De. Rudisill et Jp. Whitten, SYNTHESIS OF (R)-4-OXO-5-PHOSPHONONORVALINE, AN N-METHYL-D-ASPARTIC ACID RECEPTOR-SELECTIVE BETA-KETO PHOSPHONATE, Synthesis, (8), 1994, pp. 851-854
(R)-4-Oxo-5-phosphononorvaline (1), a selective NMDA glutamate site an
tagonist, has been synthesized in four steps (overall yield = 31%) fro
m (R)-aspartic acid, without racemization.