A5045154039- X-ray Diffraction in Crystallography
- Natural Compounds in Disease Treatment
- Crystallization and Solubility Studies
- Plant Parasitism and Resistance
- Phytochemical compounds biological activities
- Natural product bioactivities and synthesis
- Plant tissue culture and regeneration
- Insect and Pesticide Research
- Plant and animal studies
- Nematode management and characterization studies
- Insect Pest Control Strategies
- Chemical synthesis and alkaloids
- Plant and fungal interactions
- Fungal Plant Pathogen Control
- Solid-state spectroscopy and crystallography
- Crystal Structures and Properties
- Allelopathy and phytotoxic interactions
- Plant Pathogens and Fungal Diseases
- Advanced Semiconductor Detectors and Materials
- Plant-Microbe Interactions and Immunity
- Catalytic C–H Functionalization Methods
- Catalytic Cross-Coupling Reactions
- Traditional and Medicinal Uses of Annonaceae
- Legume Nitrogen Fixing Symbiosis
- Phytochemicals and Antioxidant Activities
Anhui Agricultural University
2025
Hainan University
2019-2025
Nankai University
2018-2025
Hunan University
2024
Northwest A&F University
2011-2019
Hunan University of Science and Engineering
2018
Yong In University
2018
Dalian University of Technology
2006
Shanghai University of Traditional Chinese Medicine
1993
Heinrich Heine University Düsseldorf
1992
Two new triterpenoid saponins, namely camsinsaponins A and B (1, 2), along with two known congeners (3, 4) were isolated from Camellia sinensis flowers. Their structures determined by extensive spectroscopic data. All compounds assessed for antifungal bioactivity against Candida albicans, glabrata, tropicalis. Compounds 1–4 showed excellent inhibitory effects. Notably, in regard to 1 2, their MIC values C. albicans close those of the positive control, fluconazole. Furthermore, elements on...
A convenient and efficient indium-catalyzed approach to synthesize alkenyl iodides has been developed through direct iodoalkylation of alkynes with alcohols aqueous HI under mild conditions. This catalytic protocol offers an attractive for the synthesis a diverse range in good excellent yields.
Plant viral diseases cause great harm to crops in terms of yield and quality. Natural products have been providing an excellent source novel chemistry, inspiring the development synthetic pesticides. The Amaryllidaceae alkaloids crinasiadine (3a), trisphaeridine (4a), bicolorine (5a) were selected as parent structures, a series their derivatives designed, synthesized, investigated for anti-plant virus effects first time. Compounds 13b 18 exhibited comparable inhibitory activities...
Ralstonia solanacearum is an important pathogen causing bacterial wilt in pepper (Capsicum annuum L.). The concurrent infection of R. and root-knot nematodes (Meloidogyne spp.) exacerbates the severity pepper. Utilizing plant endophytic bacteria to control these mixed diseases a viable strategy. Waltheria indica L. (Sterculiaceae) traditional medicine plant. A total 209 were isolated from W. indica, Pseudomonas aeruginosa W-126 showed efficient antagonistic effect against solanacearum. Based...
polysaccharides have a variety of pharmacological effects. The commonly used extraction methods include traditional hot water extraction, alkaline enzymatic hydrolysis method, ultrasonic-assisted etc., but there are problems such as low yield, high temperature, cost, strict conditions, and insufficient environmental protection. In this study, crude polysaccharide from the
A series of N-aryl-pyridine-4-one derivatives were designed and synthesized using maltol antidesmone as lead compounds, then their fungicidal/bactericidal activities possible mechanism action against Colletotrichum musae explored. Most these compounds exhibited significant fungicidal activity in vitro. Especially, compound 23 has more than 90% inhibitory nine plant pathogenic fungi at 50 μg mL–1, which is superior to azoxystrobin. Moreover, an vivo bioassay also demonstrated that...
Abstract BACKGROUND Botanical pesticides play an important role in organic agricultural practices and are widely used integrated pest management (IPM). Uvaria grandiflora was mainly reported as traditional medicines possessed antibacterial, antioxidant, antiprotozoal activities. Therefore, biological activities of U. may suggest that they have the potential to be botanical pesticides. RESULTS The extract exhibited broad‐spectrum inhibitory activity toward phytopathogenic fungi oomycetes,...
The discovery of novel leads and new mechanisms action is vital significance to the development pesticides. To explore lead compounds for botanical insecticides, 77 β-dihydroagarofuran derivatives were designed synthesized. Their structures mainly confirmed by 1H NMR, 13C DEPT-135°, IR, MS, HRMS. insecticidal activity was evaluated against third-instar larvae Mythimna separata Walker, results indicated that, these derivatives, eight exhibited more promising than positive control,...
