Bioreductions of alkyl-substituted cyclohex-2-enones (substrates 4a, 5a, 6a, and 8a) until prolonged reaction times. Data are reported as molar conversion (%). Blue line and circles: substrates. Red line and squares: OYE products; Green line and diamonds: OYE and CR products. The curves were representative of three independent experiments and the standard deviations were always less than 4%.