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Relevant bibliographies by topics / 15–Trihydroxy–12

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Journal articles

Academic literature on the topic '15–Trihydroxy–12'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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

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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