Relevant bibliographies by topics / Epi-isomers

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Academic literature on the topic 'Epi-isomers'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Epi-isomers"

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Son, Heebin, Keumhan Noh, InWha Park, et al. "Stereo-Selective Pharmacokinetics of Ilimaquinone Epimers Extracted from a Marine Sponge in Rats." Marine Drugs 17, no. 3 (2019): 171. http://dx.doi.org/10.3390/md17030171.

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An ilimquinone (IQ) mixture isolated from Hippiospongia metachromia, consisting of IQ and epi-ilimaquinone (epi-IQ), exerts anti-HIV, anti-microbial, anti-inflammatory, and anti-cancer effects. An HPLC-MS/MS method was developed for simultaneous determination of the two epimers in rat plasma, separating them using a biphenyl column. Ascorbic acid is added during the sample preparation to ensure the stability of both isomers. The plasma concentrations of the isomers were monitored following intravenous and oral administration of the IQ mixture in rats as well as the individual epimers that were
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Tanase, Constantin, Denisa Ioana Udeanu, Constantin Draghici, and Florea Cocu. "Synthesis and Characterization of 1-Ethylamide and 1-Ethanolamide of D-Cloprostenol and their 15-Epimers." Revista de Chimie 69, no. 12 (2019): 3349–52. http://dx.doi.org/10.37358/rc.18.12.6747.

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1-Ethylamide-, 1-ethanolamide of D-Cloprostenol and their 15-epi-isomers were synthesized by amidation of methyl esters of D-Cloprostenol or 15-epi-Cloprostenol. The crude compounds were purified by pressure chromatography on silica gel and fully characterized by IR, 1H-, 13C-, 2D-NMR (COSY and HETCOR) and MS spectroscopy.
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3

Sudhakar, Gangarajula, Karla Janardhan Reddy, and Jagadeesh Babu Nanubolu. "Total synthesis of palmyrolide A and its 5,7-epi isomers." Tetrahedron 69, no. 11 (2013): 2419–29. http://dx.doi.org/10.1016/j.tet.2013.01.048.

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4

Rabe, Patrick, and Jeroen S. Dickschat. "The EIMS fragmentation mechanisms of the sesquiterpenes corvol ethers A and B, epi-cubebol and isodauc-8-en-11-ol." Beilstein Journal of Organic Chemistry 12 (July 5, 2016): 1380–94. http://dx.doi.org/10.3762/bjoc.12.132.

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Farnesyl diphosphate (FPP) and all fifteen positional isomers of (13C1)FPP were enzymatically converted by the bacterial terpene cyclases corvol ether synthase from Kitasatospora setae, the epi-cubebol synthase from Streptosporangium roseum, and the isodauc-8-en-11-ol synthase from Streptomyces venezuelae. The enzyme products were analysed by GC–MS and GC–QTOF MS2 and the obtained data were used to delineate the EIMS fragmentation mechanisms of the two sesquiterpene ethers corvol ethers A and B, and the sesquiterpene alcohols epi-cubebol and isodauc-8-en-11-ol.
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5

Aparna, Das. "Quantitative structure-property relationships of Taxol, Taxotere and their epi-isomers." Journal of Indian Chemical Society Vol. 97, No. 11b, Nov 2020 (2020): 2468–76. https://doi.org/10.5281/zenodo.5656707.

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Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Prince Mohammad Bin Fahd University, Al Khobar 31952, Kingdom of Saudi Arabia <em>E</em>-<em>mail:</em> aparnadasam@gmail.com, adas@pmu.edu.sa <em>Manuscript received online 20 October 2020, revised and accepted 31 November 2020</em> The current study investigates the importance of molecular structure analysis based on density functional theory (DFT) with a focus on Taxol, Taxotere, and related compounds. Numerous physicochemical parameters of these compounds with respect to their biological activity are cal
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An, Xiaosheng, and Yikang Wu. "Synthesis of (+)-Panamonon B, 7-epi-Panamonon B, and Their (Z)-Isomers." Journal of Organic Chemistry 86, no. 17 (2021): 11948–59. http://dx.doi.org/10.1021/acs.joc.1c01344.

