Table 4

Observed and predicted Ki(apparent) for inhibitors of CYP3A4 fit to different Catalyst pharmacophores

InhibitorReferenceObserved Human Liver MicrosomalKi(apparent)CYP3A44-a Catalyst Prediction Fast Fit Ki(apparent)CYP3A44-a Catalyst Prediction Best Fit Ki(apparent)CYP3A44-bCatalyst Prediction Fast FitKi(apparent)CYP3A44-b Catalyst Prediction Best Fit Ki(apparent)
μM
Quinine Zhang et al. (1997) 11280  (1.8)4-c 12  (0.03)72  (0.8)2.7  (−0.6)
GF-I-4 Fukuda et al. (1997) 0.0295.5  (2.3)0.031  (0.03)3.8  (2.1)0.037  (0.1)
GF-I-1 Fukuda et al. (1997) 0.055.8  (2.1)0.034  (−0.2)8.4  (2.2)0.26  (0.7)
N-Desmethyl diltiazem Sutton et al. (1997) 2930  (2.7)6.3  (0.5)44  (1.3)2.6  (0.1)
N,N-Desmethyl diltiazem Sutton et al. (1997) 0.1930  (4.0)5.8  (−1.8)38  (2.6)2.8  (1.4)
Ritonavir Eagling et al. (1997) 0.0197.8  (2.6)0.036  (0.3)9.4  (2.7)0.059  (0.5)
Saquinavir Eagling et al. (1997) 2.9929  (1.0)1.3  (−0.4)68  (1.4)0.91  (−0.5)
Indinavir Eagling et al. (1997) 0.177  (1.6)0.16  (−0.02)18  (2.2)0.038  (0.6)
  • 4-a Present study.

  • 4-b Pichard et al. (1996, 1990).

  • 4-c Values in parentheses represent residual (log units) of predicted − observed Ki(apparent)values.