Academic literature on the topic 'Bibenzyls'

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Journal articles on the topic "Bibenzyls"

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Xiong, Rui-Lin, Jiao-Zhen Zhang, Xin-Yan Liu, et al. "Identification and Characterization of Two Bibenzyl Glycosyltransferases from the Liverwort Marchantia polymorpha." Antioxidants 11, no. 4 (2022): 735. http://dx.doi.org/10.3390/antiox11040735.

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Liverworts are rich in bibenzyls and related O-glycosides, which show antioxidant activity. However, glycosyltransferases that catalyze the glycosylation of bibenzyls have not yet been characterized. Here, we identified two bibenzyl UDP-glucosyltransferases named MpUGT737B1 and MpUGT741A1 from the model liverwort Marchantia polymorpha. The in vitro enzymatic assay revealed that MpUGT741A1 specifically accepted the bibenzyl lunularin as substrate. MpUGT737B1 could accept bibenzyls, dihydrochalcone and phenylpropanoids as substrates, and could convert phloretin to phloretin-4-O-glucoside and phl
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Rukoyatkina, Natalia, Tatyana Sokolova, Nikita Pronin, Andrei Whaley, Anastasiia O. Whaley, and Stepan Gambaryan. "Death of Leukemia Cells and Platelets Induced by 3,3′-Dihydroxy-4,5-Dimethoxybibenzyl Is Mediated by p38 Mitogen-Activated Protein Kinase Pathway." Molecules 30, no. 14 (2025): 2965. https://doi.org/10.3390/molecules30142965.

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Bibenzyls are now recognized as compounds for use in cancer therapy, and many molecules from the bibenzyl group have shown promising anticancer activity; therefore, the characterization of new bibenzyls with strong biological activity is important for developing new anticancer drugs. In this study, we compared the effects of three bibenzyls (3,3′-dihydroxy-4,5-dimethoxybibenzyl, 3,5-dihydroxy-4-methoxybibenzyl and 3,5,3′-trihydroxy-4-methoxybibenzyl) isolated from Empetrum nigrum and erianin on platelets and the MOLT-3 T-lymphoblast cell line. Among the studied bibenzyls, 3,3′-dihydroxy-4,5-di
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Chen, Yan, Yu Wang, Chongjun Liang, et al. "Characterization of the Key Bibenzyl Synthase in Dendrobium sinense." International Journal of Molecular Sciences 23, no. 12 (2022): 6780. http://dx.doi.org/10.3390/ijms23126780.

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Dendrobium sinense, an endemic medicinal herb in Hainan Island, is rich in bibenzyls. However, the key rate-limited enzyme involved in bibenzyl biosynthesis has yet to be identified in D. sinense. In this study, to explore whether there is a significant difference between the D. sinense tissues, the total contents of bibenzyls were determined in roots, pseudobulbs, and leaves. The results indicated that roots had higher bibenzyl content than pseudobulbs and leaves. Subsequently, transcriptomic sequencings were conducted to excavate the genes encoding type III polyketide synthase (PKS). A total
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Chiummiento, Lucia, Rosarita D’Orsi, Ilaria Caivano, Maria Funicello, and Paolo Lupattelli. "Structural Insights into the TES/TFA Reduction of Differently Substituted Benzofurans: Dihydrobenzofurans or Bibenzyls?" Synlett 32, no. 01 (2020): 63–68. http://dx.doi.org/10.1055/s-0040-1705949.

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AbstractVarious polysubstituted benzofurans were reduced by using triethylsilane in trifluoracetic acid. 2,3-Dihydrobenzofurans or bibenzyl compounds were obtained in high yields, depending on the nature of the substituents at C2 and on the benzene ring of the core structure. A p-anisole substituent at C2 of benzofurans always led to the corresponding bibenzyls.
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Imura, Yuka, Kenichi Harada, Miwa Kubo, and Yoshiyasu Fukuyama. "Three New Bibenzyls from the Twigs of Smilax longifolia." Natural Product Communications 12, no. 12 (2017): 1934578X1701201. http://dx.doi.org/10.1177/1934578x1701201216.

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Three new bibenzyl compounds, 1-3, were isolated along with the previously known bibenzyls 4-6, one diarylpropanoid 7, and three diarylheptanoids 8-10 from the twigs of Smilax longifolia. The structures of the new compounds were elucidated by analyzing their spectroscopic data and comparing them with those of known compounds. Diarylheptanoid 9 exhibited potent lethality in the brine shrimp lethality test (BST).
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Nam, Bomi, Ah-Reum Han, and Ik-Soo Lee. "Microbial Glycosylation of Phenanthrene and Bibenzyls by Mucor hiemalis." Natural Product Communications 15, no. 11 (2020): 1934578X2097450. http://dx.doi.org/10.1177/1934578x20974508.

