4-amino-6-(thiophen-2-yl)-7-(β-L-xylofuranosyl)pyrrolo[2,3-d] pyrimidine-5-carboxamide

4-amino-6-(furan-2-yl)-7-(β-L-xylofuranosyl)pyrrolo-[2,3-d]pyrimidine-5-carboxamide

9-(2,3,5-tri-O-benzoyl-β-L-ribofuranosyl)-N-palmitoylguanosine