Iodine-catalyzed oxidative cyclisation for the synthesis of sarisan analogues containing 1,3,4-oxadiazole as insecticidal agents
作者:Yong Guo、Lailiang Qu、Xiaoguang Wang、Mengxing Huang、Lu Jia、Yanbing Zhang
DOI:10.1039/c6ra22343e
日期:——
In continuation of our research aimed at the discovery and development of natural products-based insecticidal agents, a series of novel sarisan analogues containing 1,3,4-oxadiazole through iodine-catalyzed oxidative cyclisation were prepared as insecticidal agents against the pre-third Mythimna separata Walker at 1 mg mL−1 in vivo. Compound 8r, 8t, 8k and 8q exhibited more promising insecticidal activities
在我们继续致力于发现和开发基于天然产物的杀虫剂的研究的过程中,通过碘催化氧化环化制备了一系列含有1,3,4-恶二唑的新型莎丽珊类似物作为杀虫剂,以对抗第三个Mythimna体内的separata Walker浓度为1 mg mL -1 。与莎丽珊和太生丹宁(市售杀虫剂)相比,化合物8r,8t,8k和8q表现出更有希望的杀虫活性,最终死亡率> 60%。使用碘作为催化剂和K 2 CO 3的有效方法作为合成基础,开发了含1,3,4-恶二唑的sarisan类似物。结果表明,在莎丽珊的C-3位的1,3,4-恶二唑环上引入氟苯基或4-氰基苯基单元可提供更有效的化合物。此外,在sarisan的C-3位的1,3,4-恶二唑环上引入杂芳族片段对于杀虫活性非常关键。