作者:Karina Lucas Silva、José Roberto Trigo
DOI:10.1023/a:1015214422971
日期:——
difference in antipredator activity between N-oxides and free bases from macrocyclic diesters and monoesters may be correlated with physicochemical properties of these molecules in interaction with the Nephila receptors. For the active structures, there was a significant correlation between dosage and antipredator activity. Both forms of retronecine and a necic acid mixture were inactive, supporting the hypothesis
众所周知,吡咯嗪核生物碱(PAs)可以保护弧菌科飞蛾以及Danainae和Ithomiinae蝴蝶免受织球蜘蛛Nephila clavipes(Araneae,Araneidae,Tetragnathinae)的侵害,这些蜘蛛将这些昆虫的成年人从其网中解放出来。我们针对这种蜘蛛测试了八种PA和一种衍生结构的作用[12元大环二酯游离碱整数甜菜碱和半胱氨酸与各自的N-氧化物的89:11混合物;来自该混合物的两种水解产物(烟碱碱反烟碱,其各自的N-氧化物,以及整数riminic和senecionic necic酸的混合物);12元大环senkirkine;9-O-单酯游离碱千里基视黄醛醇及其各自的N-氧化物;和9-O-单酯游离碱Callimorphine(仅由逆转录神经素的昆虫生物合成的PA)]。混合的整数甜氨酸-芥子油苷N-氧化物似乎比各自的游离碱更具活性[LibD50(解放剂量50)分别为0