NOVEL 20-ISONITRILES 17 (20) UNSATURATED DERIVATIVES, PROCESS FOR PREPARING THEM AND THEIR USE IN THE PREPARATION OF 17A-HYDROXY 20-CETO STEROIDS

摘要

P COMPOUNDS OF FORMULA I: BR/ (CF DRAWING IN BOPI) BR/ IN WHICH R REPRESENTS A HYDROGEN ATOM, AN ALKYL RADICAL POSSIBLY SUBSTITUTED BY AN OXYGENATED OR NITROGENIC FUNCTION OR A HALOGEN ATOM , OR R REPRESENTS AN ALKENYL OR ALKYNYL RADICAL, R REPRESENTS AN ALKYL RADICAL, ALC REPRESENTS AN ALKYLIC RADICAL, THE CORES A, B, C AND D HAVE ONE OR MORE DOUBLE BINDINGS AND IS POSSIBLY SUBSTITUTED, BY ONE OR MORE HYDROXYL OR HYDROXYL FUNCTIONS KETONE, BY ONE OR MORE ATOMS OF HALOGEN, BY ONE OR MORE ALKYL OR ALKYLOXY RADICALS, OR ONE OR MORE ALKENYL AND ALKYNYL RADICALS. / P P THE COMPOUNDS OF FORMULA I MAY BE USED FOR PRODUCT PREPARATION INDUSTRIAL. / P