Results 161 to 170 of about 18,183 (205)
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Chromone Derivatives from the Stems of Sichuan Local Sun Cured Tobacco and Their Anti-TMV Activity
Chemistry of Natural Compounds, 2021Two new chromone derivatives (1 and 2), together with four known (3–6) ones, were isolated from the stems of a local sun cured tobacco (Fenghuang tobacco, widely cultivated in Shifang prefecture, Sichuan Province). Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques.
Wei-Shong Kong +13 more
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Seco-pregnane steroidal glycosides from the roots of Cynanchum atratum and their anti-TMV activity
Fitoterapia, 2014Fifteen new seco-pregnane steroidal glycosides cynanosides A-O (1-15) together with twenty-seven known ones were isolated from the roots of Cynanchum atratum. The structures of 1-15 were determined by extensive analysis of spectroscopic data. The anti-tobacco mosaic virus (TMV) activity of these steroidal glycosides was screened by the conventional ...
Ying, Yan +8 more
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C‐Alkylated flavonoids from the whole plants of
AbstractBackgroundNatural products are important sources of biopesticides to control plant virus, and flavonoids are identified as promising anti‐tobacco mosaic virus (TMV) agents. Since Desmodium caudatum is a rich source of flavonoids, this study focuses on the discovery of the new anti‐TMV active flavonoids from D.
Yin‐Ke Li +10 more
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AbstractBACKGROUNDPlant viral diseases are difficult to control and have caused serious damage to the agricultural industry. Recently, botanical biopesticides characterized by environment friendly, safe to non‐target organism and not as susceptible to produce drug resistance, have exhibited great potential to be developed as antiviral agents. To screen
Wenhui, Guo +4 more
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Chemistry of Natural Compounds, 2020
Two new isoquinoline alkaloids, 3-hydroxy-1-(7-hydroxy-6-methylisoquinolin-1-yl)propan-1-one (1) and 3-hydroxy-1-(7-methoxy-6-methylisoquinolin-1-yl)propan-1-one (2) were isolated from the whole plants of Thalictrum glandulosissimum. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies.
Qiu-Fen Hu +9 more
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Two new isoquinoline alkaloids, 3-hydroxy-1-(7-hydroxy-6-methylisoquinolin-1-yl)propan-1-one (1) and 3-hydroxy-1-(7-methoxy-6-methylisoquinolin-1-yl)propan-1-one (2) were isolated from the whole plants of Thalictrum glandulosissimum. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies.
Qiu-Fen Hu +9 more
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Synthesis, Anti-TMV Activities, and Action Mechanisms of a Novel Cytidine Peptide Compound
Journal of Agricultural and Food ChemistryCytidine has a broad range of applications in the pharmaceutical field as an intermediate of antitumor or antiviral agent. Here, a series of new cytidine peptide compounds were synthesized using cytidine and Boc group-protected amino acids and analyzed for their antiviral activities against tobacco mosaic virus (TMV).
Miao Yu +7 more
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Three new xanthones from the stems of Garcinia oligantha and their anti-TMV activity
Phytochemistry Letters, 2013Abstract For more bioactive compounds, phytochemical investigations of the acetone extract of the stems of Garcinia oligantha resulted in the isolation of three new xanthones ( 1 – 3 ) and five known analogues ( 4 – 8 ). Structural elucidations of 1 – 3 were performed by spectral methods such as 1D and 2D (HMQC, HMBC, and ROESY) NMR spectroscopy,
Yu-Ping Wu +6 more
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Bioorganic & Medicinal Chemistry Letters, 2014
Here, a series of β-amino acid ester derivatives containing quinazoline and benzothiazoles was synthesized and evaluated for anti-tobacco mosaic virus (TMV) activity. The compounds 3n, 3o, 3p and 3q showed good antiviral activity against TMV at a concentration of 500 μg/mL, with curative rates of 55.55%, 52.32%, 52.77% and 50.91%, respectively, and ...
Han, Xiao +3 more
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Here, a series of β-amino acid ester derivatives containing quinazoline and benzothiazoles was synthesized and evaluated for anti-tobacco mosaic virus (TMV) activity. The compounds 3n, 3o, 3p and 3q showed good antiviral activity against TMV at a concentration of 500 μg/mL, with curative rates of 55.55%, 52.32%, 52.77% and 50.91%, respectively, and ...
Han, Xiao +3 more
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Three new flavones from the roots and stems of Tiandeng tobacco and their anti-TMV activities
Phytochemistry Letters, 2015Abstract Three new flavone derivatives, paranicflavones A–C (1–3), together with three known similar compounds (4–6), were isolated from their roots and stems of Tiandeng tobacco. Their structures were elucidated by spectroscopic methods, including extensive 1H and 13C NMR techniques.
Wei Zhao +9 more
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Journal of Agricultural and Food Chemistry
Tobacco mosaic virus (TMV) is a major threat to crops, making the discovery of green biopesticides essential. Herein, we present two active ingredients derived from the medicinal plant Dendrobium findlayanum, findlayine A (1) and dendrofindline B (2), as promising precursor compounds for TMV inhibitors.
Cheng-Gang Song +6 more
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Tobacco mosaic virus (TMV) is a major threat to crops, making the discovery of green biopesticides essential. Herein, we present two active ingredients derived from the medicinal plant Dendrobium findlayanum, findlayine A (1) and dendrofindline B (2), as promising precursor compounds for TMV inhibitors.
Cheng-Gang Song +6 more
openaire +2 more sources