Veber's parameters focus on which aspects to assess oral bioavailability?

Veber's parameters focus on which aspects to assess oral bioavailability?

• A. They Replace Lipinski's Rule Entirely
• B. They Complement Lipinski By Considering Rotatable Bonds And Polar Surface Area
• C. They Focus On The Number Of Rotatable Bonds And Polar Surface Area To Assess Oral Bioavailability
• D. They Assess Metabolic Stability

Answer: (C)

Veber's parameters look at how a molecule's shape and polarity influence its ability to pass through the intestinal lining, which is key for oral bioavailability. The idea is that the more flexible a molecule is (measured by the number of rotatable bonds) and the more polar its surface area (measured by polar surface area), the harder it is for it to permeate membranes via passive diffusion. Veber showed that good oral bioavailability tends to occur when the molecule has ten or fewer rotatable bonds and a polar surface area below about 140 Å^2. These criteria complement Lipinski’s rules by adding a permeability-focused perspective, rather than replacing them or addressing metabolism.

Veber's parameters look at how a molecule's shape and polarity influence its ability to pass through the intestinal lining, which is key for oral bioavailability. The idea is that the more flexible a molecule is (measured by the number of rotatable bonds) and the more polar its surface area (measured by polar surface area), the harder it is for it to permeate membranes via passive diffusion. Veber showed that good oral bioavailability tends to occur when the molecule has ten or fewer rotatable bonds and a polar surface area below about 140 Å^2. These criteria complement Lipinski’s rules by adding a permeability-focused perspective, rather than replacing them or addressing metabolism.