Hs. Chadha et al., PHYSICOCHEMICAL ANALYSIS OF THE FACTORS GOVERNING DISTRIBUTION OF SOLUTES BETWEEN BLOOD AND BRAIN, Bioorganic & medicinal chemistry letters, 4(21), 1994, pp. 2511-2516
An equation is described that relates the equilibrium distribution of
compounds between blood and brain to various solute descriptors, for 5
7 varied compounds. It is shown that the main factors influencing the
distribution are solute size that favours brain, and solute dipolarity
/ polarisability, hydrogen-bond acidity and hydrogen-bond basicity tha
t favour blood. The descriptors can be obtained from measurements on c
ompound substructures, so that the blood-brain distribution can be pre
dicted for drug molecules without the necessity for synthesis.