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NCI Drug Dictionary


A small molecule and a naphthyridine analogue with antineoplastic activity. Vosaroxin intercalates into DNA in a site-specific manner and blocks the re-ligation process carried out by topoisomerase II during DNA replication. As a result, inhibition of DNA replication, RNA and protein synthesis occurs, followed by cell cycle arrest at G2 phase and induced p53-independent apoptosis. This agent shows a favorable toxicity profile in several aspects: it does not generate reactive oxygen species, as do anthracyclines, reducing the risk of cardiotoxicity; it is not a P-glycoprotein (P-gp) substrate, and thereby evades the common mechanism for multidrug resistance; and it has limited distribution to normal tissues and a more chemically stable molecular structure. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Code name:SNS-595
Chemical structures:(+)-7-[(3S,4S)-3-methoxy-4-(methylamino)pyrrolidin-1-yl]-4-oxo-1-(thiazol-2-yl)-1,4- dihydro-1,8-naphthyridine-3-carboxylic acid
1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-7-[(3S,4S)-3-methoxy-4- (methylamino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazolyl)-