Results 151 to 160 of about 18,183 (205)

Anti-TMV activity and effects of three prieurianin-type limonoids from Munronia henryi

Pesticide Biochemistry and Physiology, 2022
Three prieurianin-type limonoids (1-3), including two new compounds (1 and 2) and one known compound (3) were isolated from Munronia henryi. These compounds were tested for their activities against tobacco mosaic virus (TMV) by the conventional half-leaf method and the outcomes were analyzed by western blotting and RT-PCR assays.
Ying, Yan, Dan, Wang, Xiong, Zhang, Mingyou, Peng, Xiaoyan, Yan, Yushang, Guo, Mengao, Jia, Jie, Zhou, Lei, Tang, Xiaojiang, Hao   +9 more
openaire   +2 more sources

Total synthesis of the proposed structure of Anti-TMV active tabasesquiterpene A

Tetrahedron, 2021
Abstract The proposed structure of Tabasesquiterpene A, an illudalane type of sesquiterpene has been synthesized in twelve steps from 2-methoxy-4-methylbenzaldehyde in 40% overall yield. Triflic acid mediated intramolecular Freidel-Crafts acylation allows to develop the critical indanone moiety, a key intermediate of this synthesis.
Anusueya Kumari, Muthiah Suresh, Raj Bahadur Singh   +2 more
openaire   +1 more source

Stemtuberolines A-G, new alkaloids from Stemona tuberosa and their anti-TMV activity

Fitoterapia, 2020
Three new tuberostemoamide-type alkaloids, stemtuberolines A-C (1-3), four new stenine-type alkaloids, stemtuberolines D-G (4-7), together with five known Stemona alkaloids (8-12), were isolated from the roots of Stemona tuberosa. Their structures were elucidated on the basis of comprehensive spectroscopic data analysis.
Zhan-Xing, Hu, Qiao, An, Hong-Yu, Tang, Chun-Mao, Yuan, Ya-Nan, Li, Yu, Zhang, Xiao-Jiang, Hao   +6 more
openaire   +2 more sources

Design, synthesis and anti-TMV activities of novel chromone derivatives containing dithioacetal moiety

Bioorganic & Medicinal Chemistry Letters, 2020
Thirty-five novel chromone derivatives containing dithioacetal moiety were designed, synthesized, and their anti-TMV activities were evaluated through half-leaf method. The results showed compound c23 illustrates highly curative, protective and inactivating activities against TMV at 500 mg/L, with the values of 68.8%, 58.8%, 86.0% respectively, which ...
Miao, Li, Ningning, Zan, Maoxi, Huang, Donghao, Jiang, Deyu, Hu, Baoan, Song   +5 more
openaire   +2 more sources

Synthesis and Structure–Activity Relationship Studies of Nicot­lactone Analogues as Anti-TMV Agents

Synthesis, 2022
AbstractThe synthesis of the originally proposed structure of (±)-nicotlactone A, a potent antiviral lignan with three continuous chiral centers, is reported in 5 steps from methyl acrylate. The key steps of the synthesis included an In-catalyzed regioselective allylation and a Mn-catalyzed Mukaiyama hydration reaction.
Gong Xu, Huan Zhou, Hong-Wei He, Yuan Chi, Cai-Yun Chen, Fei-Yu Wang, Jia-Xin Wang, Dan Xu   +7 more
openaire   +1 more source

Preparation and anti‐TMV activity of guanidinylated chitosan hydrochloride

Journal of Applied Polymer Science, 2009
AbstractIn this study, guanidinylated chitosan hydrochloride (GCH) was synthesized and its structure was characterized by UV–vis and FTIR. The degree of substitution of guanidinylated chitosan was confirmed by elemental analysis. In vitro antiviral activity of guanidinium derivative on local infection and systemic infection of tobacco mosaic virus (TMV)
Ying Hu, Jun Cai, Yumin DU, Jianguo Lin, Changgao Wang, Kejuan Xiong   +5 more
openaire   +1 more source

Characterization of diterpenoids from Caesalpinia decapetala and their anti-TMV activities

Fitoterapia, 2016
Caesalpinia decapetala is a versatile medicinal plant belonging to the Fabaceae plant family. In our survey on plant secondary metabolites to obtain bioactive substances for the development of new agricultural anti-TMV agents, the chemical constituents of C. decapetala were investigated.
Jing, Xu, Xiangrong, Cao, Feng, Liu, Jun, Ma, Xingyu, Liu, Ling, Tong, Guochen, Su, Yasushi, Ohizumi, Dongho, Lee, Lizhong, Wang, Yuanqiang, Guo   +10 more
openaire   +2 more sources

Anti-TMV activity flavones from the leaves of Yunnan local air cured tobacco

Fitoterapia, 2015
Four new flavones, tobaflavones E-H (1-4), together with two known flavones (5 and 6), were isolated from the leaves of Dali Tiandeng tobacco (a variety of Yunnan local air cured tobacco). Their structures were elucidated by spectroscopic methods, including extensive 1D- and 2D NMR techniques. Compound 2 is the first naturally occurring flavone bearing
Ming-Ming, Miao, Lan, Li, Qin-Peng, Shen, Chun-Bo, Liu, Yin-Ke, Li, Tao, Zhang, Feng-Mei, Zhang, Pei, He, Kun-Miao, Wang, Rui-Zhi, Zhu, Yong-Kuan, Chen, Guang-Yu, Yang   +11 more
openaire   +2 more sources

Design, synthesis, anti-TMV activity, and preliminary mechanism of cinnamic acid derivatives containing dithioacetal moiety

Pesticide Biochemistry and Physiology, 2020
A series of cinnamic acid derivatives, which contained dithioacetal moiety, were designed and synthesized, and their anti-plant virus activity against Tobacco mosaic virus (TMV) were evaluated. Most target compounds exhibited good anti-plant virus activities.
Yanju, Wang, Fangcheng, He, Sikai, Wu, Yuqin, Luo, Rong, Wu, Deyu, Hu, Baoan, Song   +6 more
openaire   +2 more sources

Synthesis and anti-TMV activity of novel N-(pyrimidin-5-yl)-N′-phenylureas

Chinese Chemical Letters, 2011
Abstract In order to find novel leading structures of pesticide, a series of N-(pyrimidin-5-yl)-N′-phenylureas (4a–4h) were designed and synthesized from 4-chloro-2-diethylamino-6-methyl-5-nitropyrimidine 1 via substitution, reduction and acylation procedures. Preliminary bioassay showed that all the target compounds processing good anti-TMV (tobacco
De Kai Yuan, Da Qiang Zhang, Ru Xing Li, Dao Quan Wang, Xin Ling Yang   +4 more
openaire   +1 more source