(2R,3R,4R,5R)-2,4-bis(methoxymethoxy)-4-(3,4-methylenedioxyphenyl)-3-pivaloyloxymethylbutanal

(2S,3S,4S)-3-(tert-butyldiphenylsilyloxy)methyl-4-hydroxy-2-(3,4-methylenedioxyphenyl)tetrahydrofuran

(2S,3R,4R)-4-benzyl-3-(tert-butyldiphenylsilyloxy)methyl-4-hydroxy-2-(3,4-methylenedioxyphenyl)tetrahydrofuran