Fig. 16

BOILED-Egg plot depicting the passive gastrointestinal absorption (HIA, white region) and blood-brain barrier (BBB, yellow region) penetration potential of quinazolinone derivatives. Each point represents a molecule plotted by its WLOGP and TPSA values. Blue circles indicate predicted P-gp substrates (PGP+), while red circles indicate non-substrates (PGP−). One compound lies outside the ideal absorption/permeability space, suggesting limited bioavailability.