Results 1 to 10 of about 750 (158)

Spirooxindole: A Versatile Biologically Active Heterocyclic Scaffold

open access: yesMolecules, 2023
Spirooxindoles occupy an important place in heterocyclic chemistry. Many natural spirooxindole-containing compounds have been identified as bio-promising agents. Synthetic analogs have also been synthesized utilizing different pathways.
Siva S Panda   +2 more
exaly   +5 more sources

Electrochemical synthesis of spirooxindole-pyranopyrazole and spirooxindole-chromene derivatives as inhibitors of acetylcholinesterase [PDF]

open access: yesBMC Chemistry
An efficient, reliable, and cost-effective approach was applied for the electrochemical synthesis of spirooxindole-pyranopyrazole and spirooxindole-chromene derivatives.
Reem M. Elsapagh   +3 more
doaj   +4 more sources

Nanoformulation of Spirooxindole and Methods for Treating Hepatocellular Carcinoma [PDF]

open access: yesPharmaceutics
Objectives: This in vivo study introduces a newly developed spirooxindole derivative that is deemed safe and effective as a potential targeted therapy for various cancers.
Assem Barakat   +6 more
doaj   +4 more sources

Synthesis and structural elucidation of a novel bis-spirooxindole from isatin and ethylenediamine [PDF]

open access: yesBeilstein Journal of Organic Chemistry
The reactivity of isatin toward ethylenediamine displays an unexpected stoichiometric divergence, affording either the anticipated diiminoisatin or a previously unreported pentacyclic bis-spirooxindole.
Irene Moreno-Gutiérrez   +7 more
doaj   +2 more sources

Stereoselective Synthesis of the Di-Spirooxindole Analogs Based Oxindole and Cyclohexanone Moieties as Potential Anticancer Agents

open access: yesMolecules, 2021
A new series of di-spirooxindole analogs, engrafted with oxindole and cyclohexanone moieties, were synthesized. Initially, azomethine ylides were generated via reaction of the substituted isatins 3a–f (isatin, 3a, 6-chloroisatin, 3b, 5-fluoroisatin, 3c ...
Abdullah Mohammed Al-Majid   +2 more
exaly   +3 more sources

Novel spirooxindole-triazole derivatives: unveiling [3+2] cycloaddition reactivity through molecular electron density theory and investigating their potential cytotoxicity against HepG2 and MDA-MB-231 cell lines [PDF]

open access: yesFrontiers in Chemistry
A novel analogue of hybrid spirooxindoles was synthesized employing a systematic multistep synthetic approach. The synthetic protocol was designed to obtain a series of spirooxindole derivatives incorporating triazolyl-s-triazine framework via [3 + 2 ...
Ihab Shawish   +11 more
doaj   +2 more sources

The Therapeutic Potential of Spirooxindoles in Cancer: A Focus on p53–MDM2 Modulation [PDF]

open access: yesPharmaceuticals
The p53, often referred to as the “guardian of the genome”, is a well-established tumor-suppressor protein that plays a critical role in regulating the cell cycle, DNA repair, differentiation, and apoptosis, with its activity primarily modulated by the ...
Adel S. Girgis   +8 more
doaj   +2 more sources

Activation of p53 signaling and regression of breast and prostate carcinoma cells by spirooxindole-benzimidazole small molecules [PDF]

open access: yesFrontiers in Pharmacology
This study discusses the synthesis and use of a new library of spirooxindole-benzimidazole compounds as inhibitors of the signal transducer and activator of p53, a protein involved in regulating cell growth and cancer prevention.
Assem Barakat   +8 more
doaj   +2 more sources

Discovery of a cytochrome P450 enzyme catalyzing the formation of spirooxindole alkaloid scaffold

open access: yesFrontiers in Plant Science, 2023
Spirooxindole alkaloids feature a unique scaffold of an oxindole ring sharing an atom with a heterocyclic moiety. These compounds display an extensive range of biological activities such as anticancer, antibiotics, and anti-hypertension.
Tuan-Anh M. Nguyen   +5 more
doaj   +1 more source

Structural basis of the stereoselective formation of the spirooxindole ring in the biosynthesis of citrinadins

open access: yesNature Communications, 2021
Prenylated indole alkaloids contain spirooxindole rings with a 3R or 3S carbon stereocenter, which determines their bioactivities, but the biocatalytic mechanism controlling the 3R- or 3S-spirooxindole formation was unclear.
Zhiwen Liu   +12 more
doaj   +1 more source

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