Table 2

Pharmacokinetic parameters of L-694,458 in orally dosed rats and rhesus monkeys

Dose (mg/kg)FormAUC (μg/hr/ml)Cmax(μg/ml)tmax(hr)t1/2 (hr)
Rats (N = 4)
 10Malate4.16  ± 1.420.74  ± 0.222.3  ± 1.32.2  ± 0.3
 10Free base4.22  ± 0.930.82  ± 0.101.5  ± 0.62.7  ± 0.1
 40Free base38.07  ± 4.873.39  ± 0.252.3  ± 1.34.3  ± 0.1
Rhesus monkeys (N = 1–6)
 10Malate1.60  ± 1.090.21  ± 0.143.0  ± 1.53.9  ± 0.8
 30Free base 8.810.39246.3
 40Malate19.26  ± 6.180.97  ± 0.2519  ± 9n.d.
 40Free base12.880.60246.0
  • n.d. = Not determined. Drug concentrations were still increasing at 24 hr, the last sampling time in this study. AUC extrapolations were performed using the terminal half-life obtained when the animals were dosed with the free base.