PROCEDE DE PREPARATION DE NOUVEAUX STEROIEDES COMPORTANT A CYCLE SPIRANNIQUE A 3,4 OR 6 CHAINONS EN POSITION 17

摘要

Products of formula (I): …IMAGE… in which:… R1 = optionally substituted carbocyclic or heterocyclic aryl or aralkyl radical,… R2 = in position alpha or beta = hydrocarbon radical of 1 to 18 carbon atoms,… X = -(CH2)n- with n = 1, 2 or 4 or X = -CH=CH-CH2-CH2-… A, B and C = especially: …IMAGE… process and intermediates for their preparation, their application as medications and pharmaceutical compositions containing them.