Conformational Analysis of Abscisic Acid Analogs Produced by Cercospora cruenta
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概要
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The conformation of hydroxy-γ-ionylideneacetic acids produced by Cercospora cruenta was examined by ^1H-NMR analysis. ^1H-^1H COSY and NOE data indicated that (2Z,4E,1'R,4'R)-4'-hydroxy-γ-ionylideneacetic acid has a cyclohexane ring of chair form furnishing a hydroxyl group and a 2,4-pentadienoic acid moiety, each with equatorial orientation, while (2Z,4E,1'S,3'S)-3'-hydroxy-γ-ionylideneacetic acid has a flexible twisted-boat form of cyclohexane ring. It is suggested that the structure of another (2Z,4E,1'S,4'R)-isomer of 4'-hydroxy-γ-ionylideneacetic acid with an equatorial hydrogen at the 1'-position is the key for further oxygenation to abscisic acid.
- 社団法人日本農芸化学会の論文
- 1996-05-23
著者
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Yamamoto Hiroshi
Department Of Energy Engineering And Science Nagoya University
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Sugiyama Takeyoshi
Department Of Agricultural Chemistry Faculty Of Agriculture Tohoku University
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Oritani Takayuki
Department Of Agricultural Chemistry Faculty Of Agriculture Tohoku University
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Yamamoto Hiroshi
Departmemt Of Chemical Engineering University Of Tokyo
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