Structure-activity relationships of 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine analogs: effect of substitutions at the C-6 phenyl ring and at the C-5 position on anti-HIV-1 activity
作者:Hiromichi Tanaka、Hideaki Takashima、Masaru Ubasawa、Kouichi Sekiya、Issei Nitta、Masanori Baba、Shiro Shigeta、Richard T. Walker、Erik De Clercq、Tadashi Miyasaka
DOI:10.1021/jm00080a020
日期:1992.1
pyrimidine moiety of 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine (HEPT) and 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)-2-thiothymine (HEPT-S) on anti-HIV-1 activity was investigated by synthesizing a series of 5-methyl-6-(arylthio) and 5-substituted-6-(phenylthio) derivatives. Preparation of the 5-methyl-6-(arylthio) derivatives was carried out based on either LDA lithiation of 1-[[2-(tert-butyld
RhH(PPh3)4 catalyzesreduction of disulfides to thiols by hydrogen and RhH(PPh3)4/1,4-bis(diphenylphosphino)butane (dppb) catalyzes oxidation of thiols to disulfides by oxygen.
Rhodium-catalyzed sulfur atom exchange reaction between organic polysulfides and sulfur
作者:Mieko Arisawa、Ken Tanaka、Masahiko Yamaguchi
DOI:10.1016/j.tetlet.2005.05.024
日期:2005.7
RhH(PPh3)4 and cis-1,2-bis(diphenylphosphino)ethylene (dppv) catalyze the exchange of sulfur atoms betweensulfur and organic polysulfides. The exchange of dialkyl trisulfides with sulfur proceeds at a high efficiency within 5 min at room temperature yielding a mixture of organic polysulfides.