Synthesis of α‐ and γ‐tocopherols selectively labelled with deuterium

Four deuterium-substituted α-tocopherols (dideutero-RRR, nonadeutero-ambo, nonadeutero-all-rac and undecadeutero-all-rac) and a dideutero-RRR-γ-tocopherol have been synthesized for use in studies of the biokinetics, bioavailability and metabolism of vitamin E.