189454-43-1Relevant articles and documents
Synthesis and antitumor activity of new glycosides of epipodophyllotoxin, analogues of etoposide, and NK 611
Daley, Laurent,Guminski, Yves,Demerseman, Pierre,Kruczynski, Anna,Etiévant, Chantal,Imbert, Thierry,Hill, Bridget T.,Monneret, Claude
, p. 4475 - 4485 (2007/10/03)
A series of 3-amino- and 3-alkylamino-2-deoxy-β-D-ribo- and β-D- arabino-glycosides of 4'-demethylepipodophyllotoxin have been synthesized by means of an improved trimethylsilyl-iodide procedure for the podophyllotoxin- 4'-demethylepipodophyllotoxin conversion, an efficient and high yielding synthesis of silyl glycoside donors of 3-azido-2,3-dideoxy-β-D-ribo-and β- D-arabino-hexopyranosides and stereoselective glycosylations. In vitro evaluation of cytotoxic effects against murine L1210 leukemia critically demonstrates the essential role played by a 4,6-acetal for biological activity. Among the most cytotoxic compounds, 3-amino-2,3-dideoxy-and 3-N,N- (dimethylamino)-2,3-dideoxy etoposide analogues, 17 and 27-29 are at least as potent as etoposide on the in vivo P388 (iv/ip) murine leukemia models. However, surprisingly enough, none of these compounds inhibits the human DNA topoisomerases I or II or binds to tubulin to prevent its polymerization and microtubule assembly. Therefore, their mechanism of action remains to be cleared up.