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,其中基團如說明書所定義,對於製備治療心血管障礙,尤其是心力衰竭和高血壓的藥物非常有用。這些化合物是Na+、K+-ATP酶的酶活性抑制劑。它們對於製備治療由內源性哇巴因的高血壓效應導致的疾病的藥物非常有用,如在常染色體顯性多囊腎病(ADPKD)中的腎功能衰竭進展、先兆子癇性高血壓及蛋白尿以及具有內收蛋白多態性的患者的腎功能衰竭進展。