(1R,5R,8R)-8-Hydroxy-2-oxabicyclo[3.3.0]oct-6-en-3-one

(1R,5R,6R,7R,8S)-6,7-Epoxy-8-hydroxy-2-oxabicyclo[3.3.0]octan-3-one

2-Amino-2,5-dideoxy-4a(R)-hydroxy-4a-carba-α-D-arabino-hexofuranose