Hypnotic Action of N3-Substituted Arabinofuranosyluracils on Mice.
作者:Toshiyuki KIMURA、Shechun YAO、Kazuhito WATANABE、Shigemi KONDO、Ing Kang HO、Ikuo YAMAMOTO
DOI:10.1248/cpb.49.111
日期:——
respectively, whereas the alkyl (2-6) derivatives did not cause any hypnotic activity. N3-o-Xylylarabinofuranosyluracil (8) displayed the most potent hypnotic activity among the derivatives tested. Certain derivatives (6-11) significantly prolonged the pentobarbital-induced sleeping time compared to control. The present study indicated that substitution with benzyl and/or related groups on the N3-position of
Synthesis and reactions of 2',3'-anhydro-1-β-d-ribofuranosyl-uracil derivatives: molecular structures of 3-methyl-2',3'-anhydrouridine and 3,5-dimethyl-2',3':O6,5'-dianhydrouridine
3'-anhydro-1-β-D-ribofuranosyl-uracil derivatives, which are formed under basic conditions in an equilibrium from the corresponding 2,2'-anhydro isomers could be trapped by 3-N-methylation (3,8). The 3-methyl-5-bromo-2', 3'-epoxide 8 gave on further methylation the 5-methyl-2',3':O6,5'-dianhydro derivative 16, representing a method for converting uracil derivatives into thymidine nucleosides. The 2',3'-epoxides