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Journal articles on the topic 'Dihydrophenanthrene'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Pettit, George R., Sheo Bux Singh, Margaret L. Niven, and Jean M. Schmidt. "Cell growth inhibitory dihydrophenanthrene and phenanthrene constituents of the african tree Combretum caffrum." Canadian Journal of Chemistry 66, no. 3 (1988): 406–13. http://dx.doi.org/10.1139/v88-071.

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Combretum caffrum, a tree in the family Combretaceae, has been found to contain three 9,10-dihydrophenanthrenes (6,7-dihydroxy-2,3,4-trimethoxy; 7-hydroxy-2,3,4,6-tetramethoxy; and 2,7-dihydroxy-3,4,6-trimethoxy) that inhibit (ED50 2.2, 2.8, and 2.6 μg/mL) growth of the murine lymphocytic leukemia cell line. One phenanthrene (7-hydroxy-2,3,4,6-tetramethoxy) was also isolated with similar (ED50 2.0 μg/mL) activity. Structures for each of these substances, including a dihydrophenanthrene (2-hydroxy-3,4,6,7-tetramethoxy-9,10-dihydrophenanthrene), were determined by detailed high resolution nuclea

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2

Butts, CP, L. Eberson, KL Fulton, MP Hartshorn, and WT Robinson. "Photochemical Nitration by Tetranitromethane. XXXII. Adduct Formation in the Photochemical Reaction of Phenanthrene and Tetranitromethane." Australian Journal of Chemistry 49, no. 4 (1996): 469. http://dx.doi.org/10.1071/ch9960469.

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Photolysis of the phenanthrene/tetranitromethane charge-transfer complex yields the triad of phenanthrene radical cation, nitrogen dioxide, and trinitromethanide ion. Recombination of this triad in dichloromethane at 20° gives 9-nitrophenanthrene (1), trans-10-trinitromethyl-9,10-dihydrophenanthren-9-yl nitrate (2a), trans-9-nitro-10-trinitromethyl-9,10-dihydrophenanthrene (2b), and trans-10-trinitromethyl-9,10-dihydrophenanthren-9-ol (2c). Adduct formation is partially suppressed when trifluoroacetic acid (0.7 M) is added to the dichloromethane solvent at 20°, the major product identified bei

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3

Bisoli, Eder, Talita Vilalva Freire, Nídia Cristiane Yoshida, et al. "Cytotoxic Phenanthrene, Dihydrophenanthrene, and Dihydrostilbene Derivatives and Other Aromatic Compounds from Combretum laxum." Molecules 25, no. 14 (2020): 3154. http://dx.doi.org/10.3390/molecules25143154.

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The chemical investigation of the roots and stems of Combretum laxum yielded a new dihydrostilbene derivative, 4′-hydroxy-3,3′,4-trimethoxy-5-(3,4,5-trimethoxyphenoxy)-bibenzyl (1), two phenanthrenes (2–3), and three dihydrophenanthrenes (4–6), along with one lignan, three triterpenoids, one aurone, one flavone, one naphthoquinone, and two benzoic acid derivatives. Their structures were determined by 1D and 2D nuclear magnetic resonance (NMR) spectroscopic techniques and/or mass spectrometry data. The occurrence of dihydrostilbenoid, phenanthrene and dihydrophenanthrene derivatives is unpreced

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4

Delle Monache, Franco, Giuliano Delle Monache, Julianna F. Cavalcanti, and Rogerio M. Pinheiro. "An unexpected dihydrophenanthrene from." Tetrahedron Letters 28, no. 5 (1987): 563–66. http://dx.doi.org/10.1016/s0040-4039(00)95782-4.

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5

Jones, P. G. "9,10-Dihydrophenanthrene-4,5-dimethanol." Acta Crystallographica Section C Crystal Structure Communications 48, no. 12 (1992): 2245–47. http://dx.doi.org/10.1107/s0108270192003962.

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6

Shi, Yong-gang, Soren K. Mellerup, Kang Yuan, et al. "Stabilising fleeting intermediates of stilbene photocyclization with amino-borane functionalisation: the rare isolation of persistent dihydrophenanthrenes and their [1,5] H-shift isomers." Chemical Science 9, no. 15 (2018): 3844–55. http://dx.doi.org/10.1039/c8sc00560e.

