A simple synthetic approach to Cbz-Phe-Ψ-(Ch2)-Gly-Pro-OMe and related Peptide Isosteres
摘要:
A new approach to ketomethylene and hydroxymethylene peptide isosteres has been developed which is simple, direct, and highly convergent. A key feature is construction of the central bond of a gamma-keto ester by alkylation of a t-butyl beta-keto ester with an alpha-bromo ester.