Intramolecular cycloaddition of α-allyloxycarbonylnitrone bearing a chiral sugar auxiliary: A short-step synthesis of the N-terminal amino acid component of nikkomycin Bz
caused tandem nitrone formation, transesterification, E,Z-isomerization and diastereofacial selective intramolecularcycloaddition to provide stereocontrolled polycyclic compounds in one step. This method could be applied efficiently to synthesis of the N-terminalaminoacidcomponent of nikkomycin Bz.