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7

Greca, Marina Della, Antonio Fiorentino, Antonio Molinaro, Pietro Monaco, and Lucio Previtera. "9,10-Dihydrophenanthrene Glucosides fromJuncus effusus." Natural Product Letters 6, no. 2 (1995): 111–17. http://dx.doi.org/10.1080/10575639508044098.

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8

Dijoux-Franca, M. Geneviève, Diderot Noungoué Tchamo, Bruno Cherel, Max Cussac, Etienne Tsamo, and Anne-M. Mariotte. "New Dihydrophenanthrene and Phenyldihydroisocoumarin Constituents ofTremaorientalis." Journal of Natural Products 64, no. 6 (2001): 832–35. http://dx.doi.org/10.1021/np000275s.

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9

Lewis, Frederick D., Todd L. Kurth, and Rajdeep S. Kalgutkar. "A push–pull 4a,4b-dihydrophenanthrene." Chemical Communications, no. 15 (2001): 1372–73. http://dx.doi.org/10.1039/b104510p.

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10

Sekine, Toshikazu, Nobuyaki Fukasawa, Isamu Murakoshi, and Nijsiri Ruangrungsi. "A 9,10-dihydrophenanthrene from Asparagus racemosus." Phytochemistry 44, no. 4 (1997): 763–64. http://dx.doi.org/10.1016/s0031-9422(96)00579-1.

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11

Aquino, Rita, Isabella Behar, Francesco de Simone, and Cosimo Pizza. "Natural Dihydrophenanthrene Derivatives from Tamus communis." Journal of Natural Products 48, no. 5 (1985): 811–13. http://dx.doi.org/10.1021/np50041a017.

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12

Eir�n, Ana, Franco Fern�ndez, Generosa G�mez, Carmen L�pez, Ana Santos, and Gonzalo Rodr�guez. "Nitration of a Crude 9,10-Dihydrophenanthrene." Journal f�r Praktische Chemie/Chemiker-Zeitung 336, no. 1 (1994): 63–66. http://dx.doi.org/10.1002/prac.19943360112.

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13

Sakano, Yuto, Ryo Katoono, Kenshu Fujiwara, and Takanori Suzuki. "Two-way chromic interconversion of the 2,2′-biphenol-6,6′-diyl dication with 5H,10H-dioxapyrene or 9H,10H-4,5-dihydroxyphenanthrene." Chemical Communications 51, no. 76 (2015): 14303–5. http://dx.doi.org/10.1039/c5cc06338h.

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Two-proton or two-electron transfer of the title biphenolic dication proceeds nearly simultaneously to induce 2,6′/2′,6- or 6,6′-bond formation to give dioxapyrene or dihydrophenanthrene derivatives, respectively, with vivid changes in color.

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14

P., L. Majumder, Rahaman Burhanur, Roychowdhury Mausumi, and P. Dhara K. "Monomeric and dimeric stilbenoids from the orchid Dendrobium amplum." Journal of Indian Chemical Society Vol. 85, Feb 2008 (2008): 192–99. https://doi.org/10.5281/zenodo.5808843.

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Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India <em>E-mail :</em> priyalalm@hotmail.com <em>Manuscript received 26 November 2007, accepted I 5 December 2007</em> Amplumthrin, a new dimeric 9,10-dihydrophenanthrene derivative, was isolated from the orchid <em>Dendrobium amplum</em> which also afforded the known 9,10-dihydrophenanthrene dimer flavanthrin and the monomeric stilbenoids gigantol, batatasin Ill, its 3'-O-methyl ether and 3,3'-O,O-dimethyl ether, 2,7-dihydroxy-3,4,6-trimethoxyphenanthrene and its 9,10-dihydro d

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15

Woning, Jan, Petra C. M. Weisenborn, Cyril A. G. O. Varma, and Wim H. Laarhoven. "Mechanism of the amine-promoted photochemical 1,3-H shift of 1,2- and 3,4-dihydrophenanthrene into 1,4-dihydrophenanthrene." Journal of Photochemistry and Photobiology A: Chemistry 55, no. 2 (1990): 169–86. http://dx.doi.org/10.1016/1010-6030(90)80029-w.

