Nucleosides and Nucleotides. 180. Synthesis and Antitumor Activity of Nucleosides That Have a Hydroxylamino Group Instead of a Hydroxyl Group at the 2‘- or 3‘-Position of the Sugar Moiety
The cytotoxicity of 2'-DHAC (19) and 3'-DHAC (45) against L1210 cells in vitro was reversed by the addition of cytidine, while that of 3'-dDHAC (52) was reversed by 2'-deoxycytidine. 2'-DHAC (19) and 3'-dDHAC (52) mainly inhibited DNA synthesis in L1210 cells, while 3'-DHAC (45) inhibited RNA synthesis. We also evaluated the antitumor activities of 2'-DHAC (19) and 3'-DHAC (45) against murine Meth-A fibrosarcoma