Stored Products and Household Insects Laboratory ARS-USDA, Department of Entomology, University of Wisconsin-Madison, 53706, Madison, Wisconsin.
J Chem Ecol. 1985 Sep;11(9):1263-74. doi: 10.1007/BF01024114.
A male-produced aggregation pheromone, common to the rice weevil,Sitophilus oryzae, and the maize weevil,S. zeamais, was isolated and identified from hexane extracts of highly absorbent paper disks exposed individually to young virgin male weevils. A combination of preparative column and gas-liquid chromatography of disk extracts yielded purified natural pheromone. When analyzed by nuclear magnetic resonance spectroscopy and gas chromatography-mass spectrometry, the structure of the natural pheromone, "sitophilure," proved to be (R (),S ())-5-hydroxy-4-methyl-3-heptanone, of unknown enantiomeric composition. Synthetic racemic pheromone was highly attractive to males and females of both rice and maize weevils. In addition, both sexes of the granary weevil,S. granarius (L.) were attracted to the racemic preparation.
一种雄性产生的聚集信息素，在水稻象鼻虫（Sitophilus oryzae）和玉米象鼻虫（S. zeamais）中普遍存在，从单独暴露于年轻处女雄性象鼻虫的高吸收性滤纸盘的己烷提取物中分离和鉴定出来。磁盘提取物的制备柱和气相色谱的组合分离出了纯化的天然信息素。当通过核磁共振波谱法和气相色谱-质谱法分析时，天然信息素“sitophilure”的结构被证明为（R（），S（））-5-羟基-4-甲基-3-庚酮，其对映体组成未知。合成外消旋信息素对水稻象鼻虫和玉米象鼻虫的雌雄两性均具有很强的吸引力。此外，谷象（S. granarius（L.））的雌雄两性也被外消旋制剂所吸引。
