Stereoselective Syntheses of (E)‐α,β‐Didehydroamino Acid and Peptide Containing Its Residue Utilizing Oxazolidinone Derivative

Reaction of methyl N-Boc-N-phenoxycarbonylglycinate with various aldehydes afforded the corresponding cis-4,5-oxazolidinone derivatives, which were effectively converted to (E)-α,β-didehydroamino a...