Reverse transcriptase-IN-1 is a diarylbenzopyrimidine (DABP) analogue and a potent inhibitor of HIV-1 nonnucleoside reverse transcriptase with an IC50of 13.7 nM.
Reverse transcriptase-IN-1 has antiviral activity with EC50 values of 3.4 nM, 4.3 nM and 3.6 nM for HIV-1 IIIB, E138K and K103N mutants, respectively[1].
The PK study and safety assessment of Reverse transcriptase-IN-1 shows that it is absorbed with mean residence times (MRTs) of 11.8 hours (5 mg/kg, p.o.) and 11.4 hours (1 mg/kg, i.v.) at these two doses. The Cmax of Reverse transcriptase-IN-1 is 39.9 ng/mL at a dose of 5 mg/kg. The oral bioavailability of Reverse transcriptase-IN-1 is significantly improved to 16.5% at a dose of 5 mg/kg in rats. The intrinsic rat microsome clearance of Reverse transcriptase-IN-1 is 33.2 μL/min/mg proteins[1].