Synthesis and Biological Activity of Oxidation Products of the Antiprogestine Mifepristone
摘要:
Selenium dioxide oxidation allows the selective introduction of a hydroxyl group at position 6 of the steroid skeleton of the antihormone (11 beta, 17 beta)-11-(4-dimethylamino-phenyl)-17-hydroxyl- 17-( 1-propynyl)-estra-4,9-dien-3-one (mifepristone, RU 486) and leads in a one-step procedure to two diastereomeric oxidation products. Their structure (6 alpha- and 6 alpha -hydroxy-mifepristone) was determined by NMR spectroscopy. The antiprogestinic activity of the oxidation products is comparable to that of mifepristone.