Selective Deuteration and Tritiation of Pharmaceutically Relevant Sulfoximines.

Pharmaceutical-aligned research endeavors continue to diversify, including via the installation of new chemical functionality and non-classical bioisosteres within drug design. With this, an equally high demand emerges for the direct installation of isotopic substituents into these scaffolds within drug discovery programmes, as isotopologues are essential for the elucidation of the biological efficacy and metabolic fate of the active pharmaceutical ingredient (API). The sulfoximine functional group has recently become established as a high-value unit in this context; however, general and effective methods for the synthesis of deuterium (H, D) and tritium (H, T) labelled analogues have remained elusive.