A chemical investigation of the extract of the marine-sponge-associated fungus P. colombiensis resulted in the isolation of eight chlorinated benzophenone derivatives, named, pestalone (1), pestalachlorides A-C, E, and F (2-6), pestalalactone (7), and pestalalactone atropisomer (8). The structures of these compounds were identified by spectroscopic analysis (MS, 1D/2D NMR) and comparison with the previously

Miconia albicans (Sw.) Triana and Miconia chamissois Naudin, commonly known as “pixirica” and “pixirica-açu”, two Melastomataceae species, are commonly found in Cerrado areas. M. albicans species grows in dry and humid habitats, so it has adapted to both conditions and M. chamissois species grows in humid environment only. In this work, we have investigated the content of triterpenes, flavonols and

Processive phytochemistry and pharmacological investigation of Schefflera leucantha R.Vig. (Araliaceae) led to the isolation of fifteen known compounds: a nucleobase (1), six small aromatic molecules (2–7), three phenylpropanoids (8–10), four lignans (11–14) and a fatty acid derivative (15). Spectroscopic methods were used to establish the structure and configuration of isolates, followed by their

Phytochemical investigation on the flower buds of Daphne genkwa led to the isolation of 22 compounds, including 17 daphne diterpenes (1–17), three tigliane types (18–20), and two diphenylpentanes (21–22). Compounds 19–21 were isolated from D. genkwa for the first time. These compounds were elucidated using spectroscopic methods and by comparing their data to those reported in the literature. On the

From the Uncaria rhynchophlly (Miq.) Jacks, twelve monoterpene indole alkaloids, such as harman (1), strictosamide (2), vincosidelactam (3), cadambine (4), 3α-dihydrocadambine (5), 7-epi-javaniside (6), rhynchophylline (7), isorhynchophylline (8), hirsutine (9), vincosamide-6′-O-β-D-glucopyranoside (10), vincosamide-11-O-β-D-glucopyranoside (11) and 2′-O-[β-D-glucopyranosyl-(1 → 6)-β-D-glucopyrano

Fourteen compounds were isolated from fruits of Ziziphus jujuba Mill., including two flavonoids (1–2), one phenolic glycosides (3), one lignan (4), four phenols (5–8), three alkaloid (9–10, 14), three sesquiterpenoid (11–13). The structures of all the compounds were established by the NMR techniques, as well as by comparison with previously reported data in literature. Compounds 2″-glucosyl-8-C-gl

Diterpenoid alkaloids have been acknowledged as of chemotaxonomic significance in plants from the genus Aconitum (Ranunculaceae). Phytochemical investigation on the Aconitum spathulatum W. T. Wang, an endemic Aconitum species in China, has led to the isolation of twelve C19-diterpenoid alkaloids. The chemotaxonomic significance of these compounds are summarized.

The phytochemical investigations on the rhizome of Menispermum dauricum DC. led to the isolation of 18 compounds, including eleven alkaloids (1–11), four amides (12–15) and three fatty acids (16–18). All chemical structures were established on the basis of NMR (1H NMR and 13C NMR) spectroscopic data. Meanwhile, compounds 5–6, 9–10 and 13–18 are reported for the first time from Menispermum genus, as

Phytochemical study on the stems and leaves of Clausena dunniana H. Lév. led to the isolation and identification of 14 coumarins (1–14). Their chemical structures were determined on the basis of MS, NMR, and further supported by comparison with those reported in the literature. This is the first report that compounds 1–2, 4, 8, and 12–14 are present in the genus Clausena, and all of these compounds

Phytochemical analysis of isolates from the aerial parts of Clausena lansium Lour. Skeels (Rutaceae) led to the identification of 14 alkaloids, including two indole alkaloids (1 and 2), one quinoline alkaloid (3), two pyridine alkaloids (4 and 5), four carbazole alkaloids (6–9) and five amides alkaloids (10–14). The phytochemical structures of the alkaloids were established by means of NMR and MS spectral

