Ames test of 1-(X-phenyl)-3,3-dialkyltriazenes. A quantitative structure-activity study

Area of Science:

• Medicinal Chemistry
• Toxicology
• Computational Chemistry

Background:

• Triazenes are a class of compounds with potential biological activity.
• Understanding the mutagenicity of chemical compounds is crucial for drug development and safety assessment.

Purpose of the Study:

• To establish a quantitative structure-activity relationship (QSAR) for predicting the mutagenicity of 1-(X-phenyl)-3,3-dialkyltriazenes.
• To compare the QSAR for mutagenicity with those for antileukemia activity and toxicity.

Main Methods:

• Ames test using Salmonella typhimurium TA92 to assess mutagenicity.
• Development of a QSAR model based on physicochemical properties (log P, sigma+).
• Comparison of mutagenicity QSAR with existing QSARs for antileukemia action and LD50 toxicity in mice.

Main Results:

• A QSAR equation was formulated: log 1/C = 1.09 log P -1.63 sigma+ + 5.58, with a correlation coefficient of 0.974.
• The model is based on 17 congeners and accurately predicts mutagenicity.
• Mutagenicity data for aflatoxin B and DTIC were also determined.

Conclusions:

• The developed QSAR provides a valuable tool for predicting triazene mutagenicity based on their chemical structure.
• The findings facilitate a comparative analysis of structure-activity relationships across different biological endpoints.