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Journal articles on the topic '15–Trihydroxy–12'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Hosokawa, Masashi, Ching T. Hou та David Weisleder. "Production of Novel Tetrahydroxyfuranyl Fatty Acids from α-Linolenic Acid by Clavibacter sp. Strain ALA2". Applied and Environmental Microbiology 69, № 7 (2003): 3868–73. http://dx.doi.org/10.1128/aem.69.7.3868-3873.2003.

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ABSTRACT Previously, it was reported that a newly isolated microbial culture, Clavibacter sp. strain ALA2, produced trihydroxy unsaturated fatty acids, diepxoy bicyclic fatty acids, and tetrahydroxyfuranyl fatty acids (THFAs) from linoleic acid (C. T. Hou, J. Am. Oil Chem. Soc. 73:1359-1362, 1996; C. T. Hou and R. J. Forman III, J. Ind. Microbiol. Biotechnol. 24:275-276, 2000; C. T. Hou, H. Gardner, and W. Brown, J. Am. Oil Chem. Soc. 75:1483-1487, 1998; C. T. Hou, H. W. Gardner, and W. Brown, J. Am. Oil Chem. Soc. 78:1167-1169, 2001). In this study, we found that Clavibacter sp. strain ALA2 p

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2

Pandey, Jitendra, Bang Yeon Hwang, Hyeong-Kyu Lee, and Amrit Poudel. "Pimarane Diterpenoids from Aerial Parts of Lycopus lucidus and Their Antimicrobial Activity." Evidence-Based Complementary and Alternative Medicine 2022 (February 4, 2022): 1–9. http://dx.doi.org/10.1155/2022/5178880.

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The ethyl acetate fraction obtained from aerial parts of L. lucidus was subjected for isolation of new bioactive compounds, which enabled isolation of five new pimarane-type diterpenoids, namely, 3β, 8β, 12β, 18-tetrahydroxy pimar-15-ene (10), 7α, 8β, 12β, 18-tetrahydroxy pimar-15-ene (11), 3β, 8β, 11β, 12α, 18-pentahydroxy pimar-15-ene (12), 12β acetoxy, 8β, 3β, 18-trihydroxy pimar-15-ene (13), and 3β acetoxy, 8β, 12β, 18-trihydroxy pimar-15-ene (14), along with nine known compounds. The structures were elucidated by spectroscopic analysis and comparison with literature data. The isolated new

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3

Lazanaki, Maria, George Tsikalas, Olga S. Tsiftsoglou, Haralambos Katerinopoulos, Dimitra Hadjipavlou-Litina, and Diamanto Lazari. "Secondary Metabolites and Their Biological Evaluation from the Aerial Parts of Staehelina uniflosculosa Sibth. & Sm. (Asteraceae)." International Journal of Molecular Sciences 25, no. 19 (2024): 10586. http://dx.doi.org/10.3390/ijms251910586.

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Phytochemical investigation of Staehelina uniflosculosa Sibth. & Sm. resulted in the isolation of twenty-two natural products: eleven sesquiterpene lactones, artemorin (1), tamirin (2), tanachin (3), reynosin (4), baynol C (5), desacetyl-β-cyclopyrethrosin (6), 1β-hydroxy-4α-methoxy-5α,7α,6β-eudesm-11(13)-en-6,12-olide (7), 1β,4α,6α-trihydroxyeudesm-11-en-8α,12-olide (8), 1β-hydroxy-arbusculin A (9), methyl-1β,4α,6α-trihydroxy-5α,7αH-eudesm-11(13)-en-12-oate (10) and methyl-1β,6α,8α-trihydroxy-5α,7αH-eudesma-4(15),11(13)-dien-12-oate (11); one lignan, pinoresinol (12); one norisoprenoid, l

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4

Wan, Jiang, Xiao-Juan Wang, Nan Guo, et al. "Highly Oxygenated Triterpenoids and Diterpenoids from Fructus Rubi (Rubus chingii Hu) and Their NF-kappa B Inhibitory Effects." Molecules 26, no. 7 (2021): 1911. http://dx.doi.org/10.3390/molecules26071911.

