Tetrahydro-2β-methyl-6-oxo-4β-amino-2H-pyran-3α-carboxylic acid hydrochloride

(trans-(2RS,3SR)-3-[(1SR)-hydroxyethyl]--4-oxoazetidin-2-yl) acetic acid

methyl (2R,3S,4R)-4-amino-2-methyl-6-oxotetrahydro-2H-pyran-3-carboxylate

methyl 3-(N-benzyloxycarbonylamino)-2,3,6-trideoxy-α-D-arabino-hexopyranoside

methyl 3-(benzyloxycarbonyl)amino-2,3,6-trideoxy-α-arabino-hexopyranosid-4-ulose