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Microbial transformation of denthyrsinin (1), gigantol (2), and batatasin III (3), the major constituents of Dendrobium species (Orchidaceae), was performed using the filamentous fungus Mucor hiemalis KCTC 26779. Three glycosylated metabolites were obtained in the biotransformation of 1-3, and their structures were identified as denthyrsinin-6- O-β-d-glucoside (4), gigantol-5- O-β-d-glucoside (5), and batatasin III-3- O-β-d-glucoside (6) by analyzing 1-dimensional and 2-dimensional-nuclear magnetic resonance spectra, as well as high-resolution electrospray ionization mass spectral data. Among
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Zhang, Jiao-Zhen, Chan Wang, Ting-Ting Zhu, et al. "Spatial Distribution, Antioxidant Capacity, and Spore Germination-Promoting Effect of Bibenzyls from Marchantia polymorpha." Antioxidants 11, no. 11 (2022): 2157. http://dx.doi.org/10.3390/antiox11112157.

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Liverworts, considered to be the first plant type to successfully make the transition from water to land, can resist different oxidative stress. As characteristic constituents of liverworts, the bibenzyls are efficient antioxidants. In this study, spatial distributions of the bibenzyls within Marchantia polymorpha L., the model species of liverworts, were mapped using airflow-assisted desorption electrospray ionization imaging mass spectrometry. Bibenzyls were found to largely exist in the female receptacle of M. polymorpha, where lunularic acid was found to focus in the central region and bis
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Asakawa, Yoshinori, Fumihiro Nagashima, and Agnieszka Ludwiczuk. "Distribution of Bibenzyls, Prenyl Bibenzyls, Bis-bibenzyls, and Terpenoids in the Liverwort Genus Radula." Journal of Natural Products 83, no. 3 (2020): 756–69. http://dx.doi.org/10.1021/acs.jnatprod.9b01132.

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Chaofeng, Zhang, Wang Min, Lin Ping, Zhang Mian, Wang Zhengtao, and Xu Luoshan. "A new bibenzyl compound from Dendrobium gratiosissmum." Journal of Indian Chemical society Vol. 84, Jul 2007 (2007): 714–16. https://doi.org/10.5281/zenodo.5824487.

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Department of Pharmacognosy, China Pharmaceutical University, Nainjing, Jiangsn 210038, P. R. China <em>E-mail </em>: njchaofeng@126.cqm Fax : 86-25-85309639 <em>Manuscript received 9 November 2006, accepted 4 May 2007</em> A new bibenzyls compound, Isomoniliformine A, 1-{(7-hydroxy-5-methoxy-6-(18-(hydroxylmethyl)oxiranyl)- 16,18-dimethoxylphenoxy)-phenyl}-2-(11-methoxyphenyl)ethane, was isolated from stems of <em>Dendrobium gratiosissmum&nbsp;</em>Rchb. f. The structure of this unusual bibenzyl compound was determined by chemical and spectroscopic methods, particularly one- and two-dimension
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Takamiya, Tomoko, Manako Saito, Aoi Miyamoto, et al. "BBS Gene Expression and Its Diversity in the Genus Dendrobium." Diversity 16, no. 6 (2024): 337. http://dx.doi.org/10.3390/d16060337.

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Dendrobium officinale Kimura &amp; Migo in the genus Dendrobium of Orchidaceae is an important medicinal plant that produces various bibenzyl and phenanthrene derivatives. In some orchids, these derivatives have been reported to increase with fungal infection. Bibenzyl biosynthesis is regulated by bibenzyl synthase (BBS). Although six genes of the BBS family have been registered from D. officinale, their gene regulation mechanisms are unclear. The infection of Dendrobium with mycorrhizal fungi also reportedly increases the expression of genes involved in biosynthesis; however, the effect of my
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Dissertations / Theses on the topic "Bibenzyls"

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Cusati, Giuseppe. "La catalyse hétérogène au palladium en chimie fine : une étude sur la synthèse " one-pot " de stilbènes et bibenzyles : application à la synthèse de styrènes et aryl-indoles." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00876267.