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During a phytochemical investigation of the unripe fruits of Rubus chingii Hu (i.e., Fructus Rubi, a traditional Chinese medicine named “Fu-Pen-Zi”), a number of highly oxygenated terpenoids were isolated and characterized. These included nine ursane-type (1, 2, and 4–10), five oleanane-type (3, 11–14), and six cucurbitane-type (15–20) triterpenoids, together with five ent-kaurane-type diterpenoids (21–25). Among them, (4R,5R,8R,9R,10R,14S,17S,18S,19R,20R)-2,19α,23-trihydroxy-3-oxo-urs-1,12-dien-28-oic acid (rubusacid A, 1), (2R*,4S*,5R*,8R*,9R*,10R*,14S*,17S*, 18S*,19R*,20R*)-2α,19α,24-trihyd

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5

Pongoh, Emma J., Rymond J. Rumampuk, Ponis Tarigan, Anthony J. Herlt, and Lewis N. Mander. "ISOLATION OF AN ANTIFEEDANT TRITERPENOID FROM THE SEED OF Barringtonia asiatica." Indonesian Journal of Chemistry 4, no. 1 (2010): 49–57. http://dx.doi.org/10.22146/ijc.21873.

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An antifeedant triterpenoid saponin has been isolated from the seed of Barringtonia asiatica and its structure elucidated mainly by two dimensional NMR spectroscopy is identified as 3-O-{[β-D-galactopyranosyl(1→3)-β-D-glucopyranosyl (1→2)]-β-D-glucuronopyranosyloxy}-22-O-[2-(E)-methyl-2-butenyloyloxy]-15, 16,28-trihydroxy-(3β,15α,16α,22α)-olean-12-ene. This compound showed antifeedant activity towards Epilachna sp larvae Keywords: Barringtonia asiatica, saponin, antifeedant

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6

Alam, Tanveer, Ahmed Sulaeman Al Harrasi, Bahar Ahmed, Lubna Najam, and Shah Alam Khan. "Three New Flavonoid Glycosides from the Fruits of Luffa echinata Roxb.- a Hepatoprotective Plant." Dhaka University Journal of Pharmaceutical Sciences 15, no. 2 (2017): 117–25. http://dx.doi.org/10.3329/dujps.v15i2.30924.

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Phytochemical investigation of bioactive polar extracts of Luffa echinata Roxb. fruits led to the isolation and characterization of three new flavone glycosides viz., 3,5,7,3?,4?-pentahydroxyflavone-3-[-O-?-Dglucopyranosyl- 7-O-?-D-glucopyranoside (1),3,5,7-trihydroxy-(7?,8?- dioxo,9?,10?,-dihydro[a]cyclohex ?13?,(14?), ?11?(12)-12?,13?,-dimethyl)-flavone-7-[-O-?-D-galactopyranosyl-(1?2)]-O-?-D-glucopyranoside (2), and 5,7,8,4?- tetrahydroxy flavone-7-[-O-?-D-xylosyl-(1?2)]-O-?-D-glucopyranoside (3). The structures of the newly isolated compounds were elucidated on the basis of spectral data

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7

Ferth, Roland, Andreas Baumann, Wolfgang Robien, and Brigitte Kopp. "Cardenolide aus Ornithogalum nutans (2 n = 28), 1. Mitteilung / Cardenolides from Ornithogalum nutans (2 n = 28), Part." Zeitschrift für Naturforschung B 47, no. 10 (1992): 1444–58. http://dx.doi.org/10.1515/znb-1992-1017.

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From leaves and bulbs of Ornithogalum nutans L. (2 n = 28), seventeen cardenolides were isolated by column chromatography, DCCC and TLC. The structure elucidation was performed by means of 1H NMR, 13C NMR, HH-Cosy, HC-Cosy and FAB-MS studies and identification of the sugar moieties by GLC after acid hydrolysis of the cardenolides. Sugar compounds were identified as digitoxose, 3-acetyl-digitoxose, 2-deoxy-allose, 6-deoxy-allose, rhamnose, xylose and apiose. Glycosides of 7β,15β, 16 α-trihydroxy-uzarigenin, 8β,16 α-dihy-droxy, 15-oxo-uzarigenin, 3 β, 11β-dihydroxy, 12-oxo, 18-nor-5 α-card-13-en

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8

Al-Mekhlafi, Nabil Ali, Khozirah Shaari, Faridah Abas та ін. "New Flavan and Alkyl α,β-Lactones from the Stem Bark of Horsfieldia Superba". Natural Product Communications 8, № 4 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800409.

