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 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
New thiopurines with the propargylthio, pyrrolidinobutynylthio, sulfenamide, and sulfonamide groups in the pyrimidine ring were synthesized. The anticancer activity of these compounds and previously obtained 2- or 6-substituted azathioprine analogs and dialkylaminoalkylthiopurines were tested in vitro against three cell lines: glioblastoma SNB-19, melanoma C-32, and human ductal breast epithelial tumor