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Les synthèses " one pot " multi-étapes efficaces et éco-compatibles ont été envisagées pour la synthèse de molécules potentiellement bioactives tels que les systèmes bis(bibenzyliques) et leurs précurseurs stilbéniques ou bibenzyliques par catalyse hétérogène au palladium. Une synthèse " one-pot " impliquant une réaction de couplage de Heck suivie d'une hydrogénation des stilbènes ainsi formés a été mise au point en présence de Pd/C. Cette stratégie c'est révélée être limitée lors de l'application à des substrats désactivés et stériquement encombrées. Couplée au manque de disponibilité commerc
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Carvalho, Jarbas Lima de. "Chemical and biological study of Bauhinia pulchella Benth." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13413.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>This present work reports the chemical and biological analysis of the stem and leaves from Bauhinia pulchella. In this study, the ethanol extract from stems was obtained by maceration, subjected to chromatographic fractionation, leading to isolation of three flavonoids: (+)-3â,4â-dihydroxyphenyl-chroman-7-ol (BP-2), (-)-fisetinidol (BP-3) and (+)-epicatechin (BP-4); a mixture of triterpenes taraxerone and &#946;-amyrenone (BP-1); a mixture of steroids sitosterol and stigmasterol (BP-5); and a bibenzyl named 2-hydroxy-3â,5â-dimeth
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Metoyer, Benjamin. "Contribution à l'étude de la chimiodiversité des hépatiques de Nouvelle-Calédonie." Thesis, Nouvelle Calédonie, 2017. http://www.theses.fr/2017NCAL0002/document.

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L’étude phytochimique des hépatiques de la Nouvelle-Calédonie a été réalisée sur 34 espèces d’hépatique (dont 14 endémiques) appartenant à six familles (Plagiochilaceae, Lophocoleaceae, Lepidoziaceae, Porellaceae, Lejeuneaceae et Frullaniaceae). La composition chimique, notamment en constituants volatils principalement sesquiterpéniques, de ces espèces a pu être établie pour la première fois pour la majorité des espèces étudiées, et il s’agit de la première étude phytochimique réalisée sur les genres Chiastocaulon et Acromastigum. Environ 260 constituants ont pu être déterminés pour ces espèce
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Sousa, Lôncio Mesquita de. "Estudo químico e avaliação biológica de Phanera glabra (Jacq.) Vaz & Bauhinia ungulata L. (FABACEAE)." reponame:Repositório Institucional da UFC, 2016. http://www.repositorio.ufc.br/handle/riufc/21448.

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SOUSA, Leôncio Mesquita de. Estudo químico e avaliação biológica de Phanera glabra (Jacq.) Vaz & Bauhinia ungulata L. (FABACEAE). 2016. 263 f. Tese (Doutorado em Química)-Universidade Federal do Ceará, Fortaleza, 2016.<br>Submitted by Aline Mendes (alinemendes.ufc@gmail.com) on 2016-12-21T20:43:17Z No. of bitstreams: 1 2016_tese_lmsousa.pdf: 24821219 bytes, checksum: 3899ad5625838e46813ab9727472fabc (MD5)<br>Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2016-12-27T16:16:42Z (GMT) No. of bitstreams: 1 2016_tese_lmsousa.pdf: 24821219 bytes, checksum: 3899ad5625838e46813ab97274
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Sousa, Leôncio Mesquita de. "Estudo químico e avaliação biológica de Phanera glabra (Jacq.) Vaz & Bauhinia ungulata L. (FABACEAE)." reponame:Repositório Institucional da UFC, 2016. http://www.repositorio.ufc.br/handle/riufc/21821.

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SOUSA, Leôncio Mesquita de. Estudo Químico e Avaliação Biológica de Phanera glabra (Jacq.) Vaz & Bauhinia ungulata L. (FABACEAE). 2016. 263 f. Tese (Doutorado em Química)-Universidade Federal do Ceará, Fortaleza, 2016.<br>Submitted by Aline Mendes (alinemendes.ufc@gmail.com) on 2017-01-24T21:20:20Z No. of bitstreams: 1 2016_tese_lmsousa.pdf: 24821219 bytes, checksum: e022dc323cde53950dcc209fb460ecf4 (MD5)<br>Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2017-01-26T20:20:52Z (GMT) No. of bitstreams: 1 2016_tese_lmsousa.pdf: 24821219 bytes, checksum: e022dc323cde53950dcc209fb4
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Von, Stein Ferdinand. "A chemical investigation of Dendrobium discolor and Senecio madagascariensis." Thesis, Queensland University of Technology, 2002.

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Book chapters on the topic "Bibenzyls"

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Orsini, Fulvia, and Luisella Verotta. "Stilbenes and Bibenzyls with Potential Anticancer or Chemopreventive Activity." In Advances in Nutrition and Cancer 2. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4757-3230-6_15.

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"3,5-Dihydroxy-4-prenyl-bibenzyl." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0535-1_1203.

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Song, Chunshan, Eckhardt Schmidt, and Harold H. Schobert. "Activity and selectivity of Fe catalysts from organometallic and inorganic precursors for hydrocracking of 4-(l-Naphthylmethyl) bibenzyl." In Coal Science, Proceedings of the Eighth International Conference on Coal Science. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-9449(06)80048-0.

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