Pyridazines. VIII. Syntheses and Nuclear Magnetic Resonance Spectra of Cinnoline N-Oxides.
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概要
- 論文の詳細を見る
Cinnoline 1-oxide (II), cinnoline 2-oxide (III), 4-methylcinnoline 1-oxide (V), 4-methylcinnoline 2-oxide (VI), 3-chlorocinnoline 1-oxide (VIII), and 3-methoxycinnoline 1-oxide (XXI) were synthesized. For confirmation of the structure of these compounds, cinnoline 1-oxide (II) and 3-chlorocinnoline 1-oxide (VIII) were prepared from their corresponding 5,6,7,8-tetrahydro derivatives (XI and XIII) by bromination with N-bromosuccimide followed by dehydrobromination with sodium methoxide. The structures of isomeric 4-methylcinnoline N-oxides were determined by the application of ultraviolet and nuclear magnetic resonance spectroscopies. The nuclear magnetic resonance spectra of the cinnoline N-oxides synthesized were examined. The interpretation of the spectra was made in connection with those of pyridazine N-oxides and of quinoline N-oxides. The proton H_8 shows its signal peak at a lower field than do the other protons, owing to the magnetic anisotropy effect of the N-O group.
- 公益社団法人日本薬学会の論文
- 1963-12-25
著者
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尾形 秀
Shionogi Research Laboratory Shionogi & Co. Ltd.
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通 和夫
Shionnogi Research Laboratory Shionogi and Co., Ltd.
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加納 日出夫
Shionogi Research Laboratory, Shionogi & Co., Ltd.
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加納 日出夫
Shionogi Research Laboratory Shionogi & Co. Ltd.
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尾形 秀
Shionogi Research Laboratories Shionogi 〓 Co. Ltd.
-
通 和夫
Shionogi Research Laboratory Shionogi & Co. Ltd.
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