| Abstract
| - 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.
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