3-iodo-7-isopropoxy-5,6-dimethoxy-4H-chromen-4-one 3. An important feature of this synthetic scheme involves selective alkylation, which can be achieved by two different routes. One route involves the selective isopropylation of a triacetate derivative 4 underbasicconditions. The second route employs the selective demethylation of a trimethoxy derivative5under acidic conditions followed by isopropylation. The product
Various analogues of glaziovianin A, an antitumor isoflavone, were synthesized, and their biological activities were evaluated. O-7-modified glaziovianin A showed strong cytotoxicity against HeLa S-3 cells. Compared to glaziovianin A, the O-7-benzyl and O-7-propargyl analogues were more cytotoxic against HeLa S-3 cells and more potent M-phase inhibitors. Furthermore, O-7-modified molecular probes of glaziovianin A were synthesized for biological studies. (C) 2012 Elsevier Ltd. All rights reserved.
Structure–activity relationship study of glaziovianin A against cell cycle progression and spindle formation of HeLa S3 cells
Various derivatives of glaziovianin A, an antitumor isoflavone, were synthesized, and the cytotoxicity of each against HeLa S-3 cells was investigated. Compared to glaziovianin A, the O-7-allyl derivative was found to be more cytotoxic against HeLa S-3 cells and a more potent M-phase inhibitor. (c) 2010 Elsevier Ltd. All rights reserved.