Abstract: The screening of several Chinese medicinal herbs for nematocidal properties showed that the ethanol extract of Liriope muscari fibrous roots possessed significant nematocidal activity against the pine wood nematode (Bursaphelenchus xylophilus). From the ethanol extract, a new constituent (1,4-epoxy-cis-eudesm-6-O-β-D-glucopyranoside) and three known glycosides [1β,6α-dihydroxy-cis-eudesm-3-ene-6-O-β-D-glucopyranoside (liriopeoside A), 1β,6β-dihydroxy-cis-eudesm-3-ene-6-O-β-D-glucopyranoside, and 1α,6β-dihydroxy-5,10-bis-epi-eudesm-4(15)-ene-6-O-β D-glucopyranoside] were isolated by bioassay-guided fractionation. The structures were elucidated by 1D and 2D NMR and MS techniques. 1,4-Epoxy-cis-eudesm-6-O-β-D-glucopyranoside possessed moderate nemato-cidal activity against B. xylophilus with a LC50 value of 339.76 μg/mL, while liriopeoside A (LC50 = 82.84 μg/mL) and 1β,6β-dihydroxy-cis-eudesm-3-ene-6-O-β-D-glucopyranoside (LC50 = 153.39 μg/mL) also exhibited nematocidal activity against B. xylophilus. The crude extract of L. muscari fibrous roots exhibited nematocidal activity against the pine wood nematode with a LC50 value of 182.56 μg/mL.
Keywords: Liriope muscari; Nematocidal activity; Bursaphelenchus xylophilus; 1,4-epoxy-cis-eudesm-6-O-β-D-glucopyranoside
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Zhang, H.M.; Wang, G.L.; Bai, C.Q.; Liu, P.; Liu, Z.M.; Liu, Q.Z.; Wang, Y.Y.; Liu, Z.L.; Du, S.S.; Deng, Z.W. A New Eudesmane Sesquiterpene Glucoside from Liriope muscari Fibrous Roots. Molecules 2011, 16, 9017-9024.
Zhang HM, Wang GL, Bai CQ, Liu P, Liu ZM, Liu QZ, Wang YY, Liu ZL, Du SS, Deng ZW. A New Eudesmane Sesquiterpene Glucoside from Liriope muscari Fibrous Roots. Molecules. 2011; 16(11):9017-9024.
Zhang, Hai Ming; Wang, Gang Li; Bai, Chun Qi; Liu, Peng; Liu, Zi Mu; Liu, Qi Zhi; Wang, Yong Yan; Liu, Zhi Long; Du, Shu Shan; Deng, Zhi Wei. 2011. "A New Eudesmane Sesquiterpene Glucoside from Liriope muscari Fibrous Roots." Molecules 16, no. 11: 9017-9024.