NOVEL STEROID PRODUCTS COMPRISING, IN POSITION 23, A CETONIC RADICAL, THE PROCESS FOR PREPARING THEM, THEIR APPLICATION TO THE PREPARATION OF PRODUCTS OF THE 20-CETOPREGNANES SERIES AND THE INTERMEDIATES OF THIS ASSOCIATION

摘要

The subject of the invention is the compounds of formula I: embedded image in which: p p p p p OR p p p p CH OR CHCH / P P THE CORES A, B, C, D POSSIBLY HAVE ONE OR MORE DOUBLE BONDS AND ARE POSSIBLY SUBSTITUTED BY ONE OR MORE FUNCTIONS OR RADICALS. / P P R, IN PARTICULAR HALOGEN, HYDROXYL , ALKOXY, PROCESS FOR PREPARING THEM, THEIR APPLICATION TO THE PREPARATION OF PRODUCTS OF THE SERIES 20-CETO PREGNANE AND THE INTERMEDIATES THEREOF. / P