synthesized. Chirality was introduced by means of lipase-catalyzed asymmetric acetylation of (±)-2,3-dimethyl-2-cyclopenten-l-ol. X-ray analysis of (−)-camphanate ester of (1S,2S)-(−)-2-(1,2-dimethyl-3-methylenecyclopentyl)ethanol confirmed its (1S,2S)-absolute configuration. The natural pheromone was identified with the (1S,2S)-aldehyde by comparing the specific rotation, enantioselective GC retention
合成了(抗-1,2-二甲基-3-亚甲基环戊基)
乙醛的对映体,其中之一是菠萝粉虱(Dysmicoccus brevipes)的雌性信息素。通过
脂肪酶催化的(±)-2,3-二甲基-
2-环戊烯-1-醇的不对称乙酰化引入手性。对(1 S,2 S)-(-)-2-(1,2-二甲基-3-亚甲基环戊基)
乙醇的(-)-
樟脑酸酯的X射线分析证实了其(1 S,2 S)-绝对构型。通过比较比旋光度,对映选择性GC保留时间和信息素活性,可将天然信息素与(1 S,2 S)-醛鉴别。