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In the present study phytochemical investigation of the methanol extract of the stem bark of Horsfieldia superba led to the isolation of twenty compounds (1-20), of which three (1-3) were new. However, compounds 2 and 3 were previously reported as synthetic α, β-lactones. The compounds were characterized as (-)-3,4′,7-trihydroxy-3′-methoxyflavan (1), (-)-5,6-dihydro-6-undecyl-2 H-pyran-2-one (2), and (-)-5,6-dihydro-6-tridecyl-2 H-pyran-2-one (3). Seventeen other known compounds were also isolated and identified as (-)-viridiflorol (4), hexacosanoic acid (5), β-sitosterol (6), methyl 2,4-dihyd

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9

Longue Ekon, Jean Pierre, Achille Nouga Bissoue, Marie Fomani, et al. "Cytotoxic 24-nor-ursane-type triterpenoids from the twigs of Mostuea hirsuta." Zeitschrift für Naturforschung B 70, no. 11 (2015): 837–42. http://dx.doi.org/10.1515/znb-2015-0083.

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AbstractTwo new 24-nor-ursane-type triterpenoids, 2α,3β,19α-trihydroxy-24-norurs-4(23),12-dien-28-oic acid (1) and 3β-acetoxy-2α,19α-dihydroxy-24-norurs-4(23),12-dien-28-oic acid (2), along with 15 known compounds were isolated from the methanol extract of the twigs of Mostuea hirsuta. While 2-hydroxymethylbenzamide (13) was isolated for the first time from the natural source, compounds 3–12 are reported here for the first time from the genus Mostuea. Their structures were elucidated by means of spectroscopic analyses including 1D- and 2D-NMR spectroscopy, high-resolution mass spectrometric da

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10

Uehara, Ayumi, Kazuhide Shimoda, Yoshinori Murai, and Tsukasa Iwashina. "Flavonoid Aglycones and Glycosides from the Leaves of some Japanese Artemisia Species." Natural Product Communications 13, no. 5 (2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300510.

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Sixteen Japanese Artemisia taxa were surveyed for flavonoid aglycones and glycosides. The leaves were rinsed with acetone and then extracted with MeOH. Isolated flavonoids were identified by UV, LC-MS, acid hydrolysis, 1H and 13C NMR, and/or HPLC comparisons with authentic samples. Thus, nine flavone aglycones, apigenin (10), luteolin (5), chrysoeriol (11), hispidulin (6), jaseosidin (7), nepetin (15), sudachitin (8), luteolin 7-methyl ether (13) and eupatilin (14), three flavonol aglycones, axillarin (9), quercetin 3-methyl ether (16) and 5,7,4′-trihydroxy-3,6-dimethoxyflavone (12), one flava

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11

Tsiftsoglou, Olga S., Nikos Krigas, Christos Gounaris, et al. "Isolation of Secondary Metabolites from Achillea grandifolia Friv. (Asteraceae) and Main Compounds’ Effects on a Glioblastoma Cellular Model." Pharmaceutics 15, no. 5 (2023): 1383. http://dx.doi.org/10.3390/pharmaceutics15051383.

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This study aims at the isolation and structural determination of the secondary metabolites of the herbaceous perennial plant Achillea grandifolia Friv. (Asteraceae). The examination of the non-volatile content of the leaves and flowers of A. grandifolia afforded the isolation of sixteen secondary metabolites. On the basis of NMR spectra, the identified compounds included ten sesquiterpene lactones; three guaianolides—rupicolin A (1), rupicolin B (2), and (4S,6aS,9R,9aS,9bS)-4,6a,9-trihydroxy-9-methyl-3,6-dimethylene-3a,4,5,6,6a,9,9a,9b-octahydro-3H-azuleno [4,5-b]furan-2-one (3); two eudesmano

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12

Uddin, Md Josim, Daniela Russo, Md Anwarul Haque, et al. "Bioactive Abietane-Type Diterpenoid Glycosides from Leaves of Clerodendrum infortunatum (Lamiaceae)." Molecules 26, no. 14 (2021): 4121. http://dx.doi.org/10.3390/molecules26144121.

