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Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
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May 11, 2023
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Review | Regular issue | Vol 51, No. 9, 1999, pp.2255-2277
Published online, 1st January, 1970■ Systematic Tables of Mono- and Poly-N-methylated Adenines: Acid Dissociation Constants and UV and NMR Spectral Data
Published online, 1st January, 1970
DOI: 10.3987/REV-99-523
■ Systematic Tables of Mono- and Poly-N-methylated Adenines: Acid Dissociation Constants and UV and NMR Spectral Data
Tozo Fujii* and Taisuke Itaya
*Faculty of Pharmaceutical Scicences, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-0934, Japan
Abstract
Available data regarding acid dissociation constants and UV, 1H NMR, and 13C NMR spectra of all the five positional iso-mers (2-6) of NX-methyladenine, 10 known isomers (7-16) of Nx,Ny-dimethyladenine, nine known isomers (17-25) of Nx,Ny,Nz-trimethyladenine, and five known isomers (26-30) of tetra-N-methylated adenine are tabulated for convenience of ready comparison, with 117 reference citations.
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