α-amino acidfromL-ascorbicacid is presented. The synthetic procedure is a three-step process involving an S N 2 reaction of an amino acetal with an L-ascorbicacid derivative, followed by protection of the amine as a Fmoc urethane, and acid-promoted trans-acetalization to give the title compound. Inversion of the configuration at the stereocenter of the precursor derived fromL-ascorbicacid allowed
Preparation and Application of an Inexpensive α-Formylglycine Building Block Compatible with Fmoc Solid-Phase Peptide Synthesis
作者:Nicholas D. J. Yates、Matthew E. Warnes、Reuben Breetveld、Christopher D. Spicer、Nathalie Signoret、Martin Fascione
DOI:10.1021/acs.orglett.2c04059
日期:2023.3.31
The installation of fGly motifs into peptides is currently challenging due to degradation under the acidic and nucleophile-rich conditions accompanying resin cleavage during solid-phasepeptidesynthesis. We report the synthesis of acid- and nucleophile-tolerant α-formylglycine buildingblocks from vitamin C and use them to prepare callyaerin A, a macrocyclic peptide containing an fGly-derived motif.