Results 21 to 30 of about 31,966 (258)

Synthetic Routes to Coumarin(Benzopyrone)-Fused Five-Membered Aromatic Heterocycles Built on the α-Pyrone Moiety. Part 1: Five-Membered Aromatic Rings with One Heteroatom

open access: yesMolecules, 2021
This review gives an up-to-date overview of the different ways (routes) to the synthesis of coumarin(benzopyrone)-fused, five-membered aromatic heterocycles with one heteroatom, built on the pyrone moiety. Covering 1966 to 2020.
Eslam Reda El-Sawy   +2 more
doaj   +1 more source

The Synthesis and Properties of Ladder-Type π-Conjugated Compounds with Pyrrole and Phosphole Rings

open access: yesMolecules, 2023
The phosphole ring is known as a useful building block for constructing π-conjugated organic materials. Here, we report ladder-type benzophospholo[3,2-b]indole (BPI) derivatives where the phosphole and the pyrrole rings are directly fused.
Minh Anh Truong   +3 more
doaj   +1 more source

Vibrations of pyrrole, N-substituted pyrroles, and their cations

open access: yesJournal of Molecular Spectroscopy, 2021
The vibrations of pyrrole, N-deuteropyrrole, N-fluoropyrrole, N-aminopyrrole and N-methylpyrrole are studied. The evolution of the vibrational wavenumbers of pyrrole is examined, as the mass of the nitrogen-bonded hydrogen atom is artificially increased.
Alexander R. Davies   +2 more
openaire   +1 more source

The Adductomics of Isolevuglandins: Oxidation of IsoLG Pyrrole Intermediates Generates Pyrrole–Pyrrole Crosslinks and Lactams [PDF]

open access: yesHigh-Throughput, 2019
Isoprostane endoperoxides generated by free radical-induced oxidation of arachidonates, and prostaglandin endoperoxides generated through enzymatic cyclooxygenation of arachidonate, rearrange nonenzymatically to isoprostanes and a family of stereo and structurally isomeric γ-ketoaldehyde seco-isoprostanes, collectively known as isolevuglandins (isoLGs).
Wenzhao Bi   +6 more
openaire   +2 more sources

Synthesis of novel pyrroles and fused pyrroles as antifungal and antibacterial agents [PDF]

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2021
Pyrroles and its fused forms possess antimicrobial activities, they can easily interact with biomolecules of living systems. A series of substituted pyrroles, and its fused pyrimidines and triazines forms have been synthesised, all newly synthesised compound structures were confirmed by spectroscopic analysis.
Rania Helmy Abd El-Hameed   +5 more
openaire   +3 more sources

Pyrrole-Based Conjugated Microporous Polymers as Efficient Heterogeneous Catalysts for Knoevenagel Condensation

open access: yesFrontiers in Chemistry, 2021
Conjugated microporous polymers (CMPs) with robust architectures, facilely tunable pore sizes and large specific surface areas have emerged as an important class of porous materials due to their demonstrated prospects in various fields, e.g.
Ruidong Gao   +5 more
doaj   +1 more source

Derivatives Incorporating Acridine, Pyrrole, and Thiazolidine Rings as Promising Antitumor Agents

open access: yesMolecules, 2023
Derivatives combining acridine, pyrrole, and thiazolidine rings have emerged as promising candidates in the field of antitumor drug discovery. This paper aims to highlight the importance of these three structural motifs in developing potent and selective
Monika Garberová   +11 more
doaj   +1 more source

The first direct synthesis of β-unsubstituted meso-decamethylcalix[5]pyrrole

open access: yesBeilstein Journal of Organic Chemistry, 2009
The first direct synthesis of β-unsubstituted meso-decamethylcalix[5]pyrrole from pyrrole and acetone, with moderate yield, is described. The results showed that a bismuth salt was necessary to obtain calix[5]pyrrole, with the best results obtained using
Luis Chacón-García   +3 more
doaj   +1 more source

Spiroheterocyclization of Methyl 1-Aryl-3-cinnamoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates by the Action of 3-(Arylamino)-1H-inden-1-ones

open access: yesMolecules, 2012
Methyl 1-aryl-3-cinnamoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates interact with 3-(arylamino)-1H-inden-1-ones to give the corresponding 1,1'-diaryl-3'-cinnamoyl-4'-hydroxy-1H-spiro[indeno[1,2-b]pyrrole-3,2'-pyrrole]-2,4,5'
Аndrey N. Maslivets   +3 more
doaj   +1 more source

Pyrroles as Privileged Scaffolds in the Search for New Potential HIV Inhibitors

open access: yesPharmaceuticals, 2021
Acquired immunodeficiency syndrome (AIDS) is caused by human immunodeficiency virus (HIV) and remains a global health problem four decades after the report of its first case.
Maria da Conceição Avelino Dias Bianco   +4 more
doaj   +1 more source

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