Figure 75.
Ferric peroxide mechanisms proposed for P450 51A enzymes. (A) Hemiacetal mechanism proposed by Akhtar and associates.274 In that reference, the substrate analog used had a Δ7,8 double bond instead of the Δ8,9 bond in lanosterol 32-aldehyde. (B) Baeyer-Villiger mechanism with acyl intermediate proposed by Fischer et al.273