Affiliation:
1. Laboratory of Organic Chemistry ETH Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
Abstract
AbstractFunctional groups that allow for chemoselective and bioorthogonal derivatization are valuable tools for the labelling of peptides and proteins. The isonitrile is such a group but synthetic methods for its incorporation into peptides by solid‐phase peptide synthesis are not known. Here, we introduce (4S)‐ and (4R)‐isonitrileproline (Inp) as building blocks for solid‐phase peptide synthesis. Conformational studies of (4S)‐ and (4R)‐Inp and thermal stability analysis of Inp‐containing collagen triple helices revealed that the isonitrile group exerts a stereoelectronic gauche effect. We showcase the value of Inp for bioorthogonal labelling by derivatization of Inp‐containing collagen model peptides (CMPs). Dual labelling with a pair of bioorthogonal reactions of a CMP containing Inp and azidoproline residues further highlights the versatility of the new isonitrile‐containing amino acids.
Funder
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Subject
General Chemistry,Catalysis,Organic Chemistry
Cited by
1 articles.
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