A novel phosphotyrosine analogue that incorporates a phosphatase
activity-dependent quinone methide generating motif is synthesized
from tyrosine. Following orthoformylation of the phenol moiety of
methyl N-Cbz-tyrosinate, the Fmoc-protected 3-difluoromethyl
analogue of phosphotyrosine is obtained by functional group transformations.
amino acids - fluorine - hydrolyses - phosphates - quinone methides - quinomethanes