Synthesis of 2, 2-dimethyl-1, 25-dihydroxyvitamin D 3: A-ring structural motif that modulates interactions of vitamin D receptor with transcriptional coactivators
Cholecalciferol, known as vitamin D 3 , is metabolized to afford the hormonally active form, 1α,25-dihydroxyvitamin D 3 (1), through 25-hydroxyvitamin D 3 . In addition to its classical role in calcium and phosphorus homeostasis, 1α,25-dihydroxyvitamin D 3 dominates the cell cycle in many malignant cells, regulating proliferation, differentiation and apoptosis. 1 The broad spectrum of biological activities of 1 is considered to be mediated by a ligand-inducible ...