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Journal articles on the topic 'Pyrrolo[3,2-c]pyridine'

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1

Borsini, Elena, Gianluigi Broggini, Andrea Fasana, Chiara Baldassarri, Angelo M. Manzo, and Alcide D. Perboni. "Access to pyrrolo-pyridines by gold-catalyzed hydroarylation of pyrroles tethered to terminal alkynes." Beilstein Journal of Organic Chemistry 7 (October 26, 2011): 1468–74. http://dx.doi.org/10.3762/bjoc.7.170.

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In a simple procedure, the intramolecular hydroarylation of N-propargyl-pyrrole-2-carboxamides was accomplished with the aid of gold(III) catalysis. The reaction led to differently substituted pyrrolo[2,3-c]pyridine and pyrrolo[3,2-c]pyridine derivatives arising either from direct cyclization or from a formal rearrangement of the carboxamide group. Terminal alkynes are essential to achieve bicyclic pyrrolo-fused pyridinones by a 6-exo-dig process, while the presence of a phenyl group at the C–C triple bond promotes the 7-endo-dig cyclization giving pyrrolo-azepines.
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2

Kobelev, Aleksandr I., Ekaterina E. Stepanova, Maksim V. Dmitriev, and Andrey N. Maslivets. "Annulation of 1H-pyrrole-2,3-diones by thioacetamide: an approach to 5-azaisatins." Beilstein Journal of Organic Chemistry 15 (February 7, 2019): 364–70. http://dx.doi.org/10.3762/bjoc.15.32.

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A novel approach to 1H-pyrrolo[3,2-c]pyridine-2,3-diones (5-azaisatins) has been developed via an unprecedented annulation of pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones by thioacetamide. A new way of C–H functionalization of thioacetamide has been discovered. The reaction proceeds under green catalyst-free conditions.
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3

A. A. Elbannany, Araf, and Laila I. Ibrahim. "Synthesis of Pyrrole, Pyrrolidone, Pyrrolo[3,4-c]pyrazole, Pyrrolo[3,2-b]pyridine and Pyrrolo[3,2-b]pyrrole Derivatives." HETEROCYCLES 27, no. 9 (1988): 2071. http://dx.doi.org/10.3987/com-88-4628.

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4

Altomare, C., L. Summo, S. Cellamare, et al. "Pyrrolo[3,2- c ]pyridine derivatives as inhibitors of platelet aggregation." Bioorganic & Medicinal Chemistry Letters 10, no. 6 (2000): 581–84. http://dx.doi.org/10.1016/s0960-894x(00)00052-4.

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5

Borisova, T. N., A. V. Varalmov, N. D. Sergeeva, et al. "Pyrrolo[3,2-c]piperidines." Chemistry of Heterocyclic Compounds 23, no. 7 (1987): 799–803. http://dx.doi.org/10.1007/bf00475655.

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6

Varlamov, A. V., T. N. Borisova, and L. G. Voskresenskii. "Electrophilic rearrangement of N-H-tretrahydro-3H-pyrrolo[3,2-c]pyridine to N-methyltetrahydropyrrolo[3,2-c]pyridine under Trofimov reaction conditions." Chemistry of Heterocyclic Compounds 31, no. 1 (1995): 123. http://dx.doi.org/10.1007/bf01171308.

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7

Altomare, C., L. Summo, S. Cellamare, et al. "ChemInform Abstract: Pyrrolo[3,2-c]pyridine Derivatives as Inhibitors of Platelet Aggregation." ChemInform 31, no. 28 (2010): no. http://dx.doi.org/10.1002/chin.200028143.

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8

Voskressensky, Leonid G., Modesto de Candia, Andrea Carotti, et al. "Investigation on the antiplatelet activity of pyrrolo[3,2-c]pyridine-containing compounds." Journal of Pharmacy and Pharmacology 55, no. 3 (2003): 323–32. http://dx.doi.org/10.1211/002235702676.

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9

Gaumet, Vincent, Emmanuel Moreau, Abbass Taleb, et al. "Short and efficient access to imidazo[1,2-a]pyrrolo[3,2-c]pyridine derivatives." Tetrahedron Letters 51, no. 47 (2010): 6082–85. http://dx.doi.org/10.1016/j.tetlet.2010.09.056.

