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Journal articles on the topic 'Benzofurannes'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Qiu, Renhua, Nobuaki Kambe, Zhi Tang, Zhou Tong, and Shuang-Feng Yin. "Recent Advances on Benzofuranones: Synthesis and Transformation via C–H Functionalization." Synthesis 53, no. 18 (2021): 3193–210. http://dx.doi.org/10.1055/a-1405-5761.

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AbstractThe benzofuranone structure is important in many fields, such as natural products, pharmaceuticals, building blocks, antioxidants, and dyes. The efficient synthesis and transformation of benzofuranones have attracted great attention in organic synthesis. They can be synthesized by the Friedel–Crafts reaction and intramolecular dehydration ring-closing and transition-metal-catalyzed reactions, among others. Their direct utilization in the preparation of other functional molecules further enhance their application. Due to their low pK a value and easy enolization, the transformation of b

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2

Binon, F., and C. Goldenberg. "Recherches dans la Serie des Benzofurannes. XIV. Spectres Infra-Rouges D'Alcoyl-2 Benzofurannes." Bulletin des Sociétés Chimiques Belges 74, no. 7-8 (2010): 306–14. http://dx.doi.org/10.1002/bscb.19650740703.

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3

Descamps, M., F. Binon, and J. Der Van Elst. "Recherches Dans la Série Des Benzofurannes IX. Sur la formation de chalcones à partir d'acétyl ou de formyl (-2 ou-3) benzofurannes." Bulletin des Sociétés Chimiques Belges 72, no. 7-8 (2010): 513–23. http://dx.doi.org/10.1002/bscb.19630720705.

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4

Goldenberg, C., and F. Blnon. "Recherches dans la Série des Benzofurannes. XVI. Spectres Infra-Rouges D'Esters de L'Acide Coumarylique." Bulletin des Sociétés Chimiques Belges 75, no. 3-4 (2010): 129–44. http://dx.doi.org/10.1002/bscb.19660750302.

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5

Zhang, Xiaojie, and Christopher M. Beaudry. "Regioselective Synthesis of Benzofuranones and Benzofurans." Journal of Organic Chemistry 86, no. 9 (2021): 6931–36. http://dx.doi.org/10.1021/acs.joc.1c00341.

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6

Descamps, M., F. Binon, and J. Der Van Elst. "Recherches Dans la Série Des Benzofurannes XI-Synthèse de pyrazoles et d'isoxazoles a partir de composés céto-3 benzofuranniques." Bulletin des Sociétés Chimiques Belges 73, no. 5-6 (2010): 459–82. http://dx.doi.org/10.1002/bscb.19640730515.

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7

Bera, Sourav Sekhar, Suvankar Debbarma, Sripati Jana, and Modhu Sudan Maji. "Cobalt(III)-Catalyzed Construction of Benzofurans, Benzofuranones and One-Pot Orthogonal C−H Functionalizations to Access Polysubstituted Benzofurans." Advanced Synthesis & Catalysis 360, no. 11 (2018): 2204–10. http://dx.doi.org/10.1002/adsc.201800298.

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8

Bera, Sourav Sekhar, Suvankar Debbarma, Sripati Jana, and Modhu Sudan Maji. "Cover Picture: Cobalt(III)-Catalyzed Construction of Benzofurans, Benzofuranones and One-Pot Orthogonal C−H Functionalizations to Access Polysubstituted Benzofurans (Adv. Synth. Catal. 11/2018)." Advanced Synthesis & Catalysis 360, no. 11 (2018): 2062. http://dx.doi.org/10.1002/adsc.201800646.

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9

Neog, Kashmiri, Babulal Das, and Pranjal Gogoi. "2,3-Diaroyl benzofurans from arynes: sequential synthesis of 2-aroyl benzofurans followed by benzoylation." Organic & Biomolecular Chemistry 16, no. 17 (2018): 3138–50. http://dx.doi.org/10.1039/c8ob00631h.

