Novel approach to the synthesis of isotopomeric monoalkyl [16O,17O,18O]phosphates. The stereospecific one-pot conversion of (RP)-thymidine 3′-(4-nitrophenyl)phosphorothioate into (RP)-thymidine 3′-[16O,17O,18O]phosphate
Abstract
Reaction of the (Rp)-diastereoisomer of thymidine 3′-(4-nitrophenyl)phosphorothioate with styrene [18O]oxide in a medium containing [17O]water gives (Rp)-thymidine [16O,17O,18O]phosphate in 70% yield with diastereoisotopomeric purity not lower than 92%.