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10

Bourgeois, Werner, and Frank Seela. "Synthesis of ara-3,7-dideazaadenosine and related pyrrolo[3,2-c]pyridine D-arabinofuranosides." Journal of the Chemical Society, Perkin Transactions 1, no. 2 (1991): 279. http://dx.doi.org/10.1039/p19910000279.

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11

Bencková, Mária. "Synthesis of Pyrrolo[2',3':4,5]Furo[3,2– c ]Pyridine–2–Carboxylic Acids." Molecules 1, no. 10 (1997): 163–65. http://dx.doi.org/10.1007/s007830050032.

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12

Speicher, Andreas, T. Eicher, L. M. Tevzadze, and T. E. Khoshtariya. "Synthese der isomeren 1H-Pyrrolo[3,2-b] und 3H-Pyrrolo[3,2-c]phenoxathiine." Journal für Praktische Chemie/Chemiker-Zeitung 339, no. 1 (1997): 669–71. http://dx.doi.org/10.1002/prac.199733901121.

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13

VARLAMOV, A. V., T. N. BORISOVA, and L. G. VOSKRESENSKII. "ChemInform Abstract: Electrophilic Rearrangement of N-H-Tetrahydro-3H-pyrrolo(3,2-c) pyridine to N-Methyltetrahydropyrrolo(3,2-c)pyridine under Conditions of the Trofimov Reaction." ChemInform 26, no. 35 (2010): no. http://dx.doi.org/10.1002/chin.199535180.

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14

BOURGEOIS, W., and F. SEELA. "ChemInform Abstract: Synthesis of ara-3,7-Dideazaadenosine Related Pyrrolo(3,2-c)pyridine D- Arabinofuranosides." ChemInform 22, no. 17 (2010): no. http://dx.doi.org/10.1002/chin.199117266.

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15

Chopra, Deepak, K. Nagarajan, and T. N. Guru Row. "5-Benzyl-1-(4-fluorophenyl)-2-phenyl-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): o1588—o1590. http://dx.doi.org/10.1107/s1600536806010427.

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16

BABERKINA, E. P., M. E. SAMOILOVA, V. N. BUYANOV, et al. "ChemInform Abstract: Pyrrolophenanthridines. Part 4. Synthesis of 3H-Pyrrolo(3,2-c)- and 3H-Pyrrolo(3,2-a)phenanthridines. Reactivity of 3H-Pyrrolo(3,2-c)phenanthridine." ChemInform 23, no. 1 (2010): no. http://dx.doi.org/10.1002/chin.199201189.

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17

Wójcicka, Anna, and Aleksandra Redzicka. "An Overview of the Biological Activity of Pyrrolo[3,4-c]pyridine Derivatives." Pharmaceuticals 14, no. 4 (2021): 354. http://dx.doi.org/10.3390/ph14040354.

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Pyrrolo[3,4-c]pyridine is one of the six structural isomers of the bicyclic ring system containing a pyrrole moiety fused to a pyridine nucleus. The broad spectrum of pharmacological properties of pyrrolo[3,4-c]pyridine derivatives is the main reason for developing new compounds containing this scaffold. This review presents studies on the biological activity of pyrrolo[3,4-c]pyridines that have been reported in the scientific literature. Most of these derivatives have been studied as analgesic and sedative agents. Biological investigations have shown that pyrrolo[3,4-c]pyridines can be used t
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18

Mosiagin, Ivan P., Olesya A. Tomashenko, Dar’ya V. Spiridonova, Mikhail S. Novikov, Sergey P. Tunik, and Alexander F. Khlebnikov. "Free-radical cyclization approach to polyheterocycles containing pyrrole and pyridine rings." Beilstein Journal of Organic Chemistry 17 (June 23, 2021): 1490–98. http://dx.doi.org/10.3762/bjoc.17.105.

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A wide range of derivatives with new pyrido[2,1-a]pyrrolo[3,4-c]isoquinoline skeleton was synthesized by free-radical intramolecular cyclization of o-bromophenyl-substituted pyrrolylpyridinium salts using the (TMS)3SiH/AIBN system. The cyclization provides generally good yields of pyrido[2,1-a]pyrrolo[3,4-c]isoquinoline hydrobromides having no additional radical-sensitive substituents. The free bases can be obtained from the synthesized hydrobromides in quantitative yield by basification at room temperature. The selectivity control of intramolecular arylation was achieved by replacing the halo
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19

Benckova, M., A. Krutosikova, J. Pullman, and N. Pronayova. "ChemInform Abstract: Pyrrolo[2′,3′:4,5]furo[3,2-c]pyridine Derivatives. Reactions in the Pyridine and Pyrrole Ring." ChemInform 30, no. 46 (2010): no. http://dx.doi.org/10.1002/chin.199946155.

