p-Azobenzenecarboxamidomethyl esters (OAbc esters) of several α-amino acids have been synthesized and characterized. Their application in peptide chemistry as a colored alkali labile carboxyl protecting group was demonstrated. The esters are compatible with commonly used protecting groups. They are removed with aqueous potassium carbonate in 15-20 min.
已合成和表征了几种α-氨基酸的p-偶氮苯甲酰甲酯(OAbc酯)。它们在肽化学中作为一种有色碱敏感的羧基保护基的应用已经展示。这些酯与常用的保护基兼容。它们可在15-20分钟内用水合碳酸钾去除。