Estrane and androstane derivatives, process for producing them and preparations containing these compounds

Abstract From the Canadian patent

Estrane and androstane derivatives of formula I wherein X is bromine, iodine, triphenyltin or trialkyltin of 1 to 6 carbon atoms per alkyl radical, Y represents two hydrogen atoms or methylene, Z represents two hydrogen atoms, oxo or alkylenedioxy of 2 to 6 carbon atoms and V is ethylene, vinylene, 1,3-propylene or cyclopropylene R1 is, hydrogen or a hydrocarbon radical of up to 8 hydrocarbon atoms, optionally interrupted by an oxa group or substituted by an oxo group, R2 is methyl or ethyl R3 and R4 represent, a carbon-carbon bond or R3 is hydrogen and R4 is hydrogen or methyl, .DELTA. symbolizes a 4(5)-double bond if Z signifies two hydrogen atoms or an oxo group; or a 5(6)-double bond or …