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20

A. A. Elbannany, Araf, Afaf A. A. Elbannany, and Laila I. Ibrahim. "Synthesis of Pyrrole, Pyrrolo[3,4-b]pyridine and Pyrrplo[3,2-b]pyridine Derivatives." HETEROCYCLES 26, no. 9 (1987): 2323. http://dx.doi.org/10.3987/r-1987-09-2323.

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21

MEADE, E. A., and L. M. BEAUCHAMP. "ChemInform Abstract: The Synthesis of 4-Benzylamino-6-methyl-1H-pyrrolo(3,2-c)pyridine and 4-Benzylamino-6-methyl-1H-pyrrolo(2,3-b)pyridine." ChemInform 27, no. 39 (2010): no. http://dx.doi.org/10.1002/chin.199639171.

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22

Chrovian, Christa C., Akinola Soyode-Johnson, Jessica L. Wall, et al. "1H-Pyrrolo[3,2-b]pyridine GluN2B-Selective Negative Allosteric Modulators." ACS Medicinal Chemistry Letters 10, no. 3 (2019): 261–66. http://dx.doi.org/10.1021/acsmedchemlett.8b00542.

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23

Jose, Gilish, T. H. Suresha Kumara, Gopalpur Nagendrappa, et al. "Synthesis, crystal structure, molecular docking and antimicrobial evaluation of new pyrrolo[3,2-c]pyridine derivatives." Journal of Molecular Structure 1081 (February 2015): 85–95. http://dx.doi.org/10.1016/j.molstruc.2014.10.006.

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24

Caumet, Vincent, and et al et al. "ChemInform Abstract: Short and Efficient Access to Imidazo[1,2-a]pyrrolo[3,2-c]pyridine Derivatives." ChemInform 42, no. 10 (2011): no. http://dx.doi.org/10.1002/chin.201110156.

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25

Jose, Gilish, Tholappanavara H. Suresha Kumara, Haliwana B. V. Sowmya, et al. "Synthesis, molecular docking, antimycobacterial and antimicrobial evaluation of new pyrrolo[3,2- c ]pyridine Mannich bases." European Journal of Medicinal Chemistry 131 (May 2017): 275–88. http://dx.doi.org/10.1016/j.ejmech.2017.03.015.

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26

Deeb, Ali, Besher Bayoumy, Fathy Yasine, and Rida Fikry. "Pyridazine Derivatives and Related Compounds, Part 4. Pyrrolo[2,3-c]pyridazines and Furo[2,3-c]pyndazines, Synthesis and Some Reactions." Zeitschrift für Naturforschung B 47, no. 3 (1992): 418–23. http://dx.doi.org/10.1515/znb-1992-0320.

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Ethyl 5-amino-3,4-diphenyl-7H-pyrrolo[2,3-c]pyridazine-6-carboxylate (1), ethyl 5-aminofuro[ 2,3-c]pyridazine-6-carboxylate (2) and 5-aminofuro[2,3-c]pyridazine-6-carboxamide (3), are obtained from 4-cyano-5,6-diphenyl-3(2H)-pyridazinone. 5-Acetamido and 5-chloroacetamido derivatives prepared from 1, undergo cyclization on heating to form 2-substituted pyridazino[4',3':4,5]pyrrolo[3,2-d]oxazin-4(5H)-one (5a, b). The reaction of 1 and 2 with hydrazine gave 6-carbohydrazide derivatives (7 a, b). Compound 3 undergoes condensation with acetyl chloride, chloroacetyl chloride, benzoyl chloride, form
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27

Molina, P., P. M. Fresneda, and F. Hurtado. "An Efficient Iminophosphorane-Mediated Synthesis of Thieno[3,2-c]pyridine, Thieno[2,3-c]pyridine and Furo[3,2-c]-pyridine Derivatives." Synthesis 1987, no. 01 (1987): 45–48. http://dx.doi.org/10.1055/s-1987-27837.

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28

El-Gamal, Mohammed I., and Chang-Hyun Oh. "Pyrrolo[3,2-c]pyridine derivatives with potential inhibitory effect against FMS kinase: in vitro biological studies." Journal of Enzyme Inhibition and Medicinal Chemistry 33, no. 1 (2018): 1160–66. http://dx.doi.org/10.1080/14756366.2018.1491563.

