Trifluoro-methanesulfonic acid (2R,3R,4S,5R,6R)-2-allyloxy-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester

Acetic acid (2S,3R,4R,5S)-3,5-diacetoxy-2-acetoxymethyl-6-bromo-tetrahydro-pyran-4-yl ester