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7

Chen, Jie, Yang Li, and Xiao-Ping Cao. "First stereoselective synthesis of serinol-derived malyngamides and their 1′-epi-isomers." Tetrahedron: Asymmetry 17, no. 6 (2006): 933–41. http://dx.doi.org/10.1016/j.tetasy.2006.02.027.

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8

Sehaki, Chabha, Roland Molinie, David Mathiron, et al. "Metabolomics-Based Profiling via a Chemometric Approach to Investigate the Antidiabetic Property of Different Parts and Origins of Pistacia lentiscus L." Metabolites 13, no. 2 (2023): 275. http://dx.doi.org/10.3390/metabo13020275.

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Pistacia lentiscus L. is a medicinal plant that grows spontaneously throughout the Mediterranean basin and is traditionally used to treat diseases, including diabetes. The aim of this work consists of the evaluation of the α-glucosidase inhibitory effect (i.e., antidiabetic activity in vitro) of different extracts from the leaves, stem barks and fruits of P. lentiscus harvested on mountains and the littoral of Tizi-Ouzou in Algeria. Metabolomic profiling combined with a chemometric approach highlighted the variation of the antidiabetic properties of P. lentiscus according to the plant’s part a
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9

Braun, Norbert A., Jean-François Butaud, Jean-Pierre Bianchini, et al. "Eastern Polynesian Sandalwood Oil (Santalum insulare Bertero ex A. DC.) – a Detailed Investigation." Natural Product Communications 2, no. 6 (2007): 1934578X0700200. http://dx.doi.org/10.1177/1934578x0700200615.

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Three qualities of Eastern Polynesian sandalwood oil were analyzed using GC and GC-MS. Sixty-six constituents were identified: 5 monoterpenes, 58 sesquiterpenes and 3 others. The main constituents of the essential oils were ( Z)-α-santalol and ( Z)-β-santalol. Beside chemical composition, olfactory evaluation and chiral gas chromatography of β- and epi-β-bisabolol isomers confirmed the close relationship of Eastern Polynesian to East Indian and New Caledonian sandalwood oil.
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10

Martins, Júlia, Joana Coelho, Maraine Catarina Tadini, et al. "Yangambin and Epi-yangambin Isomers: New Purification Method from Ocotea fasciculata and First Cytotoxic Aspects Focusing on In Vivo Safety." Planta Medica 86, no. 06 (2020): 415–24. http://dx.doi.org/10.1055/a-1118-3828.

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Abstract Ocotea fasciculata presents yangambin (YAN) and its isomer epi-yangambin (EPI-YAN) as major lignans, which are employed as the plant markers for quality control purposes and as potential pharmacological compounds. However, a gap between the pure isomers and safety and efficacy protocols is faced by the scientific community. In this context, this work aimed to report (i) a new and advantageous purifying process in a semi-preparative scale for YAN and EPI-YAN isolation from Ocotea fasciculata, and (ii) an in vitro cytotoxicity study to estimate, for the first time, the LD50 values of th
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Book chapters on the topic "Epi-isomers"

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Taber, Douglass F. "Progress in Alkene and Alkyne Metathesis: (+)-5- epi -Citreoviral(Funk) and ( ± )-Poitediol (Vanderwal)." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0032.

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The Fischer carbene 2 at 0.5 mol % gives only 12% conversion of 1 to 4 after 18 hours. Debra J. Wallace of Merck Process showed (Adv. Synth. Cat. 2009, 351, 2277) that addition of a catalytic amount of the inexpensive 3 activated 2 , leading to 95% conversion of 1 to 4 after 18 hours. Shazia Zaman of the University of Canterbury and Andrew D. Abell of the University of Adelaide found (Tetrahedron Lett. 2009, 50, 5340) that the catalyst 5, incorporating a polyethylene glycol (PEG) chain, was readily recovered in active form by precipitation and could be reused at least fi ve times. Zhu Yinghuai
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