Tailored Approaches towards the Synthesis of<scp>l</scp>-<i>S</i>-(Trifluoromethyl)cysteine- and<scp>l</scp>-Trifluoromethionine-Containing Peptides
作者:Charlène Gadais、Nathalie Saraiva-Rosa、Evelyne Chelain、Julien Pytkowicz、Thierry Brigaud
DOI:10.1002/ejoc.201601318
日期:2017.1.10
radical trifluoromethylation approach. The benzyl protecting group of these fluorinated amino acids could be conveniently removed by hydrogenolysis, which circumvented troublesome saponification reactions. For the first time, TfmCys was inserted into a peptide sequence by liquid- or solid-phase peptide synthesis. Finally, a late trifluoromethylation strategy with the use of Togni's reagent on disulfide-bridged
在氟化的非经典氨基酸中,l-三氟甲硫氨酸 (TFM) 和 lS-(三氟甲基)半胱氨酸 (TfmCys),甲硫氨酸和半胱氨酸的氟化类似物,由于它们能够局部增加肽的疏水性而受到特别关注。我们在此报告了通过使用廉价且用户友好的自由基三氟甲基化方法合成叔丁氧基羰基/苄基保护的 TFM 和 TfmCys。这些氟化氨基酸的苄基保护基团可以通过氢解方便地去除,从而避免了麻烦的皂化反应。首次通过液相或固相肽合成将 TfmCys 插入肽序列中。最后,使用 Togni' 的晚期三氟甲基化策略