(9Z,11E)-Hexadeca-9,11-dienal (1) was identified as a major component of the sex pheromone of the sugarcane borer Diatraea saccharalis. The identification is based on mass spectral examination of the extracts prepared from calling females, derivatization experiments with 4-methyl-3,5-dihydro-1,2,4-triazole-3,5-dione (2), stereospecific synthesis of dienal 1, and gas chromatography (GC) with electroantennographic detection (GC-EAD). In GC analysis, the antennaly active component and synthetic dienal 1 show identical retention times on several GC phases. However, the behavioral activity of synthetic 1 was much weaker than that of natural extracts. This suggests that an additional component(s) might be involved in sexual communication of this species.
(9Z,11E)-十六烯-9,11-二醛(1)被鉴定为甘蔗螟(Diatraea saccharalis)的性信息素的主要成分。这一鉴定是基于对呼唤雌性个体提取物的质谱检查、与4-甲基-3,5-二氢-1,2,4-三唑-3,5-二酮(2)的衍生实验、二烯醛1的立体特异性合成以及气相色谱(GC)与电触角检测(GC-EAD)的实验。在GC分析中,具有触角活性的成分和合成二烯醛1在几种GC相上显示出相同的保留时间。然而,合成1的行为活性要比天然提取物的弱得多。这表明可能还涉及其他成分在这种物种的性传播中。