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16

Platella, Chiara, Andrea Criscuolo, Claudia Riccardi, et al. "Exploring the Binding of Natural Compounds to Cancer-Related G-Quadruplex Structures: From 9,10-Dihydrophenanthrenes to Their Dimeric and Glucoside Derivatives." International Journal of Molecular Sciences 24, no. 9 (2023): 7765. http://dx.doi.org/10.3390/ijms24097765.

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In-depth studies on the interaction of natural compounds with cancer-related G-quadruplex structures have been undertaken only recently, despite their high potential as anticancer agents, especially due to their well-known and various bioactivities. In this frame, aiming at expanding the repertoire of natural compounds able to selectively recognize G-quadruplexes, and particularly focusing on phenanthrenoids, a mini-library including dimeric (1–3) and glucoside (4–5) analogues of 9,10-dihydrophenanthrenes, a related tetrahydropyrene glucoside (6) along with 9,10-dihydrophenanthrene 7 were inve

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17

Greca, M. Delia, A. Fiorentino, L. Mangoni, A. Molinaro, P. Monaco, and L. Previtera. "9,10-dihydrophenanthrene metabolites from Juncus effusus L." Tetrahedron Letters 33, no. 36 (1992): 5257–60. http://dx.doi.org/10.1016/s0040-4039(00)79148-9.

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18

Zhao, Ningdong, Guangyu Yang, Yan Zhang, Lijun Chen, and Yegao Chen. "A new 9,10-dihydrophenanthrene from Dendrobium moniliforme." Natural Product Research 30, no. 2 (2015): 174–79. http://dx.doi.org/10.1080/14786419.2015.1046379.

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19

Li, Wen-Kui, Jing-Qi Pan, Mu-Jian Lü, Ru-Yi Zhang, and Pei-Gen Xiao. "A 9,10-dihydrophenanthrene derivate from Epimedium koreanum." Phytochemistry 39, no. 1 (1995): 231–33. http://dx.doi.org/10.1016/0031-9422(94)00926-k.

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20

Billmers, R., R. L. Brown, and S. E. Stein. "Hydrogen transfer from 9,10-dihydrophenanthrene to anthracene." International Journal of Chemical Kinetics 21, no. 6 (1989): 375–86. http://dx.doi.org/10.1002/kin.550210602.

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21

Tsai, Cheng-Ming, Chun-Yu Chen, Phung Kim Le, Yi-Hsuan Wang, and Sio-Hong Lam. "Bis(4-glycosyloxybenzyl) 2-isobutyltartrate and dihydrophenanthrene derivatives from the pseudobulbs of Pholidota chinensis and their anti-inflammatory activity." Phytochemistry 206 (February 28, 2023): 1–10. https://doi.org/10.1016/j.phytochem.2022.113528.

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Tsai, Cheng-Ming, Chen, Chun-Yu, Le, Phung Kim, Wang, Yi-Hsuan, Lam, Sio-Hong (2023): Bis(4-glycosyloxybenzyl) 2-isobutyltartrate and dihydrophenanthrene derivatives from the pseudobulbs of Pholidota chinensis and their anti-inflammatory activity. Phytochemistry (113528) 206: 1-10, DOI: 10.1016/j.phytochem.2022.113528, URL: http://dx.doi.org/10.1016/j.phytochem.2022.113528

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22

Sun, Mo-Han, Xian-Jie Ma, Si-Yuan Shao, et al. "Phenanthrene, 9,10-dihydrophenanthrene and bibenzyl enantiomers from Bletilla striata with their antineuroinflammatory and cytotoxic activities." Phytochemistry 182 (February 28, 2021): 1–14. https://doi.org/10.1016/j.phytochem.2020.112609.

