School of Chinese Medicine
Bioactive compounds from Vitex leptobotrys
A new lignan, vitexkarinol (1), as well as a known lignan, neopaulownin (2), a known chalcone, 3-(4-hydroxyphenyl)-1-(2,4,6-trimethoxyphenyl)-2-propen- 1-one (3), two known dehydroflavones, tsugafolin (4) and alpinetin (5), two known dipeptides, aurantiamide and aurantiamide acetate, a known sesquiterpene, vemopolyanthofuran, and five known carotenoid metabolites, vomifoliol, dihydrovomifoliol, dehydrovomifoliol, loliolide, and isololiolide, were isolated from the leaves and twigs of Vitex leptobotrys through bioassay-guided fractionation. The chalcone (3) was found to inhibit HIV-1 replication by 77% at 15.9 μM, and the two dehydroflavones (4 and 5) showed weak anti-HIV activity with IC50 values of 118 and 130 μM, respectively, while being devoid of cytotoxicity at 150 μM. A chlorophyll-enriched fraction of V. leptobotrys, containing pheophorbide a, was found to inhibit the replication of HIV-1 by 80% at a concentration of 10 μg/mL. Compounds 1 and 3 were further selected to be evaluated against 21 viral targets available at NIAID (National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA). © 2014 The American Chemical Society and American Society of Pharmacognosy.
Source Publication Title
Journal of Natural Products
American Chemical Society
Link to Publisher's Edition
Pan, Wenhui, Kanglun Liu, Yifu Guan, Ghee Teng Tan, Nguyen Van Hung, Nguyen Manh Cuong, D. Doel Soejarto, John M. Pezzuto, Harry H. S. Fong, and Hongjie Zhang. "Bioactive compounds from Vitex leptobotrys." Journal of Natural Products 77.3 (2014): 663-667.