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Dive into the research topics where Tsuyoshi Nakasaka is active.

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Featured researches published by Tsuyoshi Nakasaka.


Journal of The Chemical Society, Chemical Communications | 1980

Synthesis, ring opening, and glycosidic bond cleavage of 3-methyl-2′-deoxyadenosine

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka

Methylation of N′-benzyloxy-1-(2-deoxy-β-D-ribofuranosyl)-5-formamidoimidazole-4-carboxamidine (2a) followed by hydrogenolysis of the N′-benzyloxy-group and cyclization produced the hitherto unknown 3-methyl-2′-deoxyadenosine (5a), which was readily hydrolysed to 3-methyladenine (6) in H2)O at pH ⩽7·0 and to (6) and the imidazole-(2-deoxy)riboside (4a) at pH 8·98.


Chemical & Pharmaceutical Bulletin | 1989

Purines. XXXIV. : 3-Methyladenosine and 3-Methyl-2'-deoxyadenosine : Their Synthesis, Glycosidic Hydrolysis, and Ring Fission

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka


Chemical & Pharmaceutical Bulletin | 1989

Purines. XXXII. Synthesis and ring fission of 3,9-dialkyladenines.

Tozo Fujii; Taisuke Itaya; Tohru Saito; Kazuyo Mohri; Mitsuru Kawanishi; Tsuyoshi Nakasaka


Chemical & Pharmaceutical Bulletin | 1990

Purines. XXXVII. : Synthesis and Reduction of 3,9-Diallkyladenine Salts Deuterated at the 2-Position : Their Use in the Proton Nuclear Magnetic Resonance Study of Isotopically Unmodified Species

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka; Kyoko Kizu


Chemical & Pharmaceutical Bulletin | 1983

Purines. XXIII: Synthesis of N6-alkoxy-1,3-dialkyladeninium salts and an attempt to synthesize 1,3-dimethyladenine

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka


Heterocycles | 1980

Synthesis and Sodium Borohydride Reduction of 3,9-Dimethyladenine Perchlorate Deiterated at the 2-Position

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka; Kyoko Kizu


Chemical & Pharmaceutical Bulletin | 1989

Purines. XXXVI. Fission and reclosure of the adenine ring in 3,9-disubstituted adenines: Effects of substituents.

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka


Heterocycles | 1984

Synthesis of N6-Alkoxy-1,3-dialkyladenium Salts and an Attempt to Synthesize 1,3-Dimethyladenine

Tohru Saito; Tozo Fujii; Tsuyoshi Nakasaka


ChemInform | 1990

Purines. Part 32. Synthesis and Ring Fission of 3,9-Dialkyladenines.

Tozo Fujii; Taisuke Itaya; Tohru Saito; Kazuyo Mohri; M. Kawanishi; Tsuyoshi Nakasaka


ChemInform | 1984

PURINES. XXIII. SYNTHESIS OF N6-ALKOXY-1,3-DIALKYLADENINIUM SALTS AND AN ATTEMPT TO SYNTHESIZE 1,3-DIMETHYLADENINE

Tozo Fujii; Tohru Saito; Tsuyoshi Nakasaka

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