Bredereck et al., Chemische Berichte, 1959, vol. 92, p. 583,594
作者:Bredereck et al.
DOI:——
日期:——
Synthesis of Bis(7-Methyl-2- or 6-Purinyl) Disulfides
作者:Alicja Kowalska
DOI:10.1080/10426500701542734
日期:2007.10.18
Substituted 7-methyl-2- or 6-purinethiones were obtained in series of reactions by nucleophilic substitution with oxygen, chloro, and sulfur nucleophiles. Oxidation of the sulfur atom at position 6 or 2 in purinethiones to corresponding disulfides depended on the conditions of the reaction and oxidizing agent.
Synthesis of the Azathiopurine Analogs
作者:Alicja Kowalska、Krystian Pluta
DOI:10.3987/com-07-11232
日期:——
azathioprine analogs- 2-subsituted derivatives of 7-methyl-6-(l-methyl-4-nitroimidazol-5-ylthio)purines 5 has been achieved by the reaction of 2-subsituted 6-purinethiones 4 with 5-chloro-1-methyl-4-nitroimidazole in ethanol. In the case of 7-methyl-2,6-dithioxanthine 4j, reaction in DMF gave di(imidazolyl) product 51. The key step in this synthesis was preparation of the appropriate 2-substituted 6-purinones