The steroidal 5 alpha-alcohol (3) with (diacetoxyiodo)-benzene and iodine under irradiation with visible light undergoes a tandem alkoxy radical beta-fragmentation-cyclopropylcarbinyl rearrangement reaction to give the eleven-membered cyclic ketone (4). Under oxygen pressure peroxidation of the C-radical intermediate rakes place to afford the highly functionalized eleven-membered cyclic ketone (6) in moderate yield.