Discovery of Tetrasubstituted Pyrazines As Semiochemicals in a Sexually Deceptive Orchid
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- 作者：Bj枚rn Bohman ; Lynne Jeffares ; Gavin Flematti ; Lindsay T. Byrne ; Brian W. Skelton ; Ryan D. Phillips ; Kingsley ; W. Dixon ; Rod Peakall ; Russell A. Barrow
- 刊名：Journal of Natural Products
- 出版年：2012
- 出版时间：September 28, 2012
- 年：2012
- 卷：75
- 期：9
- 页码：1589-1594
- 全文大小：279K
- 年卷期：v.75,no.9(September 28, 2012)
- ISSN：1520-6025
文摘
Sexually deceptive orchids employ mimicry of insect sex pheromones to exploit a diverse group of pollinators. The chemical structures of five semiochemicals (1鈥?b>3, 7, 8) produced by populations of the warty hammer orchid, Drakaea livida, pollinated by a thynnine wasp in the genus Catocheilus were elucidated. With the exception of (2,5-dimethylpyrazin-3-yl)methyl 3-methylbutanoate (7), all active compounds were tetrasubstituted pyrazines, including hydroxymethyl (1) and ester (2 and 3) trimethylpyrazine derivatives. Male Catocheilus wasps were responsive to all of these compounds in GC-EAD experiments.