In the present study, novel steroidal 17a-substituted 3-cyano-17a-aza-D-homo-3, 5- androstadien-17-ones (12–19) and 17a-substituted 17-oxo-17a-aza-D-homo-3, 5- androstadien-3-oic acids (20–26) were synthesized from dehydroepiandrosterone acetate (6) along with 17-oxo-19-nor-3, 5-androstadien-3-oic acid (30) through a multistep synthesis. Compounds were evaluated for their in vitro 5α-reductase inhibitory activity by ...