β-1-deoxy-1-(C-2',4',6'-trimethoxyphenyl)-2,3,O-isopropylidene-5-O-(tert-butyldiphenylsilyl)-D-ribofuranose

1,2,3-tri-O-p-nitrobenzoyl-5-O-p-toluyl-β-D-ribofuranose

(1R,4R,5S)-9-[3-(tert-butyldiphenylsilyloxymethyl)-4,5-isopropylidenedioxy-2-cyclopenten-1-yl]-N6,N6-bis(tert-butoxycarbonyl)adenine

2,5-di-O-(p-toluoyl)-3,4-O-isopropylidene-aldehydo-L-ribose

1,4-di-O-(p-toluoyl)-2,3-O-isopropylidene-D-ribitol