been prepared and incorporated into angiotensin II by fragment condensation and solid-phase peptide synthesis. Hexafluorovaline derivatives showed general resistance toward various enzymatic digestions and the tendency to racemize extensively upon carboxyl activation. When the angiotensin II analogues were assayed on rat uterus, [Hfv5]AII had 133% activity, [D-Hfv5]AII was inactive, and [Ac-Asn1,DL-Hfv8]AII
已经制备了γ,γ,γ,γ,六
氟缬
氨酸及其衍
生物,并通过片段缩合和固相肽合成将其掺入
血管紧张素II中。六
氟缬
氨酸衍
生物显示出对各种酶消化的一般抵抗力,并且在羧基活化后具有广泛消旋的趋势。当在大鼠子宫上测定
血管紧张素II类似物时,[Hfv5] AII具有133%的活性,[D-Hfv5] AII没有活性,[Ac-Asn1,DL-Hfv8] AII在体外是一种有效的
血管紧张素II抑制剂。体内。