C07J 41/0055

Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring {not covered by [CPC: C07J41/0005] the 17-beta position being substituted by an uninterrupted chain of at least three carbon atoms which may or may not be branched, e.g. cholane or cholestane derivatives, optionally cyclised, e.g. 17-beta-phenyl or 17-beta-furyl derivatives}