18 results match your criteria: "Center for Research and Development of Fine Chemicals of Guizhou University[Affiliation]"

Background: Bacterial diseases caused by phytopathogenic Xanthomonas pose a significant threat to global agricultural production, causing substantial economic losses. Biofilm formation by these bacteria enhances their resistance to environmental stressors and chemical treatments, complicating disease control. The key to overcoming this challenge lies in the development of multifunctional green bactericides capable of effectively breaking down biofilm barriers, improving foliar deposition properties, and achieving the control of bacterial diseases.

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Smart β-cyclodextrin-dominated helical supramolecular dendritic assemblies improve the foliar affinity and biofilm disruption for treating alarming bacterial diseases.

Carbohydr Polym

January 2025

State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang 550025, China. Electronic address:

Recent outbreaks of alarming bacterial diseases have significantly impacted global agricultural productivity. Conventional bactericides exhibit certain limitations in efficiently impeding biofilm formation and annihilating biofilm-dispersed pathogens, and often expose to high off-target movement during foliar spraying. Here, we produce an innovative helical dendrimer-like supramolecular material (PhA28@β-CD) assembled by a bioactive small-molecule 2-chlorophenylisopropanolamine (PhA28) and β-cyclodextrin (β-CD) through host-guest recognition principle.

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Article Synopsis
  • * Some of these compounds showed strong antiviral activity against the tobacco mosaic virus (TMV), with compound S14 demonstrating better efficacy than the standard antiviral agent ningnanmycin.
  • * S14 was found to enhance chlorophyll content in tobacco leaves, improving their photosynthetic ability and overall disease resistance, as indicated by reduced malondialdehyde (MDA) levels.
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From Proline to Chlorantraniliprole Mimics: Computer-Aided Design, Simple Preparation, and Excellent Insecticidal Profiles.

J Agric Food Chem

October 2024

State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang 550025, China.

Chlorantraniliprole (CHL), a favored agricultural insecticide, is renowned for its high efficiency and broad-spectrum effectiveness against lepidoptera insects. However, the urgency for new insecticide development is underscored by the intricate multistep preparation process and modest overall yields of CHL, along with the escalating challenge of insect resistance. In response, we have crafted CHL mimics from proline employing computer-aided drug design.

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Background: Plant fungal diseases present a major challenge to global agricultural production. Despite extensive efforts to develop fungicides, particularly succinate dehydrogenase inhibitors (SDHIs), their effectiveness is often limited by poor retention of fungicide droplets on hydrophobic leaves. The off-target losses and unintended release cause fungal resistance and severe environmental pollution.

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Synthesis, Anti-TMV Activities, and Action Mechanisms of a Novel Cytidine Peptide Compound.

J Agric Food Chem

September 2024

College of Plant Protection, Shenyang Agricultural University, No. 120 Dongling, Shenyang 110866, Liaoning, China.

Cytidine 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). Among these compounds, the structure of an effective antiviral cytidine peptide SN11 was characterized by H NMR, C NMR, and high-resolution mass spectrometer.

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Antiviral activity evaluation and action mechanism of myricetin derivatives containing thioether quinoline moiety.

Mol Divers

June 2024

National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang, 550025, People's Republic of China.

A variety of myricetin derivatives containing thioether quinoline moiety were designed and synthesized. Their structures of title compounds were determined by H NMR, C NMR, F NMR, and HRMS. Single-crystal X-ray diffraction experiments were carried out with B4.

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Synthesis and biological assessment of indole derivatives containing penta-heterocycles scaffold as novel anticancer agents towards A549 and K562 cells.

J Enzyme Inhib Med Chem

December 2023

State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang, China.

Herein, a new series of 2-chloro--(5-(2-oxoindolin-3-yl)-4-pyrazol-3-yl) acetamide derivatives containing 1,3,4thiadiazole () and 4-1,2,4-triazol-4-amine () moiety was designed, synthesised as novel anticancer agents. The antiproliferative activity values indicated that compound stood as the most potent derivative with IC values of 12.0 nM and 10 nM against A549 and K562 cells, respectively.

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Purification and comparison of soluble and membrane-bound polyphenol oxidase from potato (Solanum tuberosum) tubers.

Protein Expr Purif

February 2023

Center for Research and Development of Fine Chemicals of Guizhou University, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China; Guizhou Biotechnology Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, China. Electronic address:

Enzymatic browning greatly affects the quality of potato products. Polyphenol oxidase (PPO) is the enzyme mainly responsible for potato enzymatic browning. PPO has soluble polyphenol oxidase (sPPO) and membrane-bound polyphenol oxidase (mPPO) forms.

