Formal Syntheses of N-Trifluoroacetyl-L-acosamine and N-Trifluoroacetyl-L-daunosamine from an Achiral Precursor, Methyl Sorbate

Abstract

N-Trifluoroacetyl-L-acosamine 20 and N-trifluoroacetyl-L-daunosamine 21 were formally synthesized from an achiral precursor, methyl sorbate 4, based on enzymatic chiral induction and diastereoselective 1, 4-conjugated addition of benzylamine to the olefinic moiety of the α, β-unsaturated ester 12.