N-Fmoc-5,5,5,5',5',5'-Hexafluoro-L-leucine

N-Fmoc-5,5,5,5'',5'',5''-Hexafluoro-L-leucine is an amino acid derivative used in the synthesis of enantiomerically pure (2S,3S)-5,5,5-trifluoroisoleucine and (2R,3S)-5,5,5-trifluoro-allo-isoleucine.