1.14.11.26 3-exomethylenecephalosporin + 2-oxoglutarate + O2 - 1.14.11.26 deacetoxycephalosporin C + 2-oxoglutarate + O2 - 1.14.11.26 deacetoxycephalosporin C + 2-oxoglutarate + O2 hydroxylation at C-3' by deacetylcephalosporin C hydroxylase 1.14.11.26 penicillin N + 2-oxoglutarate + O2 -