Silver tetrafluoroborate (AgBF4) in trifluoroacetic acid (TFA) has been found to cleave the S-trimethylacetamidomethyl (Tacm) group or the S-acetamidomethyl (Acm) group without affecting other functional groups in the peptide chain. Newly isolated porcine brain natriuretic peptide-32 (pBNP-32) was synthesized using AgBF4 and Cys(Tacm) derivatives. The synthetic pBNP-32 had the highest chick rectum relaxant activity among the ANP-BNP families.
研究发现,
三氟乙酸(TFA)中的四
氟硼酸银(
AgBF4)能裂解 S-三甲基乙酰胺基(Tacm)或 S-乙酰胺基(Acm),而不影响肽链中的其他官能团。利用 和 Cys(Tacm) 衍
生物合成了新分离的猪脑利
钠肽-32(p
BNP-32)。合成的 p
BNP-32 在 ANP-
BNP 家族中具有最高的小鸡直肠松弛活性。