Atheronals

Atheronals are biologically relevant oxysterols formed in the reaction of cholesterol with ozone. Atheronal A is the major product of ozonolysis which is 3β-hydroxy-5-oxo-5,6-secocholestan-6-al. Atheronal B is formed by the intramolecular aldol reaction of Atheronal A, which is 3β-hydroxy-5β-hydroxy-B-norcholestane-6β-carboxaldehyde.