A quantitative structure-activity relationship (QSAR) study has been made on two different series of anticancer tyrosine kinase inhibitors, namely a series of 4-alkynyl and 4-alkenyl-quinazolines and a series of N-4,6-pyrimidine-N-alkyl- N'-phenyl ureas. For the first series, QSAR results indicate that the activity is controlled by the hydrophobicity of the molecules and molecular connectivity index of the substituent, whereas for the second series of compounds the activity is found to be controlled by the molecular connectivity index of the substituent and some indicator variables.
A quantitative structure-activity relationship (QSAR) study has been made on a novel series of pyrrole derivatives acting as lymphocyte-specific kinase (Lck) inhibitors. The Lck inhibition activity of compounds is found to be significantly correlated with their molar volume (MV) and surface tension (ST) and the hydrophobic constant of one of their substituents. Both the molar properties MV and ST of the compounds are found to have the negative effect but the hydrophobic property of R(2)-substituen is found to have the positive effect. This leads to suggest that the bulky molecules and the those with high surface tension will not be advantageous to the Lck inhibition, rather their R(2)-substituent with hydrophobic property will be conducive to the activity.
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