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A cascade synthetic strategy for the direct synthesis of 2-aroyl benzofurans from aryne precursors has been described. The synthesized 2-aroyl benzofurans were further benzoylated for the synthesis of 2,3-diaroyl benzofurans.

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10

Rádl, Stanislav, Petr Hezký, Jitka Urbánková, Petr Váchal, and Ivan Krejčí. "Synthesis and Analgesic Activity of Some 1-Benzofurans, 1-Benzothiophenes and Indoles." Collection of Czechoslovak Chemical Communications 65, no. 2 (2000): 280–96. http://dx.doi.org/10.1135/cccc20000280.

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3-Unsubstituted 1-benzofurans 1e and 1f, 3-methyl-1-benzofurans 1a-1d, and 3-amino-1-benzofurans 2a-2l, as well as 3-amino-1-benzothiophenes 3a, 3b and 3-aminoindoles 4a-4f, 11a, and 11b were prepared and tested as analgesics. The 3-amino-1-benzofurans 2 were prepared from the corresponding 2-hydroxybenzonitriles 5 and phenacyl bromides 6 via intermediates 7. Similar treatment of 2-sulfanylbenzonitrile (8) provided 3-amino-1-benzothiophenes 3. Appropriately substituted 2-aminobenzonitriles 9 then provided N-substituted 3-aminoindoles 4. 1-(Ethoxycarbonyl)indoles 4e and 4f were successfully dep

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11

Mazal, Ctibor, and Jaroslav Jonas. "Sulphonates and carboxylates of (E)- and (Z)-3-(hydroxymethylene)-trans-hexahydro-2(3H)-benzofuranone." Collection of Czechoslovak Chemical Communications 52, no. 1 (1987): 199–206. http://dx.doi.org/10.1135/cccc19870199.

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Sodium salt of 3-(hydroxymethylene)-trans-hexahydro-2(3H)-benzofuranone has been found to be formed as the (Z)-isomer in solid state and to exist as the (E)-isomer or a mixture of the both isomers in polar solvents. Some sulphonates and carboxylates of (E)-3-(hydroxymethylene)-trans-hexahydro-2(3H)-benzofuranone and (Z)-3-(hydroxymethylene)-trans-hexahydro-2(3H)-benzofuranone have been prepared by reactions of the corresponding isomers of this sodium salt with sulphonyl and acyl chlorides, respectively. The configuration of the isomeric derivatives was confirmed by 1H and 13C NMR spectra.

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12

Li, Xin, Feng Wang, Nan Dong, and Jin-Pei Cheng. "Phosphine-containing Lewis base catalyzed cyclization of benzofuranone type electron-deficient alkenes with allenoates: a facile synthesis of spirocyclic benzofuranones." Organic & Biomolecular Chemistry 11, no. 9 (2013): 1451. http://dx.doi.org/10.1039/c3ob27288e.

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13

Wang, Mo, Xiao Zhang, Zheng Ling, Zhenfeng Zhang, and Wanbin Zhang. "Direct enantioselective C-acylation for the construction of a quaternary stereocenter catalyzed by a chiral bicyclic imidazole." Chemical Communications 53, no. 8 (2017): 1381–84. http://dx.doi.org/10.1039/c6cc09451a.

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14

Aggarwal, Sakshi, Dasari Srinivas, Chinnabattigalla Sreenivasulu, and Gedu Satyanarayana. "Nickel catalyzed intramolecular oxidative coupling: synthesis of 3-aryl benzofurans." RSC Advances 10, no. 37 (2020): 22264–72. http://dx.doi.org/10.1039/d0ra03071f.

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We have developed nickel-catalyzed synthesis of 3-aryl benzofurans from ortho-alkenyl phenols via intramolecular dehydrogenative coupling. O<sub>2</sub> gas served as an oxidant and 3-aryl benzofurans were synthesized in good to very good yields.

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15

Xu, Kunhua, Wenming Chen, Xu Chen, Biao Wang, Jun Huang, and Xu Tian. "Organocatalytic asymmetric Friedel–Crafts alkylation/hemiketalization/lactonization cascade reactions: highly enantioselective synthesis of furo[2,3-b]benzofuranones." Organic Chemistry Frontiers 7, no. 13 (2020): 1679–84. http://dx.doi.org/10.1039/d0qo00475h.