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In this study, two previously undescribed diterpenoids, (5R,10S,16R)-11,16,19-trihydroxy-12-O-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl-17(15→16),18(4→3)-diabeo-3,8,11,13-abietatetraene-7-one (1) and (5R,10S,16R)-11,16-dihydroxy-12-O-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl-17(15→16),18(4→3)-diabeo-4-carboxy-3,8,11,13-abietatetraene-7-one (2), and one known compound, the C13-nor-isoprenoid glycoside byzantionoside B (3), were isolated from the leaves of Clerodendrum infortunatum L. (Lamiaceae). Structures were established based on spectroscopic and spectrometric data and by comparison wit

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13

Ko, Wonmin, Nayeon Kim, Hwan Lee, et al. "Anti-Inflammatory Effects of Compounds from Cudrania tricuspidata in HaCaT Human Keratinocytes." International Journal of Molecular Sciences 22, no. 14 (2021): 7472. http://dx.doi.org/10.3390/ijms22147472.

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The root bark of Cudrania tricuspidata has been reported to have anti-sclerotic, anti-inflammatory, antioxidant, neuroprotective, hepatoprotective, and cytotoxic activities. In the present study, the effect of 16 compounds from C. tricuspidata on tumor necrosis factor-α+interferon-γ-treated HaCaT cells were investigated. Among these 16 compounds, 11 decreased IL-6 production and 15 decreased IL-8 production. The six most effective compounds, namely, steppogenin (2), cudraflavone C (6), macluraxanthone B (12), 1,6,7-trihydroxy-2-(1,1-dimethyl-2-propenyl)-3- methoxyxanthone (13), cudraflavanone

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14

Dusserre, J. P., A. M. Montet, and J. C. Montet. "Effect of hyocholic acid on the prevention and dissolution of biliary cholesterol crystals in mice." Canadian Journal of Physiology and Pharmacology 66, no. 8 (1988): 1028–34. http://dx.doi.org/10.1139/y88-168.

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Gallstone prevention and dissolution were studied in a mouse model of cholesterol cholelithiasis using hyocholic acid (3α, 6α, 7α-trihydroxy-5β-cholanic acid). Addition of hyocholic acid, 0.1 or 0.3%, in the lithogenic diet (1% cholesterol + 0.5% cholic acid) prevented the formation of cholesterol monohydrate crystals in 70 and 90% of cases, respectively. On the other hand, chow diet supplemented with 0.1 or 0.3% hyocholic acid dissolved cholesterol crystals in lithiasic mice in, respectively, 80 and 100% of cases within 12 days. In both protocols, biles were largely supersaturated with choles

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15

Nasir Isa, Mohammedamin, Wendimagegn Mammo, and Estifanos Ele Yaya. "Phytochemical studies of Premna schimperi, and antioxidant activities of the extract and an isolated compound." Bulletin of the Chemical Society of Ethiopia 37, no. 6 (2023): 1471–86. http://dx.doi.org/10.4314/bcse.v37i6.14.

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ABSTRACT. In this study, the attempts were made to isolate secondary metabolites from the solvent extract of the dried leaves of Premna schimperi (P. schimperi). Thus, six compounds, namely, ent-8b,12-epidioxy-12b-hydroxylabda-9(11),13-dien-15-oic acid-g-lactone (1), 3,5,5'-trihydroxy-6,7,3',4'-tetramethoxyflavone (2) and 3,5,7,5'-tetrahydroxy-6,3',4'-trimethoxyflavone (3), p-hydroxycinnamic acid (4), luteolin (5) and 1-nonacosanol (6) were isolated and characterized by NMR, UV-Vis, MS and FTIR spectroscopic techniques. All the compounds; except luteolin (5) were reported for the first time fr

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16

Briliantama, Asadin, Nurul Mutmainah Diah Oktaviani, Sitti Rahmawati, Widiastuti Setyaningsih, and Miguel Palma. "Optimization of Ultrasound-Assisted Extraction (UAE) for Simultaneous Determination of Individual Phenolic Compounds in 15 Dried Edible Flowers." Horticulturae 8, no. 12 (2022): 1216. http://dx.doi.org/10.3390/horticulturae8121216.

