Acyclic<i>C</i>-Nucleoside Analogs of the Type of 5-<i>C</i>-Polyhydroxyalkyl-1,3,4-thiadiazoles
作者:Elsayed S. H. El Ashry、Mahmoud A. Nassr、Yeldez El Kilany、Ahmed Mousaad
DOI:10.1246/bcsj.60.3405
日期:1987.9
The synthesis of some acyclic C-nucleosideanalogs possessing thiadiazole rings was achieved by the heterocyclization of the 4-arylthiosemicarbazones of D-galactose, D-glucose, D-mannose, D-arabinose, and lactose, Acetylation of the thiadiazoles afforded the corresponding 2-(N-acetylarylamino)-5-polyacetoxyalkyl-1,3,4-thiadiazoles and periodate oxidation gave the corresponding 5-(arylamino)-1,3,4-
Zelenin, K. N.; Alekseev, E. V.; Kuznetsova, O. B., Russian Journal of Organic Chemistry, 1993, vol. 29, # 2.1, p. 232 - 239
作者:Zelenin, K. N.、Alekseev, E. V.、Kuznetsova, O. B.、Terent'ev, P. B.、Lashin, V. V.、et al.
DOI:——
日期:——
Behavior of free sugar thiosemicarbazones toward heterocyclization reactions
作者:Miriam A. Martins Alho、Norma B. D'Accorso
DOI:10.1016/s0008-6215(00)00127-0
日期:2000.10
The heterocyclization reaction on thiosemicarbazones having the D-galacto, D-gluco and D-manno configuration was studied. We applied two different acetylating conditions, and the reaction products obtained were identified, spectroscopically characterized, and conformationally analyzed. Using experimental data, we discuss a possible mechanistic pathway for heterocyclization and evaluate the influence of several factors, including starting material configuration, pH of reaction medium, and reaction time.