Eighteen new β-dihydroagarofuran derivatives were designed and synthesized using 1β,2β,4α,6α,8β,9α,12-heptahydroxy-β-dihydroagarofuran as starting material, and the structures of all target compounds were confirmed, mainly from 1H NMR and 13C NMR spectral data. Insecticidal activities of these β-dihydroagarofuran derivatives were assayed against sixth-instar larvae of Mythimna separata moths. Results indicated that some of the β-dihydroagarofuran derivatives possessed insecticidal activity.

中文翻译：

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β-二氢琼脂呋喃衍生物的合成及其杀虫活性的初步研究

以1β,2β,4α,6α,8β,9α,12-七羟基-β-二氢琼脂呋喃为起始原料，设计合成了18个新型β-二氢琼脂呋喃衍生物，并通过1H NMR和13C确定了所有目标化合物的结构核磁共振光谱数据。测定了这些 β-二氢琼脂呋喃衍生物对 Mythimna separata 蛾的六龄幼虫的杀虫活性。结果表明，部分β-二氢琼脂呋喃衍生物具有杀虫活性。