Abstract
Cyclic depsipeptide FK228 with an intramolecular disulfide bond is a potent inhibitor of histone deacetylases (HDAC). FK228 is stable in blood because of its prodrug function, whose –SS– bond is reduced within the cell. Here, cyclic peptides with –SS– bridges between a variety of amino acids were synthesized and assayed for HDAC inhibition. Cyclic peptide 3, cyclo(-l-amino acid-l-amino acid-l-Val-d-Pro-), with an –SS– bridge between the first and second amino acids, was found to be a potent HDAC inhibitor. Cyclic peptide 7, cyclo(-l-amino acid-d-amino acid-l-Val-d-Pro-), with an –SS– bridge between the first and second amino acids, was also a potent HDAC inhibitor.
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Arai, T., Ashraful Hoque, M., Nishino, N. et al. Cyclic tetrapeptides with –SS– bridging between amino acid side chains for potent histone deacetylases’ inhibition. Amino Acids 45, 835–843 (2013). https://doi.org/10.1007/s00726-013-1527-8
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DOI: https://doi.org/10.1007/s00726-013-1527-8