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A highly diastereo- and enantioselective organocatalytic Friedel–Crafts alkylation/hemiketalization/lactonization cascade reaction generating furo[2,3-b]benzofuranones in good to excellent yields with high stereoselectivities.

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16

Raghava Doonaboyina, Abhilasha Mittal, and Sridhar Babu Gummadi. "Computational design, Synthesis of 4,6-dihydroxy-2-phenyl-1-benzofuran-3(2H)-one derivatives as new leads for anti-cancer activity." International Journal of Research in Pharmaceutical Sciences 10, no. 2 (2019): 896–908. http://dx.doi.org/10.26452/ijrps.v10i2.273.

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Benzofuranone is a bicyclic ring where a benzene ring fused with a furanone. Computation chemistry plays a major role in the development of new lead molecules. Computational tools docking, virtual screening, ADMET prediction are utilised in the identification of new lead molecules. Synthetic chemistry plays a major in developing a series of potent anti-cancer agents. Benzofuranone was synthesized by reacting benzene diols, and triols with bromo phenyl acetonitrile yielded an imine derivative are converted to a ketone with treatment with hydrochloric acid then cyclised with sodium acetate. The

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17

Peng, Xueke, Zhiye Hu, Jing Zhang та ін. "Construction of benzofuranone library via a metal-free, one-pot intermolecular condensation, and their application as efficient estrogen receptor β modulators". Chemical Communications 55, № 97 (2019): 14570–73. http://dx.doi.org/10.1039/c9cc05756k.

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Facile synthesis of benzofuranones as efficient estrogen receptor β modulators was achieved through a metal-free, one-pot intermolecular condensation between α-hydroxy aryl ketones and resorcinol derivatives.

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18

Li, Xin, Feng Wang, Nan Dong, and Jin-Pei Cheng. "ChemInform Abstract: Phosphine-Containing Lewis Base Catalyzed Cyclization of Benzofuranone Type Electron-Deficient Alkenes with Allenoates: A Facile Synthesis of Spirocyclic Benzofuranones." ChemInform 44, no. 29 (2013): no. http://dx.doi.org/10.1002/chin.201329101.

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19

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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20

Makarov, Anton S., Anna E. Kekhvaeva, Petrakis N. Chalikidi, Vladimir T. Abaev, Igor V. Trushkov, and Maxim G. Uchuskin. "A Simple Synthesis of Densely Substituted Benzofurans by Domino Reaction of 2-Hydroxybenzyl Alcohols with 2-Substituted Furans." Synthesis 51, no. 19 (2019): 3747–57. http://dx.doi.org/10.1055/s-0039-1690000.

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The Brönsted acid-catalyzed cascade synthesis of densely substituted benzofurans from easily available salicyl alcohols and biomass-derived furans has been developed. The disclosed sequence includes the intermediate formation of 2-(2-hydroxybenzyl)furans that quickly rearrange into functionalized benzofurans. The established protocol was applied for the total synthesis of sugikurojinol B.

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21

Wei, Qi Di, Yi-Ming Yao, Shun-Qin Chang, et al. "DBU-Catalyzed Inter- and Intramolecular Double Michael Addition of Donor–Acceptor Chromone-Pyrazolone/Benzofuranone Synthons: Access to Spiro-Pyrazolone/Benzofuranone-Hexahydroxanthone Hybrids." Synthesis 52, no. 01 (2019): 85–97. http://dx.doi.org/10.1055/s-0037-1610728.

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A DBU-catalyzed inter- and intramolecular double Michael addition of donor–acceptor chromone-pyrazolone/benzofuranone synthons and 3-methyl-4-nitro-5-alkenylisoxazoles has been established, which constructed structurally diverse spiro-pyrazolone/benzofuranone-hexahydroxanthone hybrids bearing five consecutive stereocenters in good yields (up to 91%) with high diastereoselectivities (up to >20:1 dr). Moreover, this strategy further expanded the synthetic potential of bifunctional donor–acceptor chromones, and demonstrated great potential for applications in medicinal chemistry.

