Substituent effects on partition coefficients of barbituric acids
作者:Ooi Wong、Robert Henry McKeown
DOI:10.1002/jps.2600771105
日期:1988.11
Precise partitioncoefficients in 1-octanol-water at 25 degrees C were determined for three 2-thiobarbituric acids and 14 barbituricacids with a wider range of substituents. The experimental log P values (log Pexp) of barbituricacids were correlated with the carbon number and the branching effect of the C5 substituent(s) by linear regression analysis. The carbon number term makes a major contribution