The first two α-sila-dipeptides, 7 and cyclo-sila-dipeptide 8, were synthesized and characterized by several methods, including X-ray crystallography. Bulky t-BuMe Si substituents provide some kinetic stabilization to the synthesized molecules. 7 and 8 are the first examples of a "Si for C switch" in the central α-position of an amino acid or a peptide, in which silicon is bonded to both the amino and the carbonyl groups.
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| http://dx.doi.org/10.1002/anie.201807027 | DOI Listing |
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