In order to develop new biorational pesticides, ten 6-substituted ester derivatives of Celangulin-V were designed and synthesized. The structures the confirmed by IR, 1H-NMR, 13C-NMR ESI-MS spectral analysis. Insecticidal activities these compounds tested against third-instar larvae Mythimna separata. Two (1.1, 1.2) showed higher insecticidal than Celangulin-V, with mortality 75.0% 83.3%, respectively. While four (1.3, 1.4, 1.7, 1.8) denoted lower activities, others (1.5, 1.6, 1.9, 1.10)...
Abstract BACKGROUND Lycoris aurea (L' Herit.) Herb (Amaryllidaceae) is a native pesticide in China. The ethanolic extract of aureate bulbs, the total alkaloids L. bulbs and main were systematically investigated as part novel project to study their antiviral, fungicidal (phytopathogenic) insecticidal activities. We also prepared 18 lycorine derivatives evaluated bioactivities. RESULTS Lycorine had excellent larvicidal activity against Plutella xylostella (LC 50 = 10.6 mg L −1 ) was effective...
To identify natural nematicides that can replace chemical nematicides, 2-naphthol with high activity against Meloidogyne incognita was isolated from Actephila merrilliana. The nematicidal of M. 100% at 100 μg/mL an EC50 value 38.00 μg/mL. Moreover, had a significant negative effect on egg incubation. 2-Naphthol effectively inhibited the invasion into crops in both pot experiment and field trial. In addition, structure-activity relationship indicated naphthalene ring its β-site hydroxyl group...
1β, 2β, 4α, 6α, 8β, 9α, 12-hepthydroxyl-β-dihydroagarofuran is the main skeleton of β-dihydroagarofuran sesquiterpenoids, which exhibit excellent insecticidal activity. To study further structure-activity relationship sesquiterpenoids towards finding novel botanical pesticides, two series new structurally modified ether analogues were designed and synthesised, their activities evaluated.Twenty-two derivatives synthesised using as starting material. Bioassay results indicated that most...
In the current work, a series of 1-trifluoromethyl cinnamyl alcohol derivatives were designed and synthesized their antifungal activities evaluated. The bioassay result showed that most compounds exhibited excellent activity in vitro at 10 μg mL–1. Next, photostable easily compound 2 with broad-spectrum was selected as potential candidate to evaluate its antibacterial activities. EC50 values against eight fungal plant pathogens ranged from 3.806 17.981 mL–1; same time, could effectively...
In order to develop new biorational pesticides and clarify the potential structural factors needed for biological activity of celangulin-V analogues, thirty novel nitrogenous derivatives were designed synthesized. The single crystal structure is reported first time provides a more accurate than that previously reported. structures all confirmed by either NMR or ESI-MSn analysis. Insecticidal activities these compounds tested against third-instar larvae Mythimna separata. One derivative (1-6)...
Twelve new triazole derivatives of Phrymarolin were prepared from I and the structures all fully characterized by 1H-NMR, 13C-NMR MS spectral data analyses. Larvicidal activities against 4rd instar larvae Culex pipiens pallens these analogues assayed. Although showed certain larvicidal activity, they lower activity than I. The typical non-natural groups substituents reduced derivatives.
The title compound, [Co(C2H8N2)3]AsS4, was synthesized under solvothermal conditions in ethylenediamine (en) at 413 K. compound consists of octahedral [Co(en)3]3+ cations and tetrahedral AsS43− anions.
The title compound, [Ni(C2H8N2)3]2[Sn2Se6], was synthesized under solvothermal conditions in an ethylenediamine/water solution at 453 K. compound contains discrete centrosymmetric [Sn2Se6]4− anions, which are dimers of two tetrahedral SnSe4 groups sharing a common edge. transition metal cation is six-coordinated by three ethylenediamine molecules octahedral geometry.
Southern root-knot nematodes are among the most pernicious phytoparasites; they responsible for substantial yield losses in agricultural crops worldwide. The limited availability of nematicides prevention and control plant-parasitic necessitates urgent development novel nematicides. Natural products have always been a key source discovery pesticides. Waltherione A, an alkaloid, exhibits potent nematocidal activity. In this study, we designed synthesized series quinoline quinolone derivatives...
Imidacloprid (IMI) stress positively correlates with the potential of coumarins to alleviate abiotic stress. However, little is known about pathways and mechanisms by which coumarin reduces IMI residue regulating plant secondary metabolism plant–microbe interactions. This study examined impact on uptake, translocation, in pepper plants modulating signal molecule levels microbial communities rhizosphere phyllosphere. Analysis 2 h─28 d pesticide dynamics revealed that dramatically reduced...