Schisanhenol derivatives and their biological evaluation against tobacco mosaic virus (TMV)
摘要:
Schisanhenol (Sol) was isolated from Schisandra rubriflora, and a series of derivatives (1-16, 15a-16a, and 15b-16b) were designed and prepared by chemical modification. The curative and protective effects of these dibenzocyclooctadiene lignan analogues against tobacco mosaic virus (TMV) were evaluated. Most analogues exhibited stronger protective effects than the positive control ningnanmycin. Dibromoschisanhenol (6) at 0.25 mM exhibited the strongest protective activity (83.5 +/- 1.8% at 0.25 mM), and 14-(3, 5-dibenzyloxy)-benzoyloxyschisanhenol (16) showed a significant curative effect (78.0 +/- 3.8% at 0.15 mM) that was much stronger than that of the commercial virucide ningnanmycin. This study is the first to demonstrate that natural dibenzocyclooctadiene lignans and analogues are active against plant viruses. (C) 2015 Elsevier B.V. All rights reserved.
Syntheses of C18 dibenzocyclooctadiene lignan derivatives as anti-HBsAg and anti-HBeAg agents
作者:Yao-Haur Kuo、Ming-Der Wu、Chia-Cheng Hung、Ray-Ling Huang、Li-Ming Yang Kuo、Ya-Ching Shen、Chi-Wi Ong
DOI:10.1016/j.bmc.2004.12.020
日期:2005.3.1
(+)-Gomisin K(3) (1) and kadsurarin (2) were isolated from Schizandra arisanensis and Kadsura matsudai, respectively, and a series of C(18) dibenzocyclooctadiene lignan analogues (5-20) derived from 1 and 2 were synthesized. Esterified derivatives of 1 and 2 were evaluated for inhibitory activity against human type B hepatitis with surface antigen (HBsAg) and e antigen (HBeAg). Most of the analogues
Synthesis and the hepatoprotective activity of dibenzocyclooctadiene lignan derivatives
作者:Tao He、Qing-Yao Wang、Jing-Zhen Shi、Tian-Yun Fan、Chen Yan、Lie-Jun Huang、Sheng Liu、Xiao-Jiang Hao、Shu-Zhen Mu
DOI:10.1016/j.bmcl.2014.02.020
日期:2014.4
The halogenated and oxidized derivatives (–, ′–′, –, ′–′, –, ′ and ′–′) of schizandrin (), schizandrin B () and schisanhenol () were synthesized. The hepatoprotective effects of these dibenzocyclooctadienelignan analogues against CCl-induced injury were preliminarily evaluated. Most of the analogues exhibited higher protective effects than the positive control biphenyldicarboxylate (DDB). Among these
Structure-Activity Relationships of Lignans from Schisandra chinensis as Platelet Activating Factor Antagonists.
作者:Im Seon LEE、Keun Young JUNG、Sei Ryang OH、Si Hyung PARK、Kyung Seop AHN、Hyeong-Kyu LEE
DOI:10.1248/bpb.22.265
日期:——
structure-activity relationships of lignans from Schisandra chinensis and their derivatives as plateletactivatingfactor (PAF) antagonists. Strong activity was shown in lignans without an ester group at C-6, a hydroxyl group at C-7 or a methylene dioxy moiety and with an R-biphenyl configuration. 6(7)-Dehydroschisandrol A, a derivative of schisandrol A, showed the highest activity (IC50, 2.1x10(-6) M) in this
Two new dibenzocyclooctadiene lignans, benzoylgomisin Q (1) and benzoylgomisin P (2) were isolated from the fruits of Schisandra sphenanthera REHD. et WILS. (Schisandraceae) together with angeloylgomisin P (8), tigloylgomisin P (9), and (+)-gomisin K3 (10) which were the components of Schisandra chinensis BAILL. The structures of 1 and 2 were determined by spectral studies and chemical correlation with schisantherin A (3) and 8, respectively.