Photoactivated Insecticidal Thiophene Derivatives from Xanthopappus subacaulis

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• 作者：Yongqing Tian ; Xiaoyi Wei ; Hanhong Xu
• 刊名：Journal of Natural Products
• 出版年：2006
• 出版时间：August 2006
• 年：2006
• 卷：69
• 期：8
• 页码：1241 - 1244
• 全文大小：46K
• 年卷期：v.69,no.8(August 2006)
• ISSN：1520-6025

文摘

Three new photoactivated insecticidal thiophene derivatives, xanthopappins A-C (1-3), were isolated from Xanthopappussubacaulis, along with three known thiophene acetylenes, 5-hydroxymethyl-2-(E)-hept-5-ene-1,3-diynylthiophene (4),5-(1,2-dihydroxyethyl)-2-(E)-hept-5-ene-1,3-diynylthiophene (5), and 5-(1,2-diacetoxyethyl)-2-(E)-hept-5-ene-1,3-diynylthiophene (6). The structures of 1-3 were elucidated by spectroscopic methods. Compounds 1-6 exhibited significantphotoactivated insecticidal activity against the fourth-instar larvae of the Asian tiger mosquito.