Black locust (Robinia pseudoacacia L.) is one of the important biomass sources used to produce bioenergy and bioethanol. In this study, we examined variations in chemical composition as well as genetic diversity and differentiation among 165 black locust plants from seven populations in five provinces (Beijing, Hebei, Gansu, Shanxi, Shandong) of Northern China using microsatellite markers(SSR). The

Phytochemical study of the aerial parts of Senefelderopsis croizatii Steyerm., led to the isolation and characterization of 14 known compounds, 10 triterpenoids with different skeletons type, friedelane, oleanane, ursanes, lupanes, and cycloartanes, two glycosylates flavonoid, and one iridoid. The chemical structure of those isolated metabolites was obtained by extensive spectrometric, and spectroscopy

Essential oil (EO) properties of six L. angustifolia (LA) and two L. x intermedia (LI) cultivars were evaluated during summer harvest periods of 2017 and 2018, The cultivars were grown in Dörgicse, Hungary. According to our results, the essential oil (EO) content was highly dependent on the varieties in both experimental years (2017: p < 0.0001 and 2018: p < 0.0001). In 2017, the EO content values

Chemical biodiversity of essential oils of natural populations of Deverra scoparia growing in different regions in Algeria, and spreading from of semiarid to Saharan territories, was assessed. More than 60 compounds were identified by GC and GC-MS. Both phenylpropanoids and phathalids classes of bioactive components in leaves part were exhibiting drastic variations: (0.77–59.46%) and (0.04–28.55%)

Since Myrtaceae is considered a complex family concerning the taxonomic classification due to the elevated number of components, difficult morphologic differentiation, and relatively low amount of studies in area, this article describes the potentiality of classification using chemometrics applied to UPLC-qToF/MS-MS dataset for chemotaxonomy investigation of leaves of fifteen species from the genus

Gnetum species have been traditionally consumed as food and used as folk medicine to treat various pathological conditions. Ten compounds including three simple phenolic compounds (1–3), five stilbenoids (4, 5, 8–10), and two C-glycosyl flavanones (6 and 7), were isolated from the stems of Gnetum macrostachyum Hook. f. The structures of these compounds were elucidated by the analysis of spectroscopy

In recent years we initiated extensive studies on the characterization of the population structure of wild Lactuca relatives (WLRs) originating from their center of origin and diversity in Southwest Asia. A comparative phytochemical study of nine sesquiterpene lactones in natural populations of the wild lettuce L. altaica Fisch. & C.A. Mey. (Asteraceae) was performed, based on 22 plants, representing

In this study the volatile components of four Inula species (Inula germanica L., I. bifrons (L.) L., I. ensifolia L., and I. salicina L.) were analysed by GC-FID/MS. A total of 141 chemical compounds were identified. A distinct volatile chemical profiles with high variation in the type of compounds was observed. Inula germanica was rich in oxygenated monoterpenes (54.7%), with cis-carvyl acetate (20

Phytochemical investigation of the fruits of Solanum incanum L. resulted in the isolation of nine compounds, including three steroidal glycoalkaloids (1-3), two neolignans (4–5), two simple phenolics (6–7), one monoterpene glycoside (8), and one coumarin glucoside (9). The structure elucidation of isolated compounds was determined based on NMR and mass spectral data. Compounds 4 and 9 were isolated

Fifteen compounds were obtained from the extract of the whole herbs of Aristolochia tagala, which were divided into eight aristolactam-type alkaloids (1–6, 14 and 15) and seven aristolochic acid derivatives (7–13). Their structures were identified as aristolactam BII, aristolactam II, sauristolactam, aristolactam I, 7-methoxyaristolactam IV, aristolactam AII, 3-hydroxy-4-methoxy-10-nitrophenanthrene-1-carboxylic

Phytochemical investigation of Helleborus thibetanus led to the isolation of two new bufadienolides with a trans A/B ring fusion mode (1–2) and two known ones (3–4), three podophyllotoxins (5–7), two flavones (8 and 9), one phytoecdysteroid (10), one spirostane (11) and one pseudo-spirostane (12). The structures of the new compounds were identified using extensive spectroscopic analyses and the known

