[(3aR,4R,6R,7aR)-4-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-yl]-phosphonic acid diethyl ester

Toluene-4-sulfonic acid (4R,5R)-5-[(R)-(diethoxy-phosphorylmethoxy)-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-methyl]-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester