Atom transfer radical addition (ATRA) to alkenes provides a useful tool to create C-C and C-X bonds in a single synthetic step [1-3]. It offers some attractive routes to synthesize the pharmaceutically important molecules. Reductive ATRA represents one of the mildest procedures for a formal alkene carbohydrogenation. We report the application of a mild and convenient reductive ATRA procedure [5], in order to generate a series of methyl ent-kaurenoate 1 fluorinated derivatives 2-6 (Figure). Carbohydrogenation of methyl ent-kaurenoate 1 was performed with several iodo-radical precursors under very mild conditions, in the presence of triethylborane and oxygen (open air) as radical initiators and 4-methoxycatechol as a reducing agent.formulaFigure. Carbohydrogenation of ent-kaurenoate ester. (*tert-butylcatechol (TBC) was used) Hydroalkylation of ent-kaurene derivatives with perfluoroalkyl iodides as radical precursor afforded the fluorinated compounds 2-6 in very good yields (75-87%). These compounds will be tested for biological activity in the following studies towards implementation in medicine or radiology.