作者:Martin Völkert、Surrinder Koul、Gernot H. Müller、Manfred Lehnig、Herbert Waldmann
DOI:10.1021/jo0259966
日期:2002.10.1
The enzymatic cleavage of amino acid phenylhydrazides with the enzyme tyrosinase (EC 1.14.18.1) offers a new, mild, and selective method for C-terminal deprotection of peptides. The advantages of the described methodology are the very mild oxidative removal of the protecting group at room temperature and pH 7, a high chemo- and regioselectivity, and the availability of the biocatalyst. Even in oxygen-saturated
用酪氨酸酶(EC 1.14.18.1)酶解氨基酸苯酰肼为肽的C端脱保护提供了一种新的,温和的,选择性的方法。所述方法的优点是在室温和pH 7下非常温和的氧化去除保护基,高的化学和区域选择性以及生物催化剂的可用性。即使在氧气饱和的溶液中,也未观察到敏感蛋氨酸残基的氧化。这些特征使得该方法适合于敏感肽缀合物的合成。机理数据表明,氧化加合物的水解是通过自由基机理进行的。