(3R,4R,5R)-4-hydroxy-3-[(1S)-1-hydroxy-1-(3,4-methylenedioxyphenyl)methyl]-5-trityloxymethyldihydro-2(3H)-furanone

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

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

(2S,3R,4S)-3-hydroxymethyl-4-methoxymethoxy-2-(3,4-methylenedioxyphenyl)tetrahydrofuran

(2R,3R,4S)-2,4-bis(methoxymethoxy)-4-(3,4-methylenedioxyphenyl)-3-pivaloyloxymethylbutanal