Zeid, Ibrahim F.; Abdel Rahman, Adel A.-H.; Abdel-Megied, Ahmed E.-S.; El-Etrawy, Abd-Allah SH.
(nucleosides and nucleotides, 1999)
treatment of the sodium salt of compounds 1, 7 or 12 with chloroethyl methyl ether, 2- chloroethyl toluoylate or 2- (2- chloro ethoxy) ethyl acetate afforded the corresponding derviatives 2, 3, 4, 8, 9, 13 and 14 . ammonolysis ...