Chemical Constituents of the Flowers of Gynura procumbens
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
Flavonoids from the Whole Herb of Astragalus rigidulus
A new flavonoid derivative, namely astriginoside A (1), was isolated from the whole plant ofAstragalus rigidulus Bunge, together with 19 known ones (2 –20). Their structures were determined by spectroscopic methods, including 1D and 2D NMR, UV, IR, and HR-ESI-MS, and comparison of the spectroscopic data with those reported in the literature. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
Structure of Pectinic Substances from Phaseolus vulgaris Shells
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
Monoterpene Esters from Ferula ferulioides
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
Solid-Phase Phosphorylation of Polysaccharides by Phosphorus Pentoxide
Phosphorylated derivatives of polysaccharides (PSs) such as water-soluble starch, carboxymethylcellulose, apple pectin, poly(galacturonic acid), alginic acid, poly(mannuronic acid), poly(guluronic acid), chitosan, and arabinogalactan were prepared under mild conditions by solid-phase reactions with P2O5. The phosphorylation reactions featured formation of various types of fragments from mono- and disubstituted monophosphates to disubstituted polyphosphates in the PS phosphates. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
Index of Natural Objects
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 31, 2023 Category: Chemistry Source Type: research
A New Cycloartane Triterpenoid from Daphne pedunculata
A new cycloartane triterpenoid, (23E)-9,19-cycloart-23-ene-3α,25-diol (1), was isolated from the aerial part ofDaphne pedunculata. The structure was elucidated via combinational analysis of HR-MS and NMR spectroscopic techniques. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
Chemical Constituents of Salvia cavaleriei var. simplicifolia
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
Flavonoids from Erigeron annuus
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
A New Geranyl Phenylacetate Glycoside from the Twigs of Aphanamixis polystachya
A new geranyl phenylacetate glycoside, 14,15-dehydroxy-16-hydroxy- Δ14-cinnacasside E (1) was isolated from the twigs ofAphanamixis polystachya. The structure of the isolated compound was elucidated by various spectroscopic methods, including 1D and 2D NMR experiments. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
Proteins from the Aerial Part of Delphinium leptocarpum and Their Biological Activity
The quantitative protein content ofDelphinium leptocarpum was 17.2%. Proteins, the amino-acid compositions of which featured high contents of leucine, cysteine, and aspartic and glutamic acids, were detected in the aqueous layer after extracting alkaloids from it. The anxiolytic and hypoglycemic activities of the studied protein were evaluated. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
New Purine Alkaloid from Gleditsia triacanthos and Its Effect on the CNS
The new purine derivative ethyl [3-(3-methylbut-2-enyl)-3H-purin-6-yl]carbamate, which exhibited psychostimulant and anticonvulsant activity, and triacanthine were isolated from leaves ofGleditsia triacanthos L. The structure of the new alkaloid was established by NMR spectroscopy and an X-ray crystal structure analysis. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
Secondary Metabolites and Biological Activity of Endophytic Fungus Aspergillus terreus from Plantago asiatica
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
A New Chlorogentisyl Alcohol Derivative from the Marine-Derived Fungus Epicoccum sorghinum
Chemical investigation of the marine-derived fungusEpicoccum sorghinum GXIMD02001 has led to the isolation of a new compound, 3-chloro-2,5-dihydroxybenzyl acetate (1), together with three known compounds, 3-chlorogentisyl alcohol (2), 2-chloro-6-(methoxymethyl)benzene-1,4-diol (3), and (R)-mevalonolactone (4). Compounds1 –3 exhibited weak antibacterial activity with MIC values of 7.81 –125 μg·mL–1. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
Chemical Constituents of Litsea machilifolia
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - July 29, 2023 Category: Chemistry Source Type: research
