(2R,3R,4S)-4-methoxymethoxy-2-(3,4-methylenedioxyphenyl)-3-pivaloyloxymethyltetrahydrofuran

(2R,3S,4R,5R)-2-hydroxy-3-methoxymethoxy-5-(3,4-methylenedioxyphenyl)-4-pivaloyloxymethyltetrahydrofuran

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