Protection of 3,4-dihydroxyphenylalanine (DOPA) for Fmoc solid-phase peptide synthesis
作者:Bi-Huang Hu、Phillip B Messersmith
DOI:10.1016/s0040-4039(00)00957-6
日期:2000.7
Cyclic ethyl orthoformate (Ceof) was utilized as a protecting group to protect the catechol hydroxyl groups of 3,4-dihydroxyphenylalanine (DOPA). This protecting group is stable to strong bases and nucleophiles, and can be removed efficiently by 1 M trimethylsilyl bromide in trifluoroacetic acid in the presence of scavengers at 0°C for 60 min. Fmoc-DOPA(Ceof)-OH was synthesized in high yield and applied
环甲酸原甲酸乙酯(Ceof)被用作保护3,4-二羟基苯丙氨酸(DOPA)的邻苯二酚羟基的保护基。该保护基对强碱和亲核试剂稳定,在清除剂的存在下,在0℃下60分钟,可在三氟乙酸中用1 M三甲基甲硅烷基溴将其有效除去。Fmoc-DOPA(Ceof)-OH以高收率合成,并与其他Fmoc-氨基酸一起用于从贻贝粘附蛋白固相合成含DOPA的十肽。