatic activity of the Na+,K+-ATPase.式(I)的化合物其中:其基團如說明書所定義,其可用於製備治療心血管病症,特別是心力衰竭和高血壓的藥物。該化合物爲Na+,K+-ATP酶的酶活抑制劑。所述化合物可用於製備由內源性哇巴因的高血壓影響引起的疾病(例如常染色體顯性多囊腎病(ADPKD)中的腎功能衰竭進展,子癇前高血壓以及在患有內收蛋白多態性的患者中的蛋白尿和腎功能衰竭進展)的治療藥物。