D-Ribitol, 5-(6-amino-9H-purin-9-yl)-1,4-anhydro-5-deoxy-

5-(Adenin-9-yl)-5-deoxy-2,3-O-isopropylidene-1,4-anhydro-D-ribitol

1,4-anhydro-2,3-O-isopropylidene-5-O-toluene-p-sulphonyl-D-ribitol