What is the difference between Cholestanol 5alpha and 5beta?

What is the isomeric relation between 5Alpha Cholestanol and 5Beta Cholestanol. I know that those forms appear after Hydrogenation of Cholesterol but unfortunately I cannot find any article or structural molecule of those, I think isomers, in internet, so if anyone can share a structural molecule, show the reaction mechanism or at least tell the isomeric relation I will be very thankful.


N.B: I assume that there is some kind of cis/trans isomerism but don't know exactly where it is. Am I right about that?