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Sun, Mo-Han, Ma, Xian-Jie, Shao, Si-Yuan, Han, Shao-Wei, Jiang, Jian-Wei, Zhang, Jian-Jun, Li, Shuai (2021): Phenanthrene, 9,10-dihydrophenanthrene and bibenzyl enantiomers from Bletilla striata with their antineuroinflammatory and cytotoxic activities. Phytochemistry (112609) 182: 1-14, DOI: 10.1016/j.phytochem.2020.112609, URL: http://dx.doi.org/10.1016/j.phytochem.2020.112609

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23

Jimoh, Tajudeen O., Bruno Cesar Costa, Chaisak Chansriniyom, et al. "Three New Dihydrophenanthrene Derivatives from Cymbidium ensifolium and Their Cytotoxicity against Cancer Cells." Molecules 27, no. 7 (2022): 2222. http://dx.doi.org/10.3390/molecules27072222.

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From the aerial parts of Cymbidium ensifolium, three new dihydrophenanthrene derivatives, namely, cymensifins A, B, and C (1–3) were isolated, together with two known compounds, cypripedin (4) and gigantol (5). Their structures were elucidated by analysis of their spectroscopic data. The anticancer potential against various types of human cancer cells, including lung, breast, and colon cancers as well as toxicity to normal dermal papilla cells were assessed via cell viability and nuclear staining assays. Despite lower cytotoxicity in lung cancer H460 cells, the higher % apoptosis and lower % c

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24

Labra, M., Fabio T. Di, F. Grassi, et al. "AFLP analysis as biomarker of exposure to organic and inorganic genotoxic substances in plants." Chemosphere 52, no. 7 (2003): 1183–88. https://doi.org/10.5281/zenodo.13512952.

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(Uploaded by Plazi for the Bat Literature Project) In recent years several plant species have been in use as bioindicators and several tests have been developed to evaluate the toxicity of environmental pollutants in vegetal organisms. In the present paper Arabidopsis thaliana (L.) Heynh. (ecotype Wassilewskija) was used as bioindicators of two genotoxic substances: potassium dichromate and dihydrophenanthrene. Inhibition of seed germination was observed with both pollutants. AFLP analysis (i) indicated that both substances are genotoxic, (ii) showed that dihydrophenanthrene induces DNA change

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25

Labra, M., Fabio T. Di, F. Grassi, et al. "AFLP analysis as biomarker of exposure to organic and inorganic genotoxic substances in plants." Chemosphere 52, no. 7 (2003): 1183–88. https://doi.org/10.5281/zenodo.13512952.

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(Uploaded by Plazi for the Bat Literature Project) In recent years several plant species have been in use as bioindicators and several tests have been developed to evaluate the toxicity of environmental pollutants in vegetal organisms. In the present paper Arabidopsis thaliana (L.) Heynh. (ecotype Wassilewskija) was used as bioindicators of two genotoxic substances: potassium dichromate and dihydrophenanthrene. Inhibition of seed germination was observed with both pollutants. AFLP analysis (i) indicated that both substances are genotoxic, (ii) showed that dihydrophenanthrene induces DNA change

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26

Labra, M., Fabio T. Di, F. Grassi, et al. "AFLP analysis as biomarker of exposure to organic and inorganic genotoxic substances in plants." Chemosphere 52, no. 7 (2003): 1183–88. https://doi.org/10.5281/zenodo.13512952.

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(Uploaded by Plazi for the Bat Literature Project) In recent years several plant species have been in use as bioindicators and several tests have been developed to evaluate the toxicity of environmental pollutants in vegetal organisms. In the present paper Arabidopsis thaliana (L.) Heynh. (ecotype Wassilewskija) was used as bioindicators of two genotoxic substances: potassium dichromate and dihydrophenanthrene. Inhibition of seed germination was observed with both pollutants. AFLP analysis (i) indicated that both substances are genotoxic, (ii) showed that dihydrophenanthrene induces DNA change

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27

Labra, M., Fabio T. Di, F. Grassi, et al. "AFLP analysis as biomarker of exposure to organic and inorganic genotoxic substances in plants." Chemosphere 52, no. 7 (2003): 1183–88. https://doi.org/10.5281/zenodo.13512952.

