(2R,3R,4R)-2,3-dihydroxy-5-trityloxy-4-pentanolide

(3R,4R,5R)-3-((R)-Benzo[1,3]dioxol-5-yl-hydroxy-methyl)-4-hydroxy-5-trityloxymethyl-dihydro-furan-2-one

(2R,3S,4R)-3-hydroxy-2-phenoxythiocarbonyloxy-5-trityloxy-4-pentanolide

(3R,4R,5R)-3-((R)-Benzo[1,3]dioxol-5-yl-methoxymethoxy-methyl)-4-methoxymethoxy-5-trityloxymethyl-dihydro-furan-2-one

5-O-trityl-α-L-arabinose