(4R,6R)-4-benzyloxycarbonylamino-6-(tert-butoxycarbonylamino)methyl-3,4,5,6-tetrahydro-2H-pyran-2-one
[(2R,4S)-2-(tert-Butoxycarbonylamino-methyl)-6-oxo-tetrahydro-pyran-4-yl]-carbamic acid benzyl ester
Sperabillin C
methyl (3R,5R)-3-benzyloxycarbonylamino-6-<(E,E)-2,4-hexadienoylamino>-5-hydroxyhexanoate
(R)-4-<(Benzyloxycarbonyl)amino>-3-hydroxybutanoic acid