Methanesulfonic acid (1R,2R)-2-benzyloxy-1-((R)-1,2-dihydroxy-ethyl)-3-[1,3]dithian-2-yl-propyl ester

Methanesulfonic acid (1S,2R)-2-benzyloxy-1-((R)-1,2-dihydroxy-ethyl)-3-[1,3]dithian-2-yl-propyl ester

Methanesulfonic acid (2R,3S,4R,6S)-4-benzyloxy-2-(tert-butyl-dimethyl-silanyloxymethyl)-6-methoxy-tetrahydro-pyran-3-yl ester