Results 11 to 20 of about 10,792 (98)

Green Synthesis of Spiro Compounds with Potential Anticancer Activity through Knoevenagel/Michael/Cyclization Multicomponent Domino Reactions Organocatalyzed by Ionic Liquid and Microwave-Assisted [PDF]

open access: yesMolecules, 2022
In this work a microwave-assisted Knoevenagel/Michael/cyclization multicomponent domino methodology, using ethanol as solvent and the ionic liquid 1-methylimidazolium chloride as catalyst was developed for the synthesis of spiro compounds.
Regina Westphal   +11 more
doaj   +2 more sources

Chemistry Teacher Trainees’ use of Molecular Models in Learning Spiro and Bicyclic Compounds

open access: yesScience Education International, 2022
The study diagnosed chemistry teacher trainees’ difficulties in naming and writing structures of spiro and bicyclic compounds. The case study design was conducted in a constructivist environment to enhance chemistry teacher trainees’ ability to construct,
Claudia Quayson   +3 more
doaj   +1 more source

New Methods for the Synthesis of Spirocyclic Cephalosporin Analogues

open access: yesMolecules, 2021
Spiro compounds provide attractive targets in drug discovery due to their inherent three-dimensional structures, which enhance protein interactions, aid solubility and facilitate molecular modelling.
Alan X. Zhao   +2 more
doaj   +1 more source

Spiro-Flavonoids in Nature: A Critical Review of Structural Diversity and Bioactivity

open access: yesMolecules, 2023
Based on the literature data from 1973 to 2022, this work summarizes reports on spiro-flavonoids with a spiro-carbon at the center of their structure and how this affects their isolation methods, stereochemistry, and biological activity.
Łukasz Pecio   +3 more
doaj   +1 more source

Synthesis, antimicrobial activity and molecular docking studies of spiroquinoline-indoline-dione and spiropyrazolo-indoline-dione derivatives

open access: yesScientific Reports, 2023
Spiro[benzo[h]quinoline-7,3′-indoline]diones and spiro[indoline-3,4′-pyrazolo[3,4-b]quinoline]diones were efficiently synthesized via one-pot multi-component reactions under ultrasound-promoted conditions.
Melek Gul   +4 more
doaj   +1 more source

An Efficient Synthesis and Antibacterial Activity of Some Novel 3,4–Dihydropyrimidin-2-(1H)-Ones

open access: yesChemistry Proceedings, 2021
We have efficiently synthesized mono as well as bis and spiro cyclic products of 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) by refluxing a reaction mixture of the three components in deep eutectic solvent (DES) to generating “libraries from libraries ...
Nilesh S. Pawar   +2 more
doaj   +1 more source

Furan-Containing Chiral Spiro-Fused Polycyclic Aromatic Compounds: Synthesis and Photophysical Properties

open access: yesMolecules, 2022
Spiro-fused polycyclic aromatic compounds (PACs) have received growing interest as rigid chiral scaffolds. However, furan-containing spiro-fused PACs have been quite limited.
Koji Nakano, Ko Takase, Keiichi Noguchi
doaj   +1 more source

Synthesis and Characterization of a Three Rings Heterocyclic Spiro Furan and Evaluation of its Cytotoxicity Properties on G-292 Cell Lines [PDF]

open access: yesشیمی کاربردی روز, 2021
Synthesis and study of the medicinal properties of new spiro compounds with various functional groups is of great interest to organic and pharmaceutical researchers because of their special structure and conformation. Multi-component reactions are one of
Mona Besharat   +2 more
doaj   +1 more source

Synthesis and Characterization of New Spiroheterocyclic from Isatin and Evaluation of Some Their Antifungal and Antibacterial Activity [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
Spiro compounds Spiro cycles are widely found in natural products, medicines, and functional materials[1] the spiro atom forces the planes of the two rings to almost face one another, spiro compounds are a desirable subclass of heterocyclic scaffolds. In
Zubaida Al-Heety, Ali Al-Nasseri
doaj   +1 more source

New 6′-Amino-5′-cyano-2-oxo-1,2-dihydro-1′H-spiro[indole-3,4′-pyridine]-3′-carboxamides: Synthesis, Reactions, Molecular Docking Studies and Biological Activity

open access: yesMolecules, 2023
The purpose of this work was to prepare new isatin- and monothiomalondiamide-based indole derivatives, as well as to study the properties of the new compounds.
Victor V. Dotsenko   +5 more
doaj   +1 more source

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