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Allicin-inspired disulfide derivatives containing quinazolin-4(3H)-one as a bacteriostat against Xanthomonas oryzae pv. oryzae.

Pest Manag Sci

February 2023

State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang, China.

Background: Plant bacterial diseases have seriously affected the yield and quality of crops, among which rice bacterial leaf blight (BLB), caused by Xanthomonas oryzae pv. oryzae has seriously affected the yield of rice. As plant-pathogenic bacteria gradually become resistant to existing bactericides, it is necessary to find effective bactericides with novel structures.

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Preparation of a Chlorantraniliprole-Thiamethoxam Ultralow-Volume Spray and Application in the Control of .

ACS Omega

August 2020

State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Huaxi District, Guiyang 550025, People's Republic of China.

Traditional pesticide spraying methods such as knapsack sprayers are inefficient. Ground application equipment is restricted by the terrain and damages the crops. Pesticides cannot be sprayed over a large area in a short time; thus, when there are concentrated outbreaks of pests with strong migration capacity, such as , pests could not be controlled in a small area.

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Jatropha curcas, an economically important biofuel feedstock with oil-rich seeds, has attracted considerable attention among researchers in recent years. Nevertheless, valuable information on the yield component of this plant, particularly regarding ovule development, remains scarce. In this study, transcriptome profiles of anther and ovule development were established to investigate the ovule development mechanism of J.

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The synthesis and antistaphylococcal activity of 9, 13-disubstituted berberine derivatives.

Eur J Med Chem

February 2017

Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, SCME, East China Normal University, Shanghai 200062, China. Electronic address:

A series of novel 9, 13-disubstituted berberine derivatives have been synthesized and evaluated for the antibacterial activities against Staphylococcus aureus, including Newman strain and multidrug-resistant strains (NRS-1, NRS-70, NRS-100, NRS-108, and NRS-271). Compound 20 shows the most potent activity against the growth of Newman strain, with a MIC value of 0.78 μg/mL, which is comparable with the positive control vancomycin.

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Article Synopsis
  • The compound 18β-glycyrrhetinic acid was chemically altered to improve its antibacterial properties by adding a trihydroxylated A ring and an ester group at C-20.
  • Several modified compounds (22, 23, 25, 28, 29, 31, and 32) demonstrated stronger antibacterial effects against Streptomyces scabies compared to the standard antibiotic streptomycin.
  • The most effective modified compound (29) showed superior inhibition against multiple bacteria, including Bacillus subtilis and methicillin-resistant Staphylococcus aureus, by regulating genes related to bacterial structure and virulence, as confirmed by advanced PCR testing.
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Background: Jatropha curcas is thought to be a promising biofuel material, but its yield is restricted by a low ratio of instaminate/staminate flowers (1/10-1/30). Furthermore, valuable information about flower sex differentiation in this plant is scarce. To explore the mechanism of this process in J.

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Pentacyclic triterpene derivatives possessing polyhydroxyl ring A inhibit gram-positive bacteria growth by regulating metabolism and virulence genes expression.

Eur J Med Chem

May 2015

The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China. Electronic address:

The hydroxyl group in ring A of pentacyclic triterpene is essential for antibacterial activity. Pentacyclic triterpenes bearing three hydroxyl groups in ring A were mainly found in plants and displayed significant antibacterial activity. However, no study reported how to obtain this type of compounds by chemical modification.

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Ascorbate and tocopherol are important hydrophilic or lipophilic antioxidants in plants, while their crucial roles in the antioxidant defense system under ultraviolet B radiation were not well understood. The mutants of Arabidopsis thaliana deficient in ascorbate (vtc1 and vtc2) or tocopherol (vte1) were used to analyze their physiological, biochemical and metabolic change in responses to Ultraviolet B radiation. Results showed that loss of either ascorbate or tocopherol caused reduction in phenylpropanoid and flavonol glycosides compounds, as well as reduction in superoxide dismutase activity and total cellular antioxidant capacity.

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A series of Matijing-Su (MTS, N-(N-benzoyl-l-phenylalanyl)-O-acetyl-L-phenylalanol) derivatives were synthesized and evaluated for their anti-hepatitis B virus (HBV) activity in 2.2.15 cells.

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