“…74 The SP-hydroxy-6oxocholestane (1 17) also rearranged to the cholestan-1,3,5trienone (1 18) with potassium hydrogen sulphate and acetic anhydride in dimethylacetamide. 74 The action of nucleophilic reagents, such as potassium and silver acetate and lithium aluminium hydride, on 6j3-substituted 5/3-methylcholest-9-enes (1 19) gives mainly products of type (120),75 and the complete metal hydride also gives the cyclo-steroid (121) and the secosteroid (1 22).…”