Keiko Takenaka

Convenient Synthesis of 2,7-Disubstituted 5<i>H</i>-1,3,4-Thiadiazolo[3,2-<i>a</i>]pyrimidin-5-ones and Related Compounds

Tadakazu Tsuji, Keiko Takenaka · Bulletin of the Chemical Society of Japan · 1982 · 21 citations · Full text

Pharmaceutical Chemistry, Engineering, Phosphorus Pentaoxide +7

Synthesis of [1,3,4]thiadiazolo[3,2‐<i>a</i>]pyrimidines in the presence of formic acid

Keiko Takenaka, Tadakazu Tsuji · Journal of Heterocyclic Chemistry · 1996 · 21 citations

Inorganic Chemistry, Diversity Oriented Synthesis, Bioorganic Chemistry +10

The First Stable Aromatic <i>S</i>-Nitrosothiol: Synthesis, Structure and Reactivity

Maiko Itoh, Keiko Takenaka, Renji Okazaki et al. · Chemistry Letters · 2001 · 18 citations

X-ray Crystallography, Inorganic Chemistry, Chemical Engineering +7

Temperature‐dependent reaction of 1,4,6‐triaminopyrimidine‐2(1<i>H</i>)‐thiones with vilsmeier reagent. formation of [1,2,4]triazolo[1,5‐<i>c</i>]pyrimidin‐5(6<i>H</i>)‐ones

Tadakazu Tsuji, Keiko Takenaka · Journal of Heterocyclic Chemistry · 1990 · 14 citations

Combinatorial Chemistry, Derivative (Chemistry), Derivatives +11

Facile 5'-Halogenation of Unprotected Nucleosides

Tadakazu Tsuji, Keiko Takenaka · Nucleosides Nucleotides & Nucleic Acids · 1987 · 13 citations

Halogenation, Derivative (Chemistry), Nucleic Acid Chemistry +11