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29

Smith, Roger A., Zahra Fathi, Su-Ellen Brown, et al. "Constrained analogs of CB-1 antagonists: 1,5,6,7-Tetrahydro-4H-pyrrolo[3,2-c]pyridine-4-one derivatives." Bioorganic & Medicinal Chemistry Letters 17, no. 3 (2007): 673–78. http://dx.doi.org/10.1016/j.bmcl.2006.10.095.

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30

Cai, Jinhui, Feifei Li, Guo-Jun Deng, Xiaochen Ji, and Huawen Huang. "The cyclopropylimine rearrangement/Povarov reaction cascade for the assembly of pyrrolo[3,2-c]quinoline derivatives." Green Chemistry 18, no. 12 (2016): 3503–6. http://dx.doi.org/10.1039/c6gc00779a.

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31

Bathula, Chandramohan, Catarina Roma-Rodrigues, Jyoti Chauhan, Alexandra R. Fernandes та Subhabrata Sen. "Synthesis of tetrahydro-1H-indolo[2,3-b]pyrrolo[3,2-c]quinolones via intramolecular oxidative ring rearrangement of tetrahydro-β-carbolines and their biological evaluation". New Journal of Chemistry 42, № 8 (2018): 6538–47. http://dx.doi.org/10.1039/c7nj04616b.

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32

Dudouit, Fabienne, Raymond Houssin, and Jean-Pierre Hénichart. "A synthesis of new pyrrolo[3,2-c]quinolines." Journal of Heterocyclic Chemistry 38, no. 3 (2001): 755–58. http://dx.doi.org/10.1002/jhet.5570380335.

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33

Park, Kwanghee Koh, and Henry Rapoport. "Synthesis of substituted 1H-pyrrolo[3,2-c]quinolines." Journal of Heterocyclic Chemistry 29, no. 4 (1992): 1031–32. http://dx.doi.org/10.1002/jhet.5570290464.

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34

Stashenko, E. E., P. I. Zakharov, T. N. Borisova, A. V. Varlamov, B. S. Subbotin, and N. S. Prostakov. "Mass-spectral investigation of pyrrolo[3,2-c]piperidines." Chemistry of Heterocyclic Compounds 24, no. 2 (1988): 176–79. http://dx.doi.org/10.1007/bf00473328.

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35

Rao, N. Sree Lakshmana, Mandava V. Basaveswara Rao, and K. R. S. Prasad. "Synthesis and Antibacterial Evaluation of Hydrazone Derivatives Bearing 6-Chlorothieno[3,2-c]pyridine Moiety." Asian Journal of Chemistry 31, no. 3 (2019): 627–32. http://dx.doi.org/10.14233/ajchem.2019.21461.

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The present investigation describes the overall preparation of 6-chlorothieno[3,2-c]pyridine-2-carbohydrazide-hydrazone subsidiaries (7a-r) from industrially accessible ethyl-4,6-dichloronicotinate as starting material. The synthesis of these derivatives involve some prominent reactions such as (i) NaBH4 reduction of ethyl ester group (ii) MnO2 oxidation of 1º alcohol (iii) cyclization of aldehyde with ethylmercapto acetate leading to thieno[3,2-c]pyridine ring (iv) hydrazinolysis of the ethyl group (v) condensation of selected aldehydes with 6-chlorothieno[3,2-c]pyridine-2-carbohydrazide lead
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36

Schwehm, Carolin, William Lewis, Alexander J. Blake, Barrie Kellam, and Michael J. Stocks. "Preparation and structural analysis of (±)-cis-ethyl 2-sulfanylidenedecahydro-1,6-naphthyridine-6-carboxylate and (±)-trans-ethyl 2-oxooctahydro-1H-pyrrolo[3,2-c]pyridine-5-carboxylate." Acta Crystallographica Section C Structural Chemistry 70, no. 12 (2014): 1161–68. http://dx.doi.org/10.1107/s205322961402436x.

