[Hydrophobic parameters in homologous series of psychopharmaceuticals]

The 1-octanol/water partition coefficients of sets of 1,4-benzodiazepine and phenothiazine derivatives are determined. The values of the hydrophobic parameters obtained by shake-flask procedure are correlated to the corresponding HPLC retention times. The existence of linear correlations between the two experimentally determined parameters clearly show that chromatographic indices model excellently the shake-flask parameters.