作者:Masaaki Omote、Atsushi Tarui、Masakazu Ueo、Marino Morikawa、Masahiko Tsuta、Sumika Iwasaki、Noriko Morishita、Yukiko Karuo、Kazuyuki Sato、Kentaro Kawai
DOI:10.1055/s-0040-1707238
日期:2020.12
Abstract α,α-Difluoro-β-lactams successfully underwent ring-opening aminolysis with various amino acids in 2,2,2-trifluoroethanol to afford fluorine-containing peptides. In this aminolysis, it was found that 2,2,2-trifluoroethanol first attacked the α,α-difluoro-β-lactams with cleavage of lactam ring to form the corresponding open-chain 2,2,2-trifluoroethyl esters as reactive intermediates. The trifluoroethyl
摘要 α,α-二氟-β-内酰胺成功地在2,2,2-三氟乙醇中进行了各种氨基酸的开环氨解反应,得到了含氟肽。在该氨解中,发现2,2,2-三氟乙醇首先通过裂解内酰胺环攻击α,α-二氟-β-内酰胺形成相应的开链2,2,2-三氟乙基酯作为反应性中间体。与相应的甲酯相比,三氟乙基酯更具亲电性,从而加速了各种氨基酸的氨解反应,形成了具有α,α-二氟亚甲基单元的β-氨基酸肽。