Table 4

Semi-quantitative prediction of in vivo metabolism of compound A, B, and C by various in vitro systems

MetaboliteIn vivo4-dIn vitro/in vivo4-e
HepatocytesLiver Slices (Fresh)Liver Slice (Cryo)All Organ Slices
Compound A4-a urine
1 82.4 1.2 1.1 1.2 1.2
2 17.6 0.23 0.4 0.3 0.10
Compound B4-b bile +urine
 13.22.62.60.84-f
2 8 0.9 0.7 0.6
3 15 1.2 0.6 0.42
 433.13.63.0
 51.572.02.5
6 19.5 0.8 0.7 0.9
 72.52.10.60
8 47 0.5 1.0 1.2
Compound C4-c bile
 1 87.1 0.06 0.18 0.15 0.75
 20.70000
 4 12.1 4.75 4.17 3.29 1.72

Bold indicates “important” metabolites.

  • 4-a  For the metabolic route see Fig. 1.

  • 4-b  For the metabolic route see Fig. 3.

  • 4-c  For the metabolic route see Fig. 5.

  • 4-d  % of the total amount of metabolites in vivo.

  • 4-e  Ratio of the % of the total amounts of metabolites predicted in vitro and the % of the total amounts of metabolites actually formed in vivo.

  • 4-f  Extra-hepatic metabolism was insignificant.