Incorporation of unnatural amino acid derivatives into a peptide bond via an oxime ester catalysed by papain or lipase
作者:Shui-Tein Chen、Chin-Far Tsai、Kung-Tsung Wang
DOI:10.1039/cc9960000165
日期:——
In the presence of an oxime in the reaction solution, papain and lipase P (Pseudomonas from Amano) catalysed the stereoselective transesterification of an N-protected amino acid or peptide ester to form an active (oxime) ester which in turn underwent peptide bond formation with several natural and unnatural amino acid derivatives (proline, N-methylglycine, N-methylalanine, α-methylphenylalanine).
在反应溶液中存在肟的情况下,木瓜蛋白酶和脂肪酶 P(天野假单胞菌)催化 N 保护氨基酸或肽酯的立体选择性酯交换反应,形成活性(肟)酯,活性酯又与几种天然和非天然氨基酸衍生物(脯氨酸、N-甲基甘氨酸、N-甲基丙氨酸、α-甲基苯丙氨酸)形成肽键。