title: Preparation of tritium- or deuterium-labeled vitamin D analogs by a convenient general method.
abstract: The three-step conversion of vitamin D analogs to 6-oxo-3,5-cyclovitamin D derivatives followed by reduction with a tritide or deuteride reagent and subsequent cycloreversion gives 6-tritio(deutero)vitamin D derivatives and corresponding 5,6-trans-analogs. The method is general and affords the 6-labeled-vitamin D analogs in approximately 20% overall yield.
mesh_terms: D002762:Cholecalciferol; D003903:Deuterium; D004872:Ergocalciferols; D007553:Isotope Labeling / Q000379:methods; D014316:Tritium; D014807:Vitamin D / Q000031:analogs & derivatives*
chemical_list: D004872:Ergocalciferols; D014316:Tritium; D014807:Vitamin D; D002762:Cholecalciferol; D003903:Deuterium