Showing papers in "Phytochemistry in 2023"

TL;DR: In this article , the authors explored how matrix assisted laser desorption ionization (MALDI) and DESI-MSI can be used in the investigation of a proposed biosynthetic pathway by localizing reserpine and the theoretical intermediates of it.

TL;DR: In this article , sesquistrachanoid A-F were previously undescribed ones, whose structures including absolute configurations were elucidated by spectroscopic methods, the Mo2(OAc4-induced ECD experiment, and analysis of experimental and calculated 1D NMR and ECD data.

TL;DR: In this article , three unprecedented thioether-linked dimeric pyrimidines, namely ligusticumines A−C, together with twelve known compounds were isolated and identified from the traditional Chinese medicinal-edible herb, Ligusticum striatum DC.

TL;DR: In this paper , a bioassay-guided investigation of the active fraction of Artemisia princeps led to 13 undescribed sesquiterpenoid dimers, artemiprinolides A-M (1-13), together with 11 known ones (14-24).

TL;DR: In this paper , four undescribed palmarumycin-type spirodioxynaphthalenes (phyligustricins A, B, C and D) and a known biogenetic precursor (palmarumm ycin BG1) were isolated from a solid fermentation of Phyllosticta ligustricola HDF-L-2, an endophyte associated with the endangered Chinese conifer Pseudotsuga gaussenii.

TL;DR: The absolute configurations of spiro-flavostilbenoids found in the bark of Yucca schidigera Roezl ex Ortgies were determined by applying time-dependent density functional theory simulation of electronic circular dichroism spectra as mentioned in this paper .

TL;DR: In this paper , two undescribed sesquiterpenoids, namely sinulalides A and B, along with eight known terpenoids were isolated from the South China Sea soft coral Sinularia scabra.

TL;DR: In this article , the primary antioxidant properties of eight representative phytocannabinoids have been systematically studied against a variety of biologically significant radical species using the density functional theory (DFT) method.

TL;DR: In this paper , the authors classified the cembrane-type diterpenoids into isopropyl (ene) type, γ-lactone or unsaturated five-membered ring, δ-Lactone, unsaturated six-mesbered ring and unsaturated seven-meshed ring.

TL;DR: Sarcophyton elegans is composed of the rare tricyclo [11.2.1.0] hexadecane carbon framework which is the third compound of this scaffold as mentioned in this paper .

TL;DR: In this article , the underground parts of Valeriana sisymbriifolia Vahl have been studied for the isolation of 12 secondary metabolites including two undescribed iridoids and two unreported sesquiterpene lactones, sisymriifolins A and B. Chemical structures of the isolate were established by extensive 1D and 2D NMR analyses as well as HR-ESI-MS.

TL;DR: Abikorane A represents the second example of nor-3,4,seco-17,14-friedo-lanostane triterpenoid as discussed by the authors .

TL;DR: In this paper , 10 undescribed compounds, including a flavanone (1), four chrysin C-glycosides (2-5), a phenanthrene glucoside (6), four iridoid glucosides (7-10) and 31 known compounds were identified from an extract of the aerial parts of Scutellaria scordiifolia Fisch.

TL;DR: Turner has identified ten undescribed dimeric aporphine alkaloids, trivalcostatines A-J, one undiscribed isoquinoline alkaloid, trivelcostaisoquinoline, and four known a porphine aloids as discussed by the authors .

TL;DR: In this article , four bisabolane sesquiterpenes and one cyclopentene derivative, together with one undescribed naturally occurringcyclopentenone derivative, were isolated and identified from the culture of the endophytic fungus Trichoderma asperellum EN-764, which was obtained from the marine red alga Palisada papillosa.

TL;DR: In this article , a total of 35 sesquiterpenoids, including 10 previously unreported ones, were isolated from A. oxyphylla fruits under the guidance of LC-MS, and evaluated their neuroprotective effects on the H2O2-induced SH-SY5Y cells.

TL;DR: The membrane interaction characteristics of five antifungal plant defensin peptides: NaD1, HXP4 and L5, as well as NaD2 and ZmD32 were studied in typical neutral and charged model membranes using quartz crystal microbalance with dissipation (QCM-D) as discussed by the authors .

TL;DR: In this article , Salvia cavaleriei H.Lév is used as a traditional Chinese herbal medicine and 12 undescribed germacrane-type sesquiterpenoids, salcavalins A-L, were isolated from the whole plant and were identified as analogs.

TL;DR: The n-BuOH extract from the herb of Solanum lyratum Thunb was purified by various chromatographic methods, which led to the isolation of seven undescribed alkaloids as discussed by the authors .

TL;DR: In this article , 14 undescribed seco-type diterpenoids, named nudifloids A-N, together with ten known analogs, were isolated from the leaves of Callicarpa nudiflora.

TL;DR: In this article , a detailed phytochemical investigation on the traditional Chinese medicine Swertia pseudochinensis Hara led to the isolation of ten undescribed secoiridoids and fifteen known analogs.

TL;DR: In this paper , a review summarizes and critically discusses the research work on the chemical composition and pharmacological activities of essential oil of the genus Sideritis based on the currently valid taxonomy.

TL;DR: In this paper , the impact of abiotic stresses on the leaf metabolome of commercial eucalyptus trees with differential phenotypic response to this stress was investigated. But the results obtained in this work allowed us to classify clones differing in drought tolerance.

TL;DR: In this paper , a new class of phyto-alexins from Bipolaris oryzae infected leaves of a rice cultivar was detected, which were diterpenoids containing a benzene ring and were detected from the pathogen-infected rice leaves.

TL;DR: In this paper , the authors identify the pigment-depleted extract Pterocarpus santalinus L. f. as the most promising yet still complex source of metabolites acting as an inhibitor of CX3CL1 gene expression.

TL;DR: In this article , chemical constituent analysis on the n-BuOH extract of the rhizomes of Tupistra chinensis Baker leads to the isolation of ten compounds including eight undescribed furostanol saponins, tupischinosides A - H, and two known ones.