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

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

(2R,3R,4R,5R)-3,5-bis(methoxymethoxy)-5-(3,4-methylenedioxyphenyl)-4-pivaloyloxymethyl-1-trityloxy-2-pentanol

(2R,3R,4R,5R)-3,5-bis(methoxymethoxy)-5-(3,4-methylenedioxyphenyl)-4-pivaloyloxymethyl-1,2-pentanediol

(2S,3R,4R,5R)-3,5-bis(methoxymethoxy)-5-(3,4-methylenedioxyphenyl)-4-pivaloyloxymethyl-1,2-pentanediol