A simple and efficient one pot synthesis of 2-amino-4H-chromen-4-yl phosphonate derivatives has been accomplished by the condensation of salicylaldehyde, malononitrile/ethylcyanoacetate and triethyl phosphite/trimethyl phosphite in the presence of molecular iodine as catalyst in water at room temperature. All the reactions were very clean and the products were obtained in very good to excellent yields. The title compounds are characterized by IR, 1H-, 13C-, 31P-NMR and mass spectra, also studied their antimicrobial and antioxidant activity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1248/cpb.c12-00160 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis of α,β-Unsaturated Carbonyl Compounds via Cu/TEMPO/O2 Aerobic Catalytic System.
Chemistry
January 2025
Shihezi University, School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, North 4th Road, 832003, Shihezi, CHINA.
An N,N,N-type Cu(Ⅱ) complex-catalyzed desaturation method for converting alcohols, ketones, lactones, and lactams to their α,β-unsaturated carbonyl compounds is reported. The dehydrogenation reaction can be conducted with a green terminal oxidant O2 without requiring strong acid/base or stoichiometric oxidants. The Cu(Ⅱ) complex/TEMPO/O2 system uses a non-noble catalyst, and a green terminal oxidant as well as demonstrates high activity and functional group tolerance.
View Article and Find Full Text PDFIn vitro Investigation of Antimicrobial and Antioxidant Properties of Green Silver Nanoparticles Synthesized Using Ephedra gerardiana Plant Extract.
Curr Pharm Biotechnol
January 2025
Assistant Professor, Dental Research Center, Department of Oral and Maxillofacial Pathology, School of Dentistry, Birjand University of Medical Sciences, Birjand, Iran.
Background: The increasing prevalence of antibiotic-resistant bacteria necessitates exploring nanotechnology as a potential solution for microbial elimination.
Objectives: This study aimed to investigate the antimicrobial and antioxidant effects of silver nanoparticles synthesized using aqueous extract from the Ephedra gerardiana (E. gerardiana) plant (EG@AgNPs).
Enhancing fermented vegetable flavor with Lactobacillus plantarum and Rhodotorula mucilaginosa.
Food Res Int
January 2025
Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China; International Green Food Processing Research and Development Center of Kunming City, Kunming 650500, China. Electronic address:
The formation of flavor in fermented vegetables is directly associated with the interactions among the resident microbial strains. This study explored the cooperative dynamics between Lactobacillus plantarum and Rhodotorula mucilaginosa in a simulated cabbage juice system. The obtained results indicated that the co-cultivation of these strains accelerated fermentation kinetics and enhanced lactic acid production.
View Article and Find Full Text PDFStructure identification of myricetin-phenylacetaldehyde adducts and their potential biological activities.
Food Res Int
January 2025
School of Food Science and Engineering, Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China; Modern Industrial Technology Research Institute, South China University of Technology, Zhongshan 528437, China. Electronic address:
Our previous research discovered that myricetin could effectively inhibit the formation of heterocyclic aromatic amines (HAAs) in cantonese baked foods by trapping phenylacetaldehyde to form adducts. However, the structure and biological activity of these adducts were still unknown. In this study, we identified two myricetin-phenylacetaldehyde adducts from cantonese mooncakes, BYQ-2 and BYQ-3, using pre-HPLC.
View Article and Find Full Text PDFBiogenic synthesis of titanium nanoparticles by Streptomyces rubrolavendulae for sustainable management of Icerya aegyptiaca (Douglas).
Sci Rep
January 2025
Botany and Microbiology Department, Faculty of Science, Al-Azhar University (Girl Branch), Cairo, Egypt.
Biosynthesized nanoparticles have a variety of applications, and microorganisms are considered one of the most ideal sources for the synthesis of green nanoparticles. Icerya aegyptiaca (Douglas) is a pest that has many generations per year and can affect 123 plant species from 49 families by absorbing sap from bark, forming honeydew, causing sooty mold, and attracting invasive ant species, leading to significant agricultural losses. The purpose of this work was to synthesize titanium dioxide nanoparticles (TiO-NPs) from marine actinobacteria and evaluate their insecticidal effects on Icerya aegyptiaca (Hemiptera: Monophlebidae), in addition to explaining their effects on protein electrophoresis analysis of SDS‒PAGE proteins from control and treated insects after 24, 72 and 120 h of exposure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!