Affiliation:
1. The United Graduate School of Agricultural Science Gifu University 1-1 Yanagido Gifu 501-1193 Japan
2. Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
3. Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
Abstract
AbstractAdenine diphosphate (ADP)‐ribosylation catalyzed by bacterial toxins is the addition of an ADP‐ribose moiety to specific amino acid residues in target proteins such as arginine, asparagine, glutamine, and histidine through 1,2‐cis(α)‐glycosidic bond formation. ADP‐ribosylation modifies host cell functions, altering normal cellular processes to facilitate their survival, and replication. Despite the development of click chemistry and solid‐phase peptide synthesis‐based approaches, the synthesis of structurally well‐defined naturally occurring N‐linked ADP‐ribosyl molecules remains challenging. Herein, we report a direct and α‐selective N‐ADP‐ribosylation using unprotected β‐ADP‐ribosyl azide and triphenylphosphine esters through traceless Staudinger ligation. The stereoselectivity of this protecting‐group‐free N‐ADP‐ribosylation was validated by enzymatic degradation experiment and high‐performance liquid chromatography, referencing synthetic standards. This method facilitated the facile and rapid synthesis of N‐ADP‐ribosyl acetamide, biotin, fluorescent dye, amino acids, and tripeptide with complete α‐selectivity and moderate yields (37–55 %).
Funder
Ministry of Education, Culture, Sports, Science and Technology
Suntory Foundation for Life Sciences