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Relevant bibliographies by topics / Polyheterocyclics

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Journal articles

Academic literature on the topic 'Polyheterocyclics'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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Journal articles on the topic "Polyheterocyclics"

1

Lebedev, Rodion, Dmitry Dar’in, Grigory Kantin, Olga Bakulina, and Mikhail Krasavin. "One-Pot Sequence of Staudinger/aza-Wittig/Castagnoli–Cushman Reactions Provides Facile Access to Novel Natural-like Polycyclic Ring Systems." Molecules 27, no. 23 (2022): 8130. http://dx.doi.org/10.3390/molecules27238130.

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Realization of the one-pot Staudinger/aza-Wittig/Castagnoli–Cushman reaction sequence for a series of azido aldehydes and homophthalic anhydrides is described. The reaction proceeded at room temperature and delivered novel polyheterocycles related to the natural product realm in high yields and high diastereoselectivity. The methodology has been extended to three other cyclic anhydrides. These further unravel the potential of the Castagnoli–Cushman reaction in generating polyheterocyclic molecular scaffolds.

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2

Blanco-Carapia, Roberto E., Enrique A. Aguilar-Rangel, Mónica A. Rincón-Guevara, Alejandro Islas-Jácome, and Eduardo González-Zamora. "Synthesis of New Polyheterocyclic Pyrrolo[3,4-b]pyridin-5-ones via an Ugi-Zhu/Cascade/Click Strategy." Molecules 28, no. 10 (2023): 4087. http://dx.doi.org/10.3390/molecules28104087.

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A diversity-oriented synthesis (DOS) of two new polyheterocyclic compounds was performed via an Ugi-Zhu/cascade (N-acylation/aza Diels-Alder cycloaddition/decarboxylation/dehydration)/click strategy, both step-by-step to optimize all involved experimental stages, and in one pot manner to evaluate the scope and sustainability of this polyheterocyclic-focused synthetic strategy. In both ways, the yields were excellent, considering the high number of bonds formed with release of only one carbon dioxide and two molecules of water. The Ugi-Zhu reaction was carried out using the 4-formylbenzonitrile

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3

Beduru, Srinivas, and Andrei G. Kutateladze. "Complexity-Building ESIPT-Assisted Synthesis of Fused Polyheterocyclic Sulfonamides." Molecules 28, no. 18 (2023): 6549. http://dx.doi.org/10.3390/molecules28186549.

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Excited State Intramolecular Proton Transfer (ESIPT), originally discovered and explored in depth in a number of extensive photophysical studies, is more recently rediscovered as a powerful synthetic tool, offering rapid access to complex polyheterocycles. In our prior work we have employed ESIPT in aromatic o-keto amines and amides, leading to diverse primary photoproducts—complex quinolinols or azacanes possessing a fused lactam moiety—which could additionally be modified in short, high-yielding postphotochemical reactions to further grow complexity of the heterocyclic core scaffold and/or t

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4

Horsten, Tomas, and Wim Dehaen. "4,5,6,7-Tetrahydroindol-4-Ones as a Valuable Starting Point for the Synthesis of Polyheterocyclic Structures." Molecules 26, no. 15 (2021): 4596. http://dx.doi.org/10.3390/molecules26154596.

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This review focuses on the synthesis of polyheterocyclic structures with a variety of medicinal and optoelectronic applications, starting from readily available 4,5,6,7-tetrahydroindol-4-one analogs. First, routes toward the 4,5,6,7-tetrahydroindol-4-one starting materials are summarized, followed by synthetic pathways towards polyheterocyclic structures which are categorized based on the size and attachment point of the newly formed (hetero)cyclic ring.

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5

Aksenov, Nicolai A., Alexander V. Aksenov, Nikita K. Kirilov, et al. "Nitroalkanes as electrophiles: synthesis of triazole-fused heterocycles with neuroblastoma differentiation activity." Organic & Biomolecular Chemistry 18, no. 34 (2020): 6651–64. http://dx.doi.org/10.1039/d0ob01007c.

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6

Li, Yunhe, та Xiang Zhao. "Gold-catalyzed domino cyclization to diverse polyheterocyclic frameworks: mechanism, origin of the cooperative hydrogen bond, and role of π-stacking interactions". Catalysis Science & Technology 10, № 12 (2020): 4109–18. http://dx.doi.org/10.1039/d0cy00746c.

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7

Barroso, Raquel, María-Paz Cabal, Azucena Jiménez, and Carlos Valdés. "Cascade and multicomponent synthesis of structurally diverse 2-(pyrazol-3-yl)pyridines and polysubstituted pyrazoles." Organic & Biomolecular Chemistry 18, no. 8 (2020): 1629–36. http://dx.doi.org/10.1039/c9ob02691f.

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A wide diversity of polyheterocyclic systems including polysubstituted pyrazoles and pyridopyrazole polydentate ligands are readily assembled through cascade multicomponent processes from terminal alkynes and N-tosylhydrazones.

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8

Li, Yunhe, and Xiang Zhao. "Assessing counterion effects in gold-catalyzed domino spirocyclization: an industrial perspective on hydrogen bonding." Physical Chemistry Chemical Physics 22, no. 35 (2020): 19606–12. http://dx.doi.org/10.1039/d0cp03367g.

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Different roles of some hydrogen bonding in gold-catalyzed ipso-cyclization to diverse polyheterocyclic frameworks are exposed. The correlation between hydrogen bonding parameters and chemoselectivity is determined.

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9

Palanivel, Lakshmanan, and Vasuki Gnanasambandam. "Diversity oriented multi-component reaction (DOS–MCR) approach to access natural product analogues: regio- and chemo-selective synthesis of polyheterocyclic scaffolds via one-pot cascade reactions." Organic & Biomolecular Chemistry 18, no. 16 (2020): 3082–92. http://dx.doi.org/10.1039/d0ob00368a.

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10

García-González, Ma Carmen, Eduardo Hernández-Vázquez, Raúl E. Gordillo-Cruz, and Luis D. Miranda. "Ugi-derived dehydroalanines as a pivotal template in the diversity oriented synthesis of aza-polyheterocycles." Chemical Communications 51, no. 58 (2015): 11669–72. http://dx.doi.org/10.1039/c5cc02927a.

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Various readily available, Ugi-derived dehydroalanines were used as pivotal templates to easily and efficiently assemble diverse pharmacologically important polyheterocyclic systems through cascade palladium-catalyzed C–C bond formation processes.

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