The new hypocalcaemically active peptides of formula I ##STR1## and corresponding compounds in which one or more of the asparagine and glutamic acid radicals are replaced by the aspartic acid or glutamic acid radical and/or the aspartic acid radical is replaced by the asparagine radical, their dimers, especially those in which 2 identical peptide sequences (1-32 and 1'-32') are joined in an anti-parallel arrangement via the cysteine radicals 1,7' and 7,1' by means of a disulfide bond, and derivatives are useful as hypocalcaemic agents and are prepared by splitting off groups protecting at least one amino or one carboxyl group or oxidizing the corresponding sulfides to the disulfides or condensing together adequate peptides.
公式I的新低
钙血素活性肽和相应化合物,其中一个或多个
天冬氨酸和谷
氨酸基团被天冬酰基或谷
氨酰基团所取代,和/或天冬酰基被天冬
氨酰基所取代,它们的二聚体,特别是那些通过半胱
氨酸基团1、7'和7、1'通过二
硫键以反平行排列连接2个相同的肽序列(1-32和1'-32')的二聚体,以及它们的衍
生物可用作低
钙血素药物,并通过去除保护至少一个
氨基或一个羧基的基团或氧化相应的
硫化物到二
硫化物或将足够的肽缩合而制备。