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(Uploaded by Plazi for the Bat Literature Project) In recent years several plant species have been in use as bioindicators and several tests have been developed to evaluate the toxicity of environmental pollutants in vegetal organisms. In the present paper Arabidopsis thaliana (L.) Heynh. (ecotype Wassilewskija) was used as bioindicators of two genotoxic substances: potassium dichromate and dihydrophenanthrene. Inhibition of seed germination was observed with both pollutants. AFLP analysis (i) indicated that both substances are genotoxic, (ii) showed that dihydrophenanthrene induces DNA change

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28

Hewgill, FR, and MC Pass. "On the Synthesis of 2,12-Dimethoxy-6,7,8,9-tetrahydro-5H-dibenz[d,f]azonine-3,11-diol and the Other Bridged Biphenyldiols and the E.S.R. of Their Oxidation Products in Relation to the Biosynthesis of Erythrina Alkaloids." Australian Journal of Chemistry 38, no. 4 (1985): 537. http://dx.doi.org/10.1071/ch9850537.

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An improved synthesis in described for the dibenzazonine precursor of erysodienone . Other biphenyl-4,4′-diols, bridged by two, three and five atoms, were also prepared. E.s.r. examination of the oxidation of these compounds produced spectra of the 9,10-dihydrophenanthrene-4,4′- semiquinone system, hitherto unrecorded, but semiquinone spectra could not be obtained from the other diols.

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29

VAN BELZEN, R., R. A. KLEIN, W. J. J. SMEETS, A. L. SPEK, R. BENEDIX, and C. J. ELSEVIER. "ChemInform Abstract: Synthesis and Characterization of 9,10-Bis(arylimino)-9,10- dihydrophenanthrenes, the Structure of (Z,Z)-9,10-Bis(phenylimino)-9, 10-dihydrophenanthrene and PdCl2-((E,E)-9,10-bis(phenylimino)-9,10- dihydrophenanthrene) in the Solid St." ChemInform 27, no. 39 (2010): no. http://dx.doi.org/10.1002/chin.199639128.

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30

van Belzen, Ruud, René A. Klein, Wilberth J. J. Smeets, Anthony L. Spek, Roland Benedix, and Cornells J. Elsevier. "Synthesis and characterization of 9,10-bis(arylimino)-9,10-dihydrophenanthrenes, the structure of (Z,Z )-9,10-bis(phenylimino)-9,10-dihydrophenanthrene and PdCl2 -[(E,E )-9,10-bis(phenylimino)-9,10-dihydrophenanthrene] in the solid state and in solution." Recueil des Travaux Chimiques des Pays-Bas 115, no. 5 (1996): 275–85. http://dx.doi.org/10.1002/recl.19961150504.

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31

Lin, Shuang-Zheng, and Tian-Pa You. "Convenient Preparation of Chiraltrans-9,10-Dihydrophenanthrene-9,10-diamine." Synthetic Communications 39, no. 22 (2009): 4133–38. http://dx.doi.org/10.1080/00397910902898544.

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32

Dou, Yusheng, and Roland E. Allen. "Dynamics of the photocyclization ofcis-stilbene to dihydrophenanthrene." Journal of Modern Optics 51, no. 16-18 (2004): 2485–91. http://dx.doi.org/10.1080/09500340408231807.

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33

Sarkhel, S., A. Goel, V. J. Ram, S. Chaudhuri, and P. R. Maulik. "Unusual Substitution of –SCH3by –OH in 9,10-Dihydrophenanthrene." Acta Crystallographica Section C Crystal Structure Communications 53, no. 11 (1997): 1713–14. http://dx.doi.org/10.1107/s010827019700869x.

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34

Biswas, Maya, U. K. Som, P. K. Ghosh, C. P. Dutta, and A. Banerji. "Prazerol, a new 9,10-dihydrophenanthrene derivative isolated from." Tetrahedron 44, no. 15 (1988): 4871–76. http://dx.doi.org/10.1016/s0040-4020(01)86191-3.

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35

Ye, Qinghua, Yuan Mei, Peiming Yang, Liang Cheng, and Deyun Kong. "A New 9,10-Dihydrophenanthrene Glycoside from Dendrobium primulinum." Chemistry of Natural Compounds 52, no. 3 (2016): 381–83. http://dx.doi.org/10.1007/s10600-016-1653-0.

