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Abstract Steroids are highly prevalent structures in small‐molecule therapeutics, with the level of oxidation being key to their biological activity and physicochemical properties. These C(sp 3 )‐rich tetracycles contain many stereocentres, which are important for creating specific vectors and protein binding orientations. Therefore, the ability to hydroxylate steroids with a high degree of regio‐, chemo‐ and stereoselectivity is essential for researchers working in this field. This review will cover three main methods for the hydroxylation of steroidal C(sp 3 )−H bonds: biocatalysis, metal‐catalysed C−H hydroxylation and organic oxidants, such as dioxiranes and oxaziridines.
Abas et al. (Fri,) studied this question.