An Unexpected Thermal [1,3]-[1,3]-paraRearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis ofcis-Homopterocarpans
An Unexpected Thermal [1,3]-[1,3]-paraRearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis ofcis-Homopterocarpans
The E,Z-isomers of 3-arylidene substituted flavanone, chromanone and 3-aryl substituted flavone derivatives were tested in vitro for their cytotoxic activity against three cancer cell lines (HL-60, NALM-6, WM-115) and normal cell line (HUVEC). It was observed that substitution at C-3 position led to significant enhance in cytotoxicity. Isomeric configuration of 3-arylideneflavanones had an influence on the cytotoxic potential. Multiple regression analysis combined with variable selection by genetic algorithm was used to model relationships between molecular descriptors and the cytotoxic activity. The most accurate QSAR models were based on a combination between energy of LUMO, experimental value of logP and partial charge on carbonyl oxygen (delta O-2). (C) 2013 Elsevier Ltd. All rights reserved.
MULVAGH D.; MEEGAN M. J.; DONNELLY D., J. CHEM. RES. SYNOP., 1979, NO 4, 137, (M 1713-1731)