Coreopsis lanceolata is an Asteraceous plant known to contain semiochemicals active against nematodes and leukemic agents. The objective of the study was to discover termite resistant constituents from C. lanceolata stems. Five compounds were isolated from C. lanceolata stems. These compounds were identified as 5-phenyl-2-(1-propynyl)-thiophene (1), 1-phenylhepta-1,3,5-tryne (2), β-sitosterol (3), succinic acid (4), and protocatechuic acid (5), respectively; they were confirmed by spectroscopic analysis. Their antitermitic effects were evaluated with the no-choice feeding test against Coptotermes curvignathus. Of the isolates, 5-phenyl-2-(1-propynyl)-thiophene (1) and 1-phenylhepta-1,3,5-tryne (2) showed strong potent antitermitic activity. Our findings suggested that compounds 1 and 2 isolated from C. lanceolata stems appears to be the active ingredients.
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27 January 2018
Chemical Constituents of Coreopsis lanceolata Stems and Their Antitermitic Activity Against the Subterranean Termite Coptotermes curvignathus
Antoni Pardede,
Morina Adfa,
Arif Juliari Kusnanda,
Masayuki Ninomiya,
Mamoru Koketsu
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Journal of Economic Entomology
Vol. 111 • No. 2
April 2018
Vol. 111 • No. 2
April 2018
1-phenylhepta-1,3,5-tryne
5-phenyl-2-(1-propynyl)-thiophene
antitermitic activity