(3R,4R,5R)-5-[(1R)-1,2-二羟基乙基]-3,4-二羟基四氢呋喃-2-酮

(2ξ)-2,6-Anhydro-5-deoxy-1,3-O-isopropylidene-3,4-di-C-methyl-D-t hreo-hex-5-enitol