Comparative Molecular Similarity Indices Analysis (CoMSIA) on the Melanogenesis Inhibitory Activities of Alkyl-3,4-dihydroxy- benzoate and N-alkyl-3,4-dihydroxybenzamide Derivatives.

  • Kim, Sang-Jin (Dept. of Cosmetic Science, Daejeon Health Sciences College) ;
  • Sung, Nack-Do (Division of Applied Biology & Chemistry, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Lee, Sang-Ho (Korea Research Institute of Chemical Technology)
  • Published : 2003.09.01

Abstract

To find a new substance with superior melanogenesis inhibitory activity, the bioactivities of alkyl-3,4-dihydroxy-5-substituted benzoate (A) and N-alkyl-3,4-dihydroxy-5-substituted benzamide (B) derivatives as substrate of tyrosinase were measured in mouse melanoma cells. And the bioactivities analyzed using comparative molecular similarity indices analysis (CoMSIA). From the CoMSIA model, when cross-validation value (q$^2$) is 0.713 at four components, the pearson correlation coefficient ($r^2$) is 0.900. Unknown compounds were predicted, using QSAR analyzed results from the CoMSIA methods. Excellent agreement was obtained between the measured and the predicted bioactivities of unknown compounds. As the results of prediction from CoMSIA, we could conclude that the bioactivities were increased from pl$_{50}$=3.18-4.80 to above 5.17 by creation of 6-methylheptyl, n-pentylphenyl and 2-hydroxypentylphenyl group etc,.,.

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