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22

Hu, Chen, Gang Hong, Pradip D. Nahide, et al. "C(sp3)–H hydroxylation of fluorenes, oxindoles and benzofuranones with a Mg(NO3)2–HP(O)Ph2 oxidation system." Organic Chemistry Frontiers 6, no. 17 (2019): 3167–71. http://dx.doi.org/10.1039/c9qo00778d.

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A novel oxidation system in which magnesium nitrate is used as an oxidant in the presence of diphenylphosphine oxide permits the C(sp<sup>3</sup>)–H hydroxylation of fluorenes, oxindoles, and benzofuranones.

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23

Wang, De, Guo-Peng Wang, Yao-Liang Sun, et al. "Chiral phosphine-catalyzed tunable cycloaddition reactions of allenoates with benzofuranone-derived olefins for a highly regio-, diastereo- and enantioselective synthesis of spiro-benzofuranones." Chemical Science 6, no. 12 (2015): 7319–25. http://dx.doi.org/10.1039/c5sc03135d.

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24

Li, Yifan, and Jérôme Waser. "Zinc–gold cooperative catalysis for the direct alkynylation of benzofurans." Beilstein Journal of Organic Chemistry 9 (August 29, 2013): 1763–67. http://dx.doi.org/10.3762/bjoc.9.204.

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The direct alkynylation of benzofurans was achieved for the first time using the hypervalent iodine reagent 1-[(triisopropylsilyl)ethynyl]-1,2-benziodoxol-3(1H)-one (TIPS-EBX) based on the cooperative effect between a gold catalyst and a zinc Lewis acid. High selectivity was observed for C2-alkynylation of benzofurans substituted with alkyl, aryl, halogen and ether groups. The reaction was also successful in the case of the more complex drug 8-methoxypsoralen (8-MOP).

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25

Ren, Hongjun, Manman Sun, Jinyu Song, Lei Wang, Wenguang Yin, and Maozhong Miao. "Direct Propargylation of ortho-Quinone Methides with Alkynyl Zinc Reagents: An Application to the One-Pot Synthesis of 2,3-Disubstituted Benzofurans." Synlett 31, no. 08 (2020): 818–22. http://dx.doi.org/10.1055/s-0039-1691739.

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A transition-metal-free propargylation of ortho-quinone methides (o-QMs) with alkynyl zinc reagents was achieved. A conjugate alkynylation of an o-QM and subsequent cyclization sequence in the presence of KOt-Bu for the synthesis of 2,3-disubstituted benzofurans in one pot was developed. This efficient strategy exhibits good functional-group compatibility and gives moderate to good yields. The present reaction might serve as an attractive method for the synthesis of polysubstituted benzofurans.

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26

Wang, Bingqiao, Qiu Zhang, Juan Luo, Zongjie Gan, Wengao Jiang та Qiang Tang. "One-Step Regioselective Synthesis of Benzofurans from Phenols and α-Haloketones". Molecules 24, № 11 (2019): 2187. http://dx.doi.org/10.3390/molecules24112187.

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Reported here is the direct synthesis of naphthofurans and benzofurans from readily available phenols and α-haloketones promoted by titanium tetrachloride which combines Friedel–Crafts-like alkylation and intramolecular cyclodehydration into one step. This simple protocol allows for the formation of a variety of high value naphthofurans and benzofurans within which a series of cyclic and acyclic groups are readily incorporated. This process demonstrates the advantages of high levels of regioselectivity, broad substrate scope, and moderate to excellent yields.

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27

Schmittel, Michael, Mukul Lal, Wolfdieter A. Schenk, Michael Hagel, Nicolai Burzlaff та Anja Langels. "Synthesis and One-Electron Oxidation Chemistry of Stable β,β-Dimesityl Enols with Heteroaryl Substituents". Zeitschrift für Naturforschung B 58, № 9 (2003): 877–84. http://dx.doi.org/10.1515/znb-2003-0910.

