NAD(P)+-NAD(P)H MODELS .85. THE ENZYME/COENZYME/METAL/SUBSTRATE QUATERNARY COMPLEX GENERATED IN THE TRANSITION-STATE OF THE REDUCTION OF BENZOYLFORMATE WITH NAD(P)H MODELS
Enantioselectivities in the reduction of methyl benzoylformate with NAD(P)H model compounds, N-alpha-methylbenzyl-1-propyl-1,4-dihydronicotinamide (PNPH) and N-benzyl-1-propyl-1,4-dihydronicotinamide (PNBH), in the presence of N-protected amino acids have been studied. The stereoselectivity was perturbed by the amino acids which have a side chain capable of coordinating onto Mg2+.