Reseda lutea L. belongs to the Resedaceae family included in the order of Brassicales. R. lutea is a plant worthy of investigation on an ecological level for its ability to adapt to extreme environmental conditions and for its capacity to attract honeybees and wild pollinators. In the ancient pharmacotherapy it was also known for its healing properties. R. lutea glucosinolates (GSLs) were investigated

Death camas (Zigadenus spp.) is a common poisonous plant in North America with plants occurring in a wide variety of habitats with species of toxic concern occurring primarily in meadows, grasslands, shrublands, and mountains. The toxicity of Zigadenus species has been attributed to a series of steroidal alkaloids. The objective of this study was to evaluate zygacine and total steroidal alkaloid concentrations

Convolvulaceous species have been reported to contain several bioactive principles thought to be toxic to livestock including the calystegines, swainsonine, ergot alkaloids, and indole diterpene alkaloids. Swainsonine, ergot alkaloids, and indole diterpene alkaloids are produced by seed transmitted fungal symbionts associated with their respective plant host, while the calystegines are produced by

Phytochemical investigation of the leaves of Cecropia schreberiana Miq. (Urticaceae) led to the isolation of four triterpenoids (1-4), three flavone C-glycosides (5-7), two flavan-3-ols (8, 9), two flavanolignans (10, 11), and two proanthocyanidins (12, 13). All compounds were isolated from C. schreberiana for the first time. This is the first report demonstrating the presence of arjunolic acid (4)

Aerial parts of Centaurea tweediei from Argentina afforded as the main constituent the sesquiterpene lactone onopordopicrin and minor amounts of a new heliangolide, a new guaianolide, a new eudesmanolide, a new eudesmane acid and the lignans arctigenin and matairesinol.

Flavonoids have been shown to be good taxonomic markers for Asteraceae. More than 800 compounds comprising 4700 flavonoid occurrences were included in a computational system specially made for chemotaxonomic purposes. Some implications of flavonols, flavones and other types as well as structural features of them are discussed for tribes and subtribes of Asteraceae.

Lipophilic and vacuolar flavonoids were separately identified in representative temperate species of the genera Anthemis, Chrysanthemum, Cotula, Ismelia, Leucanthemum and Tripleurospermum. The four Anthemis species investigated variously produced four main surface constituents, in leaf and flower: santin, quercetagetin 3,6,3'-trimethyl ether, scutellarein 6,4'-dimethyl ether and 6-hydroxyluteolin 6

Seeds of a number of species in the Liliaceae (sensu Brummitt, 1992) were examined for the presence of ecdysteroid agonist and antagonist activities. No species were antagonistic to 20-hydroxyecdysone action on the ecdysteroid-responsive Drosophila melanogaster B(II) cell line and only one extract, that of Lloydia serotina, was agonistic. This activity is attributable to the presence of phytoecdysteroids

The expression patterns of 14 enzymatic systems in skeletal muscle, liver and heart tissues of three species of Hypostomus from the Iguaçu River basin (Brazil) were investigated. Although the patterns were similar for the three species, different tissues showed differential expressions, and the data showed that differential tissue expressions of isoperoxidases may be due to preferential combination

DNA sequence comparisons of two mitochondrial DNA genes were used to infer phylogenetic relationships among four species of mullids. Approximately 238bp of the mitochondrial 16S ribosomal RNA (rRNA) and 261bp of the cytochrome b (cytb) genes were sequenced from representatives of three mullid genera (Mullus, Upeneus, Pseudopeneus), present in the Mediterranean Sea. Trees were constructed using three

Bioassay/radioimmunoassay (RIA) analysis of the seeds of four Lamium species, L. album, L. galeobdolon, L. maculatum and L. pupureum revealed the presence of phytoecdysteroids in all of them. Bioassay/RIA-guided and photo-diode array-monitored HPLC analysis of the aerial parts of L. album and L. purpureum led to the isolation of four known ecdysteroids (abutasterone, inokosterone, polypodine B and

Common blue butterflies (Polyommatus icarus) sequester flavonoids from their larval food and store these pigments as part of their adult wing colouration. Insects were reared on 10 different diets to assess effects of host plants on variation in flavonoid sequestration in this moderately polyphagous butterfly. Rearing experiments revealed an unexpectedly large gradient in flavonoid richness, ranging