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Four novel stable enols (one characterized by X-ray crystal structure analysis) were synthesized and investigated under oxidative conditions to yield benzofurans. Depending on the donor qualities of the heteroaryl substituent the reaction following the one-electron oxidation could be stopped on the stage of the cyclohexadienyl cation whose lifetime was measured. Oxidation potentials were determined for the enols, the enolates and the α-carbonyl radicals. Oxidation of benzofurans yielded dimeric species or intramolecular cyclization products.

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28

Ma, Zhanwei, Min Zhou, Lin Ma та Min Zhang. "Synthesis of benzofurans from the cyclodehydration of α-phenoxy ketones mediated by Eaton’s reagent". Journal of Chemical Research 44, № 7-8 (2020): 426–36. http://dx.doi.org/10.1177/1747519820907244.

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Cyclodehydration of α-phenoxy ketones promoted by Eaton’s reagent (phosphorus pentoxide–methanesulfonic acid) is used to prepare 3-substituted or 2,3-disubstituted benzofurans with moderate to excellent yields under mild conditions. The method provides a facile access to benzofurans from readily available starting materials such as phenols and α-bromo ketones. The reaction is highly efficient, which is attributed to the good reactivity and fluidity of Eaton’s reagent. The reaction can be applied to prepare naphthofurans, furanocoumarins, benzothiophenes, and benzopyrans.

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29

HOWLETT, David R., Amanda E. PERRY, Fiona GODFREY та ін. "Inhibition of fibril formation in β-amyloid peptide by a novel series of benzofurans". Biochemical Journal 340, № 1 (1999): 283–89. http://dx.doi.org/10.1042/bj3400283.

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A series of benzofuran derivatives have been identified as inhibitors of fibril formation in the β-amyloid peptide. The activity of these compounds has been assessed by a novel fibril-formation-specific immunoassay and for their effects on the production of a biologically active fibril product. The inhibition afforded by the compounds seems to be associated with their binding to β-amyloid, as identified by scintillation proximity binding assay. Binding assays and NMR studies also indicate that the inhibition is associated with self-aggregation of the compounds. There is a close correlation bet

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30

Enders, Dieter, Long Zhao, and Gerhard Raabe. "Asymmetric Synthesis of 2,2-Disubstituted Benzofuranones through an Organocatalytic Alkylation with Nitroallylic Acetates." Synthesis 51, no. 06 (2018): 1391–98. http://dx.doi.org/10.1055/s-0037-1610337.

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The asymmetric allylic alkylation of benzofuran-3(2H)-ones with nitroallylic acetates has been achieved employing a bifunctional thiourea organocatalyst via SN2′ substitution. A series of 2,2-disubstituted benzofuranones bearing adjacent tetrasubstituted and tertiary stereocenters have been synthesized with moderate to good yields and very good stereoselectivities.

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31

Gemoets, Hannes P. L., Indrek Kalvet, Alexander V. Nyuchev, et al. "Mild and selective base-free C–H arylation of heteroarenes: experiment and computation." Chemical Science 8, no. 2 (2017): 1046–55. http://dx.doi.org/10.1039/c6sc02595a.

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32

Sreenivasulu, Chinnabattigalla, A. Gopi Krishna Reddy, and G. Satyanarayana. "Oxidative annulations triggered by a simple Lewis acid: facile synthesis of benzofurans." Organic Chemistry Frontiers 4, no. 6 (2017): 972–77. http://dx.doi.org/10.1039/c6qo00531d.

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33

Wang, De, Guo-Peng Wang, Yao-Liang Sun, et al. "ChemInform Abstract: Chiral Phosphine-Catalyzed Tunable Cycloaddition Reactions of Allenoates with Benzofuranone-Derived Olefins for a Highly Regio-, Diastereo- and Enantioselective Synthesis of Spiro-Benzofuranones." ChemInform 47, no. 11 (2016): no. http://dx.doi.org/10.1002/chin.201611120.