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Bicycle ring closure on a mixture of (4aS,8aR)- and (4aR,8aS)-ethyl 2-oxodecahydro-1,6-naphthyridine-6-carboxylate, followed by conversion of the separatedcisandtransisomers to the corresponding thioamide derivatives, gave (4aSR,8aRS)-ethyl 2-sulfanylidenedecahydro-1,6-naphthyridine-6-carboxylate, C11H18N2O2S. Structural analysis of this thioamide revealed a structure with two crystallographically independent conformers per asymmetric unit (Z′ = 2). The reciprocal bicycle ring closure on (3aRS,7aRS)-ethyl 2-oxooctahydro-1H-pyrrolo[3,2-c]pyridine-5-carboxylate, C10H16N2O3, was also accomplished
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37

Karkhelikar, Manjusha V., Rajeev R. Jha, B. Sridhar, Pravin R. Likhar, and Akhilesh K. Verma. "An expedient approach to pyrrolo[3,2-c]quinolines via regioselective formation of the pyrrole nucleus over indoles." Chem. Commun. 50, no. 62 (2014): 8526–28. http://dx.doi.org/10.1039/c4cc02466d.

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38

Samanta, Khokan, Prasanta Patra, Gandhi Kumar Kar, Shaishab Kumar Dinda, and Dibyendu Shekhar Mahanty. "Diverse synthesis of pyrrolo/indolo[3,2-c]coumarins as isolamellarin-A scaffolds: a brief update." New Journal of Chemistry 45, no. 17 (2021): 7450–85. http://dx.doi.org/10.1039/d0nj06267g.

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39

Zhang, Zhiguo, Xiaolong Gao, Zhonglian Li, et al. "PIFA-Mediated oxidative cyclization of 1-aroyl-N-arylcyclopropane-1-carboxamides and their application in the synthesis of pyrrolo[3,2-c]quinolinones." Organic Chemistry Frontiers 4, no. 3 (2017): 404–8. http://dx.doi.org/10.1039/c6qo00598e.

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40

Bencková, Mária, and Alžbeta Krutošíková. "5-Aminofuro[3,2-c]pyridinium Tosylates and Substituted Furo[3,2-c]pyridine N-Oxides: Synthesis and Reactions." Collection of Czechoslovak Chemical Communications 64, no. 3 (1999): 539–47. http://dx.doi.org/10.1135/cccc19990539.

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5-Aminofuro[3,2-c]pyridinium tosylates 2a-2c were synthesized by direct N-amination of furo[3,2-c]pyridines 1a-1c with O-(4-methylbenzenesulfonyl)hydroxylamine in dichloromethane. Zwitterionic furo[3,2-c]pyridinium N-imides 3a-3c generated from 2a-2c and anhydrous potassium carbonate in N,N-dimethylformamide afforded by 1,3-dipolar cycloaddition reactions with dimethyl butynedioate or ethyl propiolate the corresponding furo[3,2-c]pyrazolo[1,5-a]pyridinecarboxylic esters 4a-4c and 5a-5c. Furo[3,2-c]pyridine N-oxides 6a-6c and their benzo derivative 6d were synthesized by reaction of 1 with 3-ch
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41

New, James S., William L. Christopher, Joseph P. Yevich, et al. "The thieno[3,2-c]pyridine and furo[3,2-c]pyridine rings: new pharmacophores with potential antipsychotic activity." Journal of Medicinal Chemistry 32, no. 6 (1989): 1147–56. http://dx.doi.org/10.1021/jm00126a002.

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42

Hrašna, Martin, Eva Ürgeová, and Alžbeta Krutošíková. "Synthesis, Complex Compounds and Antimicrobial Activity of Some Derivatives of Furo[3,2-C]Pyridine and Their Starting Compounds." Nova Biotechnologica et Chimica 11, no. 1 (2012): 73–85. http://dx.doi.org/10.2478/v10296-012-0008-x.

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Synthesis, Complex Compounds and Antimicrobial Activity of Some Derivatives of Furo[3,2-C]Pyridine and Their Starting CompoundsSome [3,2-c]pyridine derivatives were synthesized. 3-(Furan-2-yl)propenoic acid (1a) was prepared from furan-2-carbaldehyde under the Perkin's conditions. Obtained acid was converted to the corresponding azide3, which in turn was cyclized to give furo[3,2-c]pyridin-4(5H)-one (4a). The reaction of pyridone4awith phosphorus oxychloride rendered the chloroderivative7a, which was treated in the condition of Suzuki coupling reaction with boronic acid to give 4-phenylfuro[3,
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43

Anizon, Fabrice, Bruno Pfeiffer, and Michelle Prudhomme. "Synthesis of pyridino[3′,2′:4,5]pyrrolo[3,2-g]pyrrolo[3,4-e]indolizin-1,3-dione and pyrrolo[3,2-c]pyrazole skeletons." Tetrahedron Letters 47, no. 4 (2006): 433–36. http://dx.doi.org/10.1016/j.tetlet.2005.11.076.

