A Photochemical Reaction of Lupan-3-one
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概要
- 論文の詳細を見る
Lupan-3-one (<B>5</B>) was irradiated in <I>n</I>-hexane under an argon atmosphere using a high pressure mercury lamp. Besides three seco compounds, namely 10α-(2-formylethyl)-5β-isopropenyl-des-A-lupane (<B>6</B>), 10α-(2-carboxyethyl)-5β-isopropyl-des-A-lupane (<B>8</B>), and 10α-(2-carboxyethyl)-5β-isopropenyl-des-A-lupane (<B>9</B>), two seco-nor compounds, 10α-(carboxymethyl)-5β-isopropyl-des-A-lupane (<B>7</B>) and lactone of 10α-(carboxymethyl)-5α-hydroxy-5β-isopropyl-des-A-lupane (<B>10</B>), have been isolated and their structures have been determined. NMR signals of <B>10</B> were examined using Eu(fod)<SUB>3</SUB>-<I>d</I><SUB>27</SUB> as a shift reagent.
- 公益社団法人 日本化学会の論文
著者
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Hirota Hiroshi
Department Of Chemistry Faculty Of Science The University Of Tokyo
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Takahashi Takeyoshi
Department Of Applied Biological Science College Of Agriculture And Veterinary Medicine Nihon Univer
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Tsuyuki Takahiko
Department Of Chemistry College Of General Education University Of Tokyo
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Tanahashi Yoshiaki
Department of Chemistry, Faculty of Science, The University of Tokyo
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