(-)-(2S,4R,5S)-2-(Iodomethyl)-4-hydroxy-5-methyltetrahydrofuran

三甲胺

2,5-anhydro-3-deoxy-4,6-isopropylidene-L-threo-hex-2-enose

2,5-anhydro-4,6-isopropylidene-3-O-methanesulfonyl-L-idose ethylene acetal