A5084965933- Crop Yield and Soil Fertility
- Environmental Sustainability and Education
- Agricultural economics and policies
- Agriculture, Plant Science, Crop Management
- Allelopathy and phytotoxic interactions
- Agriculture and Biological Studies
- Thermal and Kinetic Analysis
- Chemistry Education and Research
- Rice Cultivation and Yield Improvement
- Botanical Research and Chemistry
- Sesquiterpenes and Asteraceae Studies
- Biological Activity of Diterpenoids and Biflavonoids
- Agricultural Science and Fertilization
- Wheat and Barley Genetics and Pathology
- Phytochemicals and Antioxidant Activities
- Plant Toxicity and Pharmacological Properties
- Insect Pest Control Strategies
- Metal complexes synthesis and properties
- Asymmetric Synthesis and Catalysis
- Chemical Synthesis and Analysis
- Insect and Pesticide Research
- Synthesis and Catalytic Reactions
- Fungal Plant Pathogen Control
- Analytical Chemistry and Chromatography
- Pesticide Residue Analysis and Safety
Universidade Federal de Viçosa
2023-2024
3,6-Diidropiridin-2(1H)-ona foi isolado do extrato das sementes de Bunchosia glandulifera e D-mannitol da polpa. A elucidação estrutural 3,6-diidropiridin-2(1H)-ona realizada empregando os métodos espectrométricos. Cálculos teóricos dos deslocamentos químicos RMN 1H 13C para três estruturas candidatas foram realizados. Os calculados comparados com valores experimentais o método estatístico DP4. probabilidade DP4 carbono hidrogênio 100% a estrutura candidata R1 (3,6-diidropiridin-2(1H)-ona),...
Abstract BACKGROUND Faced with the need to develop new herbicides modes of action different those observed for existing agrochemicals, one most promising strategies employed by synthetic chemists involves structural modification molecules found in natural products. Molecules containing amides, imides, and epoxides as functional groups are prevalent nature find extensive application synthesizing more intricate compounds due their biological properties. In this context, paper delineates...
The condensation reaction between aminoguanidine bicarbonate and benzoic acid produced 1,2,4-triazole which, after with zinc(II) chloride, led to the formation of a complex, Zn(II)-1,2,4-triazole. This complex decomposes into chloroform leading by-product identified by multinuclear NMR (13C 1H) as benzoate. Subsequently, theoretical study, using Hartree-Fock DFT methods, was applied validate benzoate byproduct decomposition through calculation magnetic shielding tensor (NMR), well address...
Sesquiterpene lactones (SLs) have in their skeleton fifteen carbons and constitute a group of compounds with several biological activities. Because wide spectra activities related ecological role as defense compounds, we selected chromenediones one the most promising candidates for further studies. According to IUPAC nomenclature chromene is polycyclic organic compound formed from fusion benzene ring heterocyclic pyran ring. α- Santonin, commercially available eudesmanolide, was employed...