Quantitative Relationships Between Inhibition of Photosynthesis and Lipophilicity of Piperidinoethyl Alkoxyphenylcarbamates

Abstract

Piperidinoethyl esters of 2-, 3- and 4-alkoxy substituted phenylcarbamic acids (PAPC) inhibit photosynthetic processes in alga Chlorella vulgaris and spinach chloroplasts. These inhibitory activities of PAPC were correlated with chromatographically determined lipophilicity characteristics log k' (from HPLC) and Kovats indices KIO (from gas chromatography) using parabolic and bilinear model. Both theoretical models are suitable for description of studied correlations, however from the viewpoint of statistical analysis Kubinyi's bilinear model gives better results.