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34

Jung, Youngeun, and Ikyon Kim. "Chemoselective reduction of quinols as an alternative to Sonogashira coupling: synthesis of polysubstituted benzofurans." Organic & Biomolecular Chemistry 14, no. 44 (2016): 10454–72. http://dx.doi.org/10.1039/c6ob01941b.

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35

Ma, Weimin, Jiawei Huang, Xianyu Huang, et al. "Direct construction of 2,3-unsubstituted benzofurans and benzothiophenes via a metal-free catalyzed intramolecular Friedel–Crafts reaction." Organic Chemistry Frontiers 6, no. 4 (2019): 493–97. http://dx.doi.org/10.1039/c8qo01204k.

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36

Raghava Doonaboyina, Abhilasha Mittal, and Sridhar Babu Gummadi. "Docking, Screening, Synthesis of 4-hydroxy-6-methyl-2-phenyl-1-benzofuran-3(2H)-one derivatives as new leads for anti-cancer activity." International Journal of Research in Pharmaceutical Sciences 10, no. 2 (2019): 883–95. http://dx.doi.org/10.26452/ijrps.v10i2.271.

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Auroneis a bicyclic ring where a benzene ring fused with a furanone. Docking is an efficient tool in the development of new lead molecules. Docking, virtual screening, ADMET prediction are prominent devices in the identification of new lead molecules. Synthetic chemistry plays a major in developing a series of potent anti-cancer agents. Benzofuranone was synthesized by reacting benzene diols, and triols with bromo phenyl acetonitrile yielded an imine derivative are converted to a ketone with treatment with hydrochloric acid then cyclised with sodium acetate. The compounds identity and purity w

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37

Sulaiman, Syazreen N., Maywan Hariono, Haslinda Mohd Salleh, et al. "Chemical Constituents From Endiandra kingiana (Lauraceae) as Potential Inhibitors for Dengue Type 2 NS2B/NS3 Serine Protease and its Molecular Docking." Natural Product Communications 14, no. 9 (2019): 1934578X1986101. http://dx.doi.org/10.1177/1934578x19861014.

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A phytochemical study on the bark of Endiandra kingiana Gamble (Lauraceae) led to the isolation of a new benzofuranone, 4-hydroxy-6-(9,13,17-trimethyldodeca-8,12,16-trienyl)-2(3 H)-benzofuranone (1), together with 6 known compounds. Their structures were established on the basis of detailed spectroscopic analysis, including one- and two-dimensional nuclear magnetic resonance (NMR) and electrospray Ionisation mass spectrometry techniques. Compounds 1-3 showed moderate inhibition against dengue virus type 2 NS2B/NS3 protease with percentage inhibitions of 61.23 ± 6.96, 69.92 ± 3.34, and 62.02 ±

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38

Li, Fei, Jun-Jie Wang, and Guan-Wu Wang. "Palladium-catalyzed synthesis of [60]fullerene-fused benzofurans via heteroannulation of phenols." Chemical Communications 53, no. 11 (2017): 1852–55. http://dx.doi.org/10.1039/c6cc09080j.

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39

Shoji, Taku, Miwa Tanaka, Sho Takagaki, et al. "Synthesis of azulene-substituted benzofurans and isocoumarins via intramolecular cyclization of 1-ethynylazulenes, and their structural and optical properties." Organic & Biomolecular Chemistry 16, no. 3 (2018): 480–89. http://dx.doi.org/10.1039/c7ob02861j.

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40

Agasti, Soumitra, Upendra Sharma, Togati Naveen, and Debabrata Maiti. "Orthogonal selectivity with cinnamic acids in 3-substituted benzofuran synthesis through C–H olefination of phenols." Chemical Communications 51, no. 25 (2015): 5375–78. http://dx.doi.org/10.1039/c4cc07026g.

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41

Sivaraman, Aneesh, Dipesh S. Harmalkar, Jiyoon Kang, Yongseok Choi, and Kyeong Lee. "A protecting group-free divergent synthesis of natural benzofurans via one-pot synthesis of 2-bromo-6-hydroxybenzofurans." Organic & Biomolecular Chemistry 17, no. 8 (2019): 2153–61. http://dx.doi.org/10.1039/c8ob03102a.

