Acetic acid (3R,3aR,7aR)-2-acetoxy-5-methoxy-5-oxo-octahydro-1-oxa-5λ5-phospha-inden-3-yl ester

Acetic acid (2R,3R,3aR,7aR)-2-(6-amino-purin-9-yl)-5-methoxy-5-oxo-octahydro-1-oxa-5λ5-phospha-inden-3-yl ester

(2R,3R,4R,5R)-4-((2-((2R,3R,4R,5R)-4-acetoxy-3-((benzyloxy)methyl)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)ethoxy)methyl)-2-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-5-(2-methoxyethyl)tetrahydrofuran-3-yl acetate