Synthesis of Some Carbazolequinone Alkaloids and Their Analogues. Facile Palladium-Assisted Intramolecular Ring Closure of Arylamino-1,4-benzoquinones to Carbazole-1,4-quinones
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概要
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Carbazolequinone alkaloids, murrayaquinone-A (1a), and pyrayaquinone-A (2) and -B (3), as well as pyrano[3,2-b]carbazolequinone 5,an isomer of 2 and 3,were prepared conveniently by the palladium-assisted intramolecular ring closure of the corresponding 2-arylamino-methyl-1,4-benzoquinones 9a and 9i-k. A series of their analogues, 6-, 7-, and 8-substituted 3-methylcarbazole-1,4-quinone derivatives 1b-g and 2-methylcarbazolequinones 6a-g corresponding to 1a-g, was also prepared in the same manner. Comparative analysis of the carbon-13 nuclear magnetic resonance spectra was found to provide useful information for the structural assignment of either 2- or 3-methylcarbazolequinones.
- 公益社団法人日本薬学会の論文
- 1991-02-25
著者
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井藤 千裕
Faculty of Pharmacy, Meijo University
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古川 宏
Faculty Of Pharmacy Meijo University
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余合 基
Faculty Of Pharmacy Meijo University
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井藤 千裕
Faculty Of Pharmacy Maijo University
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