Kharat ND, Naharwal S, Panda SS, Bajaj K, Sakhuja R. Iridium-catalyzed diacylmethylation of tyrosine and its peptides with sulfoxonium ylides.
Chem Commun (Camb) 2024;
60:7622-7625. [PMID:
38957144 DOI:
10.1039/d4cc02204a]
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Abstract
Pyridyloxy-directed Ir(III)-catalyzed diacylmethylation of protected tyrosines was achieved with alkyl and (hetero)aryl sulfoxonium ylides, furnishing tyrosine-based unnatural amino acids in good yields. Furthermore, the late stage exemplification of the strategy was successfully accomplished in tyrosine-containing dipeptides, tripeptides and tetrapeptides in moderate yields. This methodology is distinguished by its site-selectivity, tolerance of sensitive functional groups, scalability, and retention of the chiral configuration for tyrosine motifs.
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