Disclosed herein are derivatives of atrial natriuretic peptides wherein the exocyclic N-terminal peptide segment is deleted and the two cysteinyl residues (at positions 105 and 121) of the natural sequence are replaced with a trivalent unit, --NHCH(CO--)--Q--X--Y--CH.sub.2 CH.sub.2 CO-- wherein Q is methylene, ethylene or CR'R" wherein R' and R" each independently is lower alkyl, X is oxy or thio, and Y is methylene or des-Y. The derivatives may be optionally substituted at various positions including positions 106, 107 and 124. The derivatives possess ANF-like activity and are indicated for treating hypertension and for treating pathological conditions resulting from an imbalance of body fluids and electrolytes.
本文披露了心房利
钠肽的衍
生物,其中外环N-末端肽段被删除,天然序列的两个半胱
氨酸残基(在105和121位置)被替换为三价单元,--NHCH(CO--)--Q--X--Y--CH.sub.2 CH.sub.2 CO--,其中Q是亚甲基,
乙烯或CR'R",其中R'和R"各自独立地是低碳基,X是氧或
硫,Y是亚甲基或去Y。这些衍
生物可以在各种位置包括106、107和124位置进行选择性取代。这些衍
生物具有类似ANF的活性,并适用于治疗高血压和治疗由体液和电解质失衡引起的病理状况。