Catalysis of the reaction: (22S,24R)-22-hydroxy-5alpha-ergostan-3-one + O2 + reduced  = 3-dehydro-6-deoxoteasterone + H+ + H2O + oxidized . Also converts 3-epi-6-deoxocathasterone to 6-deoxotyphasterol.
(22S)-22-hydroxy-5alpha-campestan-3-one C-23 hydroxylase activity