The below-mentioned structure(Here, as for Y, C (O) OR, C (O) NHR and C (CH) from group which consists of OR and OH it is chosen,) the chemical compound which it possesses or usage of the said chemical compound in order to remedy the salt, and the hypertension which on the medicine manufacture are allowed.下記構造〔ここで、Yは、-C(O)OR2、-C(O)NHR8、-C(CH2)1-2OR3、OHからなる群から選択される〕を有する化合物又はその製薬上許容される塩、及び、高血圧症を治療するための該化合物の使用方法。