New Galactopinitol from Seeds of Trigonella caerulea
A study of the chemical composition of polar compounds from seeds ofTrigonella caerulea (L.) Ser. (Fabaceae) revealed the presence of monosaccharides (2 and3); oligosaccharides (4 –7); pinitol (8) and galactopinitols (1 and9 –11), including the new compound1; glycosides of diosgenin (12 –15); and alkaloids (16 –22). Mass spectrometry, chemical transformations, and NMR spectroscopy established that1 wasO-(α-Dgalactopyranosyl)-(1 →6)-O-(α-D-galactopyranosyl)-(1 →6)-O-(α-D-galactopyranosyl)-(1 →6)-O-(α-Dgalactopyranosyl)-(1 →2)-4-O-methyl-chiro-inositol (tetragalactopinitol A). (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Bioactive Flavonoid Constituents from Callicarpa rubella
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Synthesis of 5-(Hydroxymethyl)-2-Furfurylamines Based on 5-Hydroxymethylfurfural
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Chemical Constituents of Balanophora laxiflora
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Chemical Compounds from Leaves and Stems of Aconitum carmichaelii
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
A New Thiohydantoin Derivative from the Roots of Lepidium meyenii
Macathiohydantoin S (1), a new thiohydantoin derivative, was isolated from the roots ofLepidium meyenii (Maca) collected from Qujing, Yunnan Province of China. The structure of1 was elucidated on the basis of extensive spectroscopic data, including 1D NMR (1H NMR,13C NMR), 2D NMR (HSQC, HMBC, and COSY) and HR-ESI-MS techniques. The cytotoxicities against five human cancer cell lines of compound1 were also evaluated. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Minor Polybrominated Diphenyl Ethers from the Marine Sponge Dysidea fragilis
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Chemical Composition and Antioxidant Activity of Essential Oil from Cosmos sulphureus
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
Constituents of the EtOH Extract of Ferula persica Roots
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 8, 2023 Category: Chemistry Source Type: research
A New Ferulic Acid Derivative from Pimpinella thellungiana
A new ferulic acid derivative, (1R,2R)-2-O-E-feruloyl-1-(4-hydroxyphenyl)butane-1,2-diol (1) together with six known compounds (2 –7), was isolated from the extracts ofPimpinella thellungiana H.Wolff. The structures of compounds were identified by MS, NMR spectroscopy, NMR calculation, ECD, and comparisons of spectroscopic data. Compounds1 –7 were further evaluated for their anti-inflammatory activities on LPS-induced RAW 264.7 cells. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
Fatty-Acid Composition of the Crustacean Caenestheria davidi from Lake Barun-Torey (Eastern Transbaikal)
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
Lipids from Leaves of Pulmonaria obscura
(Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
The Phenylpropanoids from Aster tataricus
By using column chromatographies, preparative HPLC, and other separation techniques, the phenylpropanoids in Aster tataricus L. f. were isolated and purified. The structures of compounds were recognized by MS and NMR techniques as 16 phenylpropanoids, including 6 flavonoids, a coumarin and 9 lignans. Among them,1 was a new flavonoid glycoside, and2,7 –16 were first isolated fromA. tataricus. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
Two New Isoprenylated Flavonoids from the Roots of Artocarpus heterophyllus
Two new isoprenylated flavonoids, namely artoheteroids F and G (1 and2), were isolated from the roots ofArtocarpus heterophyllus. Their structures were determined by spectroscopic methods including 1D and 2D NMR, UV, IR, and HR-ESI-MS. (Source: Chemistry of Natural Compounds)
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
Two New Dihydrochalcone Glucosides from Balanophora subcupularis
Two new dihydrochalcone glucosides, phloretin-4 ′-O-(4 ′′-O-galloyl)-β-D-glucoside (1) and phloretin-4 ′-O-(3′′-O-galloyl)-β-D-glucoside (2), were isolated from the fresh aerial part ofBalanophora subcupularis P.C.Tam, together with eight known flavonoid glycosides, phloretin-4 ′-O-(6′′-O-galloyl)-β-D-glucoside (3), trilobatin (4), 3-hydroxyphloretin-4 ′-O-β-D-glucoside (5), phloretin-4 ′-O-(4 ′′,6′′-O-Sa-hexahydroxydiphenoyl)-β-D-glucoside (6), naringenin-7-O-β-D-glucoside (7), eriodictyol-7-O-β-D-glucoside (8), kaempferol-7-O-β-D-glucoside (9), and quercetin-7-O-β-D-glucoside (10). ...
Source: Chemistry of Natural Compounds - November 7, 2023 Category: Chemistry Source Type: research
