Isolation and identification of oviposition deterrents to cabbage butterfly,Pieris rapae, fromErysimum cheiranthoides
Isolation and identification of oviposition deterrents to cabbage butterfly,Pieris rapae, fromErysimum cheiranthoides
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菜粉蝶产卵抑制物的分离与鉴定
DOI：
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发表时间：
1990
影响因子：
2.3
通讯作者：
C. D. Radke
中科院分区：
文献类型：
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作者：
K. Sachdev;J. Renwick;C. D. Radke
避免一些十字花科物种的十字花科专家，粉蝶，已被归因于产卵的威慑存在于这些植物。对一种这样的不可接受的植物，糖芥（Erysium cheiranthoides）的研究已经导致从叶的醇提取物中分离出正丁醇可溶性的忌避剂。活性组分中含有三个强心苷，这是通过反相HPLC和硅胶上的开放柱色谱分离。化学和光谱证据（UV，[1H]NMR和FAB-MS）导致将这些化合物表征为erysimoside（1），erychroside（2）和erycordin（3）。对菜青虫有较强的忌避作用，但对菜青虫无忌避作用。这两种活性化合物具有相同的糖苷配基，毒毛旋花子苷（5），并且在两种情况下的内部糖是2，6-二脱氧己糖，外部糖在C-4位连接。这些结构特征在无活性化合物（3）中不存在，可能代表产卵忌避活性的特定要求。
Avoidance of some crucifer species by the crucifer specialist,Pieris rapae, has been attributed to the presence of oviposition deterrents in these plants. Studies on one such unacceptable plant,Erysimum cheiranthoides, have resulted in the isolation ofn-butanol-soluble deterrents from the alcoholic extract of foliage. The active fraction contained three cardiac glycosides, which were isolated by reversed-phase HPLC and by open column chromatography on silica gel. Chemical and spectral evidence (UV, [1H]NMR, and FAB-MS) led to the characterization of these compounds as erysimoside (1), erychroside (2), and erycordin (3). Erysimoside and erychroside were strongly deterrent toPieris rapae, but erycordin was inactive. Both active compounds have the same aglycone, strophanthidin (5) and the inner sugar in both cases is a 2,6-dideoxy hexose to which the outer sugar is attached at position C-4. These structural features, which are absent in the inactive compound (3), may represent specific requirements for oviposition deterrent activity.