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42

Zhang, Dongxin, Jingjing Man, Yan Chen, Lei Yin, Junchao Zhong, and Qian-Feng Zhang. "Synthesis of poly-functionalized benzofurans via one-pot domino oxidation/[3+2] cyclization reactions of a hydroquinone ester and ynamides." RSC Advances 9, no. 22 (2019): 12567–71. http://dx.doi.org/10.1039/c9ra02144b.

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43

Kuroda, Chiaki, Chiemi Shibayama, Kyosuke Inoue, et al. "Chemical Lineages of Ligularia Fischeri." Natural Product Communications 11, no. 2 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100202.

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Six Ligularia fischeri samples, two from Sichuan (samples 1 and 2) and four from Chongqing (samples 3–6), were examined for root chemicals and the DNA sequence of the internal transcribed spacers of the ribosomal RNA gene. Samples 2 and 3 contained benzofurans. The isolation of benzofurans shows that the chemical diversity in L. fischeri is higher than previously reported. Samples 1, 4, 5, and 6 contained eremophilanes. However, the compounds were different between sample 1 and samples 4–6, indicating variation within eremophilane producers. DNA data indicated that introgression could be a mec

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44

Maluleka, Marole Maria, and Malose Jack Mphahlele. "Design, Synthesis, and Biological Evaluation of 4-aminoquinazoline Appended-Benzofuran Hybrids as Epidermal Growth Factor Receptor Inhibitors." Proceedings 22, no. 1 (2019): 22. http://dx.doi.org/10.3390/proceedings2019022022.

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Yadav, Deepak, Krishna, Sunil K. Sharma, and Rajeev S. Menon. "Regioselective synthesis of arylsulfonyl heterocycles from bromoallyl sulfones via intramolecular Heck coupling reaction." Organic & Biomolecular Chemistry 18, no. 36 (2020): 7188–92. http://dx.doi.org/10.1039/d0ob01623c.

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Saxena, Paridhi, Neha Maida, and Manmohan Kapur. "Dioxazolones as masked ester surrogates in the Pd(ii)-catalyzed direct C–H arylation of 6,5-fused heterocycles." Chemical Communications 55, no. 75 (2019): 11187–90. http://dx.doi.org/10.1039/c9cc05563k.

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Paraja, Miguel, M. Carmen Pérez-Aguilar, and Carlos Valdés. "The Pd-catalyzed synthesis of benzofused carbo- and heterocycles through carbene migratory insertion/carbopalladation cascades with tosylhydrazones." Chemical Communications 51, no. 90 (2015): 16241–43. http://dx.doi.org/10.1039/c5cc06348e.

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Islam, Md Monarul, Thamina Akther, Yusuke Ikejiri, et al. "Synthesis, structural properties, electrophilic substitution reactions and DFT computational studies of calix[3]benzofurans." RSC Advances 6, no. 56 (2016): 50808–17. http://dx.doi.org/10.1039/c6ra06219a.

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Sha, Qiang, and Haixuan Liu. "De novo synthesis of benzofurans via trifluoroacetic acid catalyzed cyclization/oxidative aromatization cascade reaction of 2-hydroxy-1,4-diones." Organic & Biomolecular Chemistry 17, no. 32 (2019): 7547–51. http://dx.doi.org/10.1039/c9ob01422e.

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Lengyel-Zhand, Zsofia, John J. Ferrie, Bieneke Janssen та ін. "Synthesis and characterization of high affinity fluorogenic α-synuclein probes". Chemical Communications 56, № 24 (2020): 3567–70. http://dx.doi.org/10.1039/c9cc09849f.

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Abstract:

Fluorescent molecules are powerful tools for imaging α-synuclein pathology. Here, we demonstrate that benzofuranone derivatives have high affinity for α-synuclein and display different binding to α-synucleinopathies in post-mortem brain tissue.

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