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36

Al-Youbi, Abdulrahman O., Abdullah M. Asiri, Hassan M. Faidallah, Khalid A. Alamry, and Seik Weng Ng. "3-Amino-1-methyl-9,10-dihydrophenanthrene-2,4-dicarbonitrile." Acta Crystallographica Section E Structure Reports Online 67, no. 10 (2011): o2569. http://dx.doi.org/10.1107/s1600536811035008.

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37

Chakraborty, Tapas, and Mihir Chowdhury. "Fluorescence excitation spectrum of jet-cooled 9,10-dihydrophenanthrene." Chemical Physics Letters 177, no. 2 (1991): 223–28. http://dx.doi.org/10.1016/0009-2614(91)90072-h.

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38

SEKINE, T., N. FUKASAWA, I. MURAKOSHI, and N. RUANGRUNGSI. "ChemInform Abstract: A 9,10-Dihydrophenanthrene from Asparagus racemosus." ChemInform 28, no. 19 (2010): no. http://dx.doi.org/10.1002/chin.199719243.

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39

Lewis, Frederick D., Todd L. Kurth, and Rajdeep S. Kalgutkar. "ChemInform Abstract: A Push-Pull 4a,4b-Dihydrophenanthrene." ChemInform 32, no. 44 (2010): no. http://dx.doi.org/10.1002/chin.200144113.

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40

Yamamoto, Takakazu, Ryouichi Tokimitsu, Takahiro Asao та ін. "π-Conjugated Polymers Consisting of 9,10-Dihydrophenanthrene Units". Macromolecular Chemistry and Physics 212, № 22 (2011): 2406–16. http://dx.doi.org/10.1002/macp.201100310.

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41

Wang, Yue-Hu. "Traditional Uses and Pharmacologically Active Constituents of Dendrobium Plants for Dermatological Disorders: A Review." Natural Products and Bioprospecting 11, no. 5 (2021): 465–87. http://dx.doi.org/10.1007/s13659-021-00305-0.

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AbstractDendrobium Sw. is one of the largest genera in the orchidaceous family and includes 900–2000 species. Among them, more than 80 Dendrobium species have been reported in China. However, there are only six Dendrobium species, namely, D. bigibbum var. superbum (syn. D. phalaenopsis), D. chrysanthum, D. fimbriatum, D. loddigesii, D. nobile, and D. officinale (syn. D. candidum), listed in the New Inventory of Existing Cosmetic Ingredients in China Launched. Artificial planting of Dendrobium species has been a great success in China. To better utilize Dendrobium resources for medicinal and co

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42

Mittraphab, Arparporn, Chawanphat Muangnoi, Kittisak Likhitwitayawuid, Pornchai Rojsitthisak, and Boonchoo Sritularak. "A New Bibenzyl-phenanthrene Derivative from Dendrobium signatum and its Cytotoxic Activity." Natural Product Communications 11, no. 5 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100526.

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From the whole plant of Dendrobium signatum, a new bibenzyl-dihydrophenanthrene derivative, named dendrosignatol was isolated, together with the known compounds 3,4-dihydroxy-3,4′-dimethoxybibenzyl, dendrocandin B, dendrocandin I and dendrofalconerol A. The structure of the new compound was elucidated through analysis of its spectroscopic and mass spectrometric data. All of the isolates showed appreciable cytotoxic activity against three human cancer cell lines, including MDA-231, HepG2 and HT-29 cells.

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43

Shi, Lei, Jiawei Zhu, Biqiong Hong, and Zhenhua Gu. "A Chiral Relay Race: Stereoselective Synthesis of Axially Chiral Biaryl Diketones through Ring-Opening of Optical Dihydrophenan-threne-9,10-diols." Molecules 28, no. 16 (2023): 5956. http://dx.doi.org/10.3390/molecules28165956.

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We report herein a point-to-axial chirality transfer reaction of optical dihydrophenanthrene-9,10-diols for the synthesis of axially chiral diketones. Two sets of conditions, namely a basic tBuOK/air atmosphere and an acidic NaClO/n-Bu4NHSO4, were developed to oxidatively cleave the C-C bond, resulting in the formation of axially chiral biaryl diketones. Finally, brief synthetic applications of the obtained chiral aryl diketones were demonstrated.

