(2,2-Dimethyl-1,3-dioxolan-4-yl)methyl ((4-oxidodinaphtho[2,1-d:1,2-f][1,3,2]dioxaphosphepin-4-yl)oxy)methyl ether 4-(((2,2-Dimethyl-1,3-dioxolan-4-yl)methoxy)methoxy)dinaphtho[2,1-d:1,2-f][1,3,2]dioxaphosphepine 4-oxide 52:48 Diastereomeric mixture of (R)-(-)- and (S)-(+)-1, 1'-Binaphthyl-2,2'-diyl phosphate-(S)-dioxolane AIDS-141552 AIDS141552 NSC657559