(1S,2R,3R,4R)-4-(2-Hydroxy-ethyl)-cyclopentane-1,2,3-triol

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

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

(1R,5R,6S,7S,8R)-8-(tert-Butyldiphenylsilyloxy)-6,7-dihydroxy-2-oxabicyclo[3.3.0]octan-3-one

(1R,5S,7R,8R)-7-Azido-8-hydroxy-2-oxabicyclo[3.3.0]oct-3-one