The hexadodecapeptide corresponding to the entire amino acid sequence of porcine brain natriuretic peptide (pBNP) was synthesized by assembling four segments in solution, followed by HF deprotection and subsequent oxidation to establish and intramolecular disulfide bridge. The synthesis using the newly developed S-trimethylacetamido-methylcysteine [Cys(Tacm)] derivative gave a better yield than that using the S-2, 4, 6-trimethylbenzylcysteine [Cys(Tmb)] derivative. The chick rectum relaxant activity of the synthetic pBNP was 2.9 times more potent than that of α-rat atrial natriuretic peptide (α-rANP).
通过溶液中四个片段的组装合成出对应于猪脑利
钠肽(p
BNP)整个
氨基酸序列的十六肽,然后进行HF脱保护和随后的氧化以建立分子内二
硫键。使用新开发的S-三甲基乙酰胺甲基半胱
氨酸[Cys(Tacm)]衍
生物进行合成,其产量优于使用S-2,4,6-三甲基苄基半胱
氨酸[Cys(Tmb)]衍
生物的合成。合成的p
BNP对鸡直肠的松弛活性比α-大鼠心房利
钠肽(α-rANP)强2.9倍。