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44

Shubhendu, Dhara, Gorai Tumpa, Ahmed Atiur та K. Ray Jayanta. "Efficient synthesis of 9,10-dihydrophenanthrene and 6H-benzo[c]chromene derivatives via 6π electrocyclization". Journal of Indian Chemical Society Vol. 90, Oct 2013 (2013): 1675–79. https://doi.org/10.5281/zenodo.5791656.

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Department of Chemistry, Indian Institute of Technology, Kharagpur-721 302, Paschim Medinipore, West Bengal, India <em>E-mail </em>: jkray@chem.iitkgp.ernet.in <em>Manuscript received 07 June 2013, accepted 10 June 2013</em> An efficient and very simple method has been developed for the synthesis of 9,10-dihydrophenanthrene, 6<em>H-</em>benzo[c]chromene and various types of bicyclic benzenoid derivatives via 6π-electron electrocyclization reaction, followed by deacetylation.

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45

Hasan, Hayder T., and Enas J. Kadhim. "Phytochemical Investigation and Pharmacological Activity of Solidago canadensis L. against H1N1 Virus, involving the Separation and Identifi cation of Three New Compounds." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 13, no. 01 (2023): 180–92. http://dx.doi.org/10.25258/ijddt.13.1.28.

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Solidago canadensis L. (S. canadensis) is a member of the Asteraceae family, which comprises over a 100 species. The aerial portion of S. canadensis was defatted by maceration in hexane for 24 hours; the defatted plant components were extracted for 24 hours using a Soxhlet apparatus and aqueous ethanol 85%, and then fractionated by diff erent solvents. The ethyl acetate, and chloroform fractions were examined using liquid chromatography-mass spectroscopy (LC-MS). The examination revealed the presence of several phenolics, coumarins, and fl avonoid compounds. Preparative high-performance liquid

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46

Asiri, Abdullah M., Hassan M. Faidallah, Khalid A. Alamry, Seik Weng Ng, and Edward R. T. Tiekink. "3-Amino-1-(3,4-dimethoxyphenyl)-9,10-dihydrophenanthrene-2,4-dicarbonitrile." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1118—o1119. http://dx.doi.org/10.1107/s1600536812011129.

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In the title compound, C24H19N3O2, the partially saturated ring adopts a distorted half-chair conformation with the methylene-C atom closest to the aminobenzene ring lying 0.664 (3) Å out of the plane defined by the five remaining atoms (r.m.s. deviation = 0.1429 Å. The dihedral angle [32.01 (10)°] between the benzene rings on either side of this ring indicates a significant fold in this part of the molecule. The dimethoxy-substituted benzene ring is almost orthogonal to the benzene ring to which it is attached [dihedral angle = 72.03 (9)°]. The molecule has been observed previously as the maj

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Juneja, R. K., S. C. Sharma, and J. S. Tandon. "Two substituted bibenzyls and a dihydrophenanthrene from Cymbidium Aloifolium." Phytochemistry 26, no. 4 (1987): 1123–25. http://dx.doi.org/10.1016/s0031-9422(00)82362-6.

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Asiri, Abdullah M., Hassan M. Faidallah, Abdulrahman O. Al-Youbi, and Seik Weng Ng. "3-Amino-1-(4-bromophenyl)-9,10-dihydrophenanthrene-2,4-dicarbonitrile." Acta Crystallographica Section E Structure Reports Online 67, no. 10 (2011): o2745. http://dx.doi.org/10.1107/s1600536811038517.

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Yao, Sheng, Chun-Ping Tang, Yang Ye, et al. "Stereochemistry of atropisomeric 9,10-dihydrophenanthrene dimers from Pholidota chinensis." Tetrahedron: Asymmetry 19, no. 17 (2008): 2007–14. http://dx.doi.org/10.1016/j.tetasy.2008.08.013.

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Asiri, Abdullah M., Abdulrahman O. Al-Youbi, Hassan M. Faidallah, Seik Weng Ng, and Edward R. T. Tiekink. "3-Amino-1-(4-methoxyphenyl)-9,10-dihydrophenanthrene-2,4-dicarbonitrile." Acta Crystallographica Section E Structure Reports Online 67, no. 9 (2011): o2449. http://dx.doi.org/10.1107/s1600536811033617.

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