Synthesis of 2- and 6-(Dialkylaminoalkylthio)- and 2,6-Bis(dialkylaminoalkylthio)-7-methylpurines
作者:Alicja Kowalska、Krystian Pluta
DOI:10.3987/com-12-12546
日期:——
An efficient synthesis of 21 new thiopurines being 2-substituted 6-(dialkylaminoalkylthio)-7-methylpurines, 6-substituted 2-(dialkylaminoalkylthio)-7-methylpurines, and 2,6-bis(dialkylaminoalkylthio)-7-methylpurines was reported. 2-Substituted 6-(dialkylaminoalkylthio) and 2,6-bis(dialkylaminoalkylthio) derivatives were obtained via direct S-dialkylaminoalkylation of the appro- priate purinethiones. The different reactivities of the dialkylaminalkylthio groups in positions 2 and 6 towards sodium alkoxides were the key processes in a few step synthesis of 2-(dialkylaminoalkylthio) derivatives from 2,6-bis(dialkylaminoalkylthio) derivatives.
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 Isomeric Analogs of Azathioprine
作者:Alicja Kowalska、Krystian Pluta、Kinga Suwińska
DOI:10.3987/com-09-11742
日期:——
The effective synthesis of isomeric analogs of azathioprine 6-substituted derivatives of 7-methyl-2-(1-methyl-4-nitroimidazol-5-ylthio)purines (2), (4) and (6-8) has been worked Out using different reactivity of the imidazolylthio groups in 7-methyl-2,6-di(1-methyl-4-nitroimidazol-5-ylthio)purine (1) towards selected reagents. X-Ray analysis of compound (1) showed an unusual conformation of the imidazolylthio groups.