Table 4. Pharmacokinetic Data of 13 in Rats and Dogs.
iv |
po |
in vitro | |||||||
---|---|---|---|---|---|---|---|---|---|
species | CL [CLunbound]c (L/h/kg) | %Qd | t1/2e (h) | Vssf (L/kg) | AUC0-inf [AUCunbound]g (μM·h) | Cmaxh (μM) | tmaxi (h) | Fj (%) | fuk |
rata | 3.19 [31.6] | 97 | 0.653 | 2.22 | 7.06 [0.713] | 5.88 [0.593] | 0.50 | 44.6 | 0.098 |
dogb | 1.41 [14.5] | 76 | 1.84 | 1.60 | 3.19 [0.309] | 1.24 [0.120] | 1.67 | 46.2 | 0.089 |
Based on an intravenous (iv) dose of 1 mg/kg and a per os (po) dose of 25 mg/kg in male Sprague–Dawley rats. Compound was formulated in 5:60:35 DMA/PEG400/20% SBECD for iv dosing and in 0.5% methyl cellulose (adjusted to pH 3–4) for po dosing.
Based on an intravenous (iv) dose of 1 mg/kg and a per os (po) dose of 5 mg/kg in male beagle dogs. Compound was formulated in 5:25:70 DMA/PEG400/20% SBECD for iv dosing and in 0.5% methyl cellulose for po dosing.
CL = total clearance. CLunbound = CL/free fraction.
Q = percent of liver blood flow, based on 3.3 L/h/kg (rat) and 1.85 L/h/kg (dog).
Plasma half-life.
Vss = volume of distribution at steady state.
Extrapolated total exposure following single dose. Calculated unbound exposure is in parentheses.
Maximum plasma concentration achieved.
Time at which maximum plasma concentration was achieved.
Oral bioavailability.
fu = fraction unbound to plasma protein.