Compounds having the structure of Formula I, including pharmaceutically acceptable salts of the compounds, are CETP inhibitors and are useful for raising HDL-cholesterol, reducing LDL-cholesterol, and for treating or preventing atherosclerosis.COMPUESTOS DERIVADOS DE OXAZOLIDINONA BICÍCLICA FUSIONADAS; INHIBIDORES CETP; COMPOSICIÓN FARMACÉUTICA QUE LOS COMPRENDE; ÚTILES EN EL TRATAMIENTO DE LA ATEROSCEROSIS.