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44

Li, Chunmei, Furen Zhang, and Chenze Qi. "A multicomponent two-step strategy for the synthesis of polysubstituted pyrrolo[3,2-c]pyridin-4-ones using a solid acid as a recyclable catalyst." Green Chemistry 21, no. 11 (2019): 3109–15. http://dx.doi.org/10.1039/c9gc01120j.

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45

El-Gamal, Mohammed I., Mohammed S. Abdel-Maksoud, Mahmoud M. Gamal El-Din, Kyung Ho Yoo, Daejin Baek, and Chang-Hyun Oh. "Cell-Based Biological Evaluation of a New Bisamide FMS Kinase Inhibitor Possessing Pyrrolo[3,2-c]pyridine Scaffold." Archiv der Pharmazie 347, no. 9 (2014): 635–41. http://dx.doi.org/10.1002/ardp.201400051.

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46

El-Gamal, Mohammed I., Myung-Ho Jung, Woong San Lee, Taebo Sim, Kyung Ho Yoo, and Chang-Hyun Oh. "Design, synthesis, and antiproliferative activity of new 1H-pyrrolo[3,2-c]pyridine derivatives against melanoma cell lines." European Journal of Medicinal Chemistry 46, no. 8 (2011): 3218–26. http://dx.doi.org/10.1016/j.ejmech.2011.04.031.

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47

Kim, Hee Jin, Myung-Ho Jung, Hwan Kim, et al. "Synthesis and antiproliferative activity of pyrrolo[3,2-b]pyridine derivatives against melanoma." Bioorganic & Medicinal Chemistry Letters 20, no. 1 (2010): 413–17. http://dx.doi.org/10.1016/j.bmcl.2009.08.005.

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48

Koreňová, Anna, Alžbeta Krutošíková, Jaroslav Kováč, and Stanislav Celec. "Synthesis and reactions of furo[3,2-c]pyridine derivatives." Collection of Czechoslovak Chemical Communications 52, no. 1 (1987): 192–98. http://dx.doi.org/10.1135/cccc19870192.

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The synthesis of a new type of condensed heterocycle pyrido[3',4':4,5]furo[3,2-b]indole (V) and 1,2,4-triazolo[4'',3'':1',2']pyrido[3',4':4,5]furo[3,2-b]indoles (IX) is described and the substitution nucleophilic reaction with 2-(2-nitrophenyl)-4-chlorofuro[3,2-c]pyridine (X) is presented.
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49

Zhang, Zhiguo, Jingjing Qian, Guisheng Zhang, et al. "Copper(i) catalyzed C(sp2)–N bond formation: synthesis of pyrrolo[3,2-c]quinolinone derivatives." Organic Chemistry Frontiers 3, no. 3 (2016): 344–48. http://dx.doi.org/10.1039/c5qo00417a.

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Abstract:
An intramolecular copper-catalyzed direct C(sp<sup>2</sup>)–H activation/C(sp<sup>2</sup>)–N bond formation reaction has been developed for the synthesis of pyrrolo[3,2-c]quinolinone derivatives under an oxygen atmosphere. This approach presents an alternative route to the tricyclic core of martinellic acid or martinelline.
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50

Laxmi, Dandamudi Sri, Suryadevara V. Vardhini, Venkata R. Guttikonda, Mandava V. B. Rao, and Manojit Pal. "Synthesis of 2-substituted Furo[3,2-b]pyridines Under Pd/C-Cu Catalysis Assisted by Ultrasound: Their Evaluation as Potential Cytotoxic Agents." Anti-Cancer Agents in Medicinal Chemistry 20, no. 8 (2020): 932–40. http://dx.doi.org/10.2174/1871520620666200311102304.

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Abstract:
Background: Compounds containing furo[3,2-b]pyridine framework have shown interesting pharmacological properties, including anticancer activities. Though these compounds are generally synthesized via the heteroannulation processes involving acetylenic derivatives, some of them are complex. Objective: The study aimed to explore a series of 2-substituted furo[3,2-b]pyridines for their cytotoxic properties against cancer cell lines in vitro. Methods: We developed a convenient synthesis of 2-substituted furo[3,2-b]pyridines via sequential (i) C-C coupling followed by (ii) C-O bond-forming reaction
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