Selective nitrolytic deprotection of N -BOC-amines and N -BOC-amino acids derivatives
作者:Paolo Strazzolini、Tiziana Melloni、Angelo G Giumanini
DOI:10.1016/s0040-4020(01)00900-0
日期:2001.10
configuration of the substrates and without affecting copresent Z and ester functions, with a remarkable selectivity towards acid sensitive t-butyl esters. The obtained amino acids esters, isolated and characterized in the form of nitrates salts, proved to be suitable intermediates to be used in peptide synthesis.
使用HNO去保护的方法的延伸3在CH 2氯2到多个适当选择的Ñ -BOC-掩蔽胺和天然氨基酸的衍生物进行了研究。发现该方法对几乎所有测试的底物均有效,但活化的芳族胺和杂环不可避免地会经历更快的氧化。丙氨酸,苯丙氨酸,丝氨酸和赖氨酸衍生物以及二肽Ala–Phe被有效地脱保护,保留了底物的构型且不影响共存的Z和酯功能,对酸敏感的t具有显着的选择性。丁酯。分离出并以硝酸盐的形式表征的所得氨基酸酯被证明是适用于肽合成的中间体。