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Nowadays, dried edible flowers have become one of the eating habits of a healthy lifestyle. The most common way to consume dried flowers is via infused water (tisane). A number of studies on dried edible flowers have reported antioxidant activities mainly due to their phenolic compounds. This work has developed a new extraction method using ultrasound technology to determine phenolic compounds in 15 widely consumed edible flowers. Several extraction factors including pulse duty cycle (0.2, 0.6, 1.0 s−1), temperature (10, 40, 70 °C), solvent-to-sample ratio (10:1, 20:1, 30:1 mL of solvent g −1

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17

Jia, Xuchao, Dan Yang, Yue Yang, and Haihui Xie. "Carotenoid-Derived Flavor Precursors from Averrhoa carambola Fresh Fruit." Molecules 24, no. 2 (2019): 256. http://dx.doi.org/10.3390/molecules24020256.

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The fruit of Averrhoa carambola L. (Oxalidaceae), commonly known as star fruit or carambola, is popular in tropical and subtropical regions. Carotenoid-derived components, mainly C13- and C15-norisoprenoids, contribute greatly to the flavor of star fruit. Previously reported norisoprenoids were tentatively identified by GC-MS analysis after enzymatic hydrolysis. To gain accurate information about glycosidically bound flavor precursors in star fruit, a phytochemical study was conducted, which led to the isolation of 16 carotenoid derivatives—One new C13-norisoprenoid glucoside, (5R,6S,7E,9R)-5,

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18

Tran, Thi Thu Phuong, Duong Thu Trang, Le Thanh Huong, et al. "Chemical Constituents from Memecylon Scutellatum with Nitric Oxide Inhibitory Activity." Natural Product Communications 19, no. 12 (2024). https://doi.org/10.1177/1934578x241304173.

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Objectives: Memecylon scutellatum (Lour.) Hook. & Arn. (Melastomataceae) is a relatively lesser-known species within this genus. This study aims to explore its chemical structure profile and evaluate its ability to inhibit NO production. Methods: The chemical structures of MS were elucidated by comparing their NMR data, and all compounds were evaluated for NO inhibition using the Griess assay. Results: One new compound namely, memeloside (1) and fourteen known compounds, 1- O-( β-D-glucopyranosyl)-2-[2-methoxy-4-( ω-hydroxypropyl)-phenoxy]-propan-3-ol (2), (2 R)- O-[4′-(3″-hydroxypropyl)-2

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19

Heidari, Alireza, та Ricardo Gobato. "First–Time Simulation of Deoxyuridine Monophosphate (dUMP) (Deoxyuridylic Acid or Deoxyuridylate) and Vomitoxin (Deoxynivalenol (DON)) ((3α,7α)–3,7,15–Trihydroxy–12,13– Epoxytrichothec–9–En–8–One)–Enhanced Precatalyst Preparation Stabilization and Initiation (EPPSI) Nano Molecules Incorporation into the Nano Polymeric Matrix (NPM) by Immersion of the Nano Polymeric Modified Electrode (NPME) as Molecular Enzymes and Drug Targets for Human Cancer Cells, Tissues and Tumors Treatment under Synchrotron and Synchrocyclotron Radiations". 21 серпня 2018. https://doi.org/10.5281/zenodo.3843580.

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In the current study, Deoxyuridine Monophosphate (dUMP) (Deoxyuridylic Acid or Deoxyuridylate) and Vomitoxin (Deoxynivalenol (DON)) ((3α,7α)–3,7,15–Trihydroxy–12,13–Epoxytrichothec–9–En–8–One) – Enhanced Precatalyst Preparation Stabilization and Initiation (EPPSI) Nano molecules incorporation into the Nano Polymeric Matrix (NPM) by immersion of the Nano Polymeric Modified Electrode (NPME) as molecular enzymes and drug targets for human cancer cells, tissues and tumors treatment under synchrotron and synchrocyclotron radiations w

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20

Cheng, Gui-Lin, Cheng-Jun Jiang, and Ying-Fan Xia. "The crystal structure of 4,4′-bipyridine-5,6,7-trihydroxy-2-phenyl-4H-chromen-4-one-water(1/2/2), C₄₀H₃₂N₂O₁₂." Zeitschrift für Kristallographie - New Crystal Structures, August 3, 2022. http://dx.doi.org/10.1515/ncrs-2022-0286.

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Abstract C40H32N2O12, triclinic, P 1 ‾ $P\overline{1}$ (no. 2), a = 7.403(3) Å, b = 8.275(3) Å, c = 14.571(4) Å, α = 106.115(15)°, β = 98.239(16)°, γ = 95.054(19)°, V = 840.9(5) Å3, Z = 1, R gt(F) = 0.0353, wR ref(F 2) = 0.0980, T = 170 K.

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