Assignment of the Phosphorus,Proton and Carbon-NMR Spectra of [(Tetrahydro-2-hydroxy-5,5-dimethyl-4H-1,4,2-oxazaphosphorin-4-yl)methyl] phosphonic acid P-Oxide

The ¹H and ¹³C nmr signals of the methylene groups directly linked to the phosphorus atoms, namely P(2)-C(3)H₂ and P(8)-C(7)H₂ in 1a were assigned with the help of hetronuclear decoupling experiments and HETCOR spectrum.