Synthesis of a novel class of cdc25A inhibitors from vitamin D3

We have developed a novel class of cdc25A inhibitors by drastic modification of the hydrophobic and hydrophilic substructures of dysidiolide, The unsaturated derivative 3b strongly inhibited cdc25A (IC50 = 7.7 mu M) and caused G1 arrest of HL60 cells. (C) 2000 Elsevier Science Ltd. All rights reserved.