The preparation of 15α-hydroxytestosterone (5) and 15α-hydroxyandrostenedione (11) was carried out employing 17β-tert-butyldimethylsilyloxy-6β-methoxy-3α, 5-cyclo-5α-androstan-15α-ol (1) as a key intermediate. In a similar fashion the 15α-hydroxylated 5α-androstane derivatives (20, 22, 26) were also synthesized. The utilization of tertbutyldimethylsilylation for protecting the hydroxyl group in the preparation of the desired compounds has been demonstrated.