Related Experiment Video
Updated: Jun 19, 2026
05:17
Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
Published on: February 9, 2021
Synthesis and biological evaluation of epothilone A dimeric compounds
Daniele Passarella1, Daniela Comi, Graziella Cappelletti
1Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, Via Venezian 21, Italy. Daniele.Passarella@unimi.it
Bioorganic & Medicinal Chemistry
|October 7, 2009
Summary
Novel dimeric epothilone A derivatives were synthesized and tested. These compounds show potential as anti-cancer agents by inhibiting tubulin polymerization and cancer cell growth, and also affect angiogenesis.
Area of Science:
- Medicinal Chemistry
- Molecular Biology
- Cancer Research
Background:
- Epothilones are potent anti-cancer agents that target tubulin.
- Developing novel epothilone derivatives can overcome resistance and improve efficacy.
- Angiogenesis is crucial for tumor growth and metastasis.
Purpose of the Study:
- To synthesize and biologically evaluate novel dimeric epothilone A derivatives.
- To investigate the impact of these derivatives on tubulin polymerization.
- To assess their anti-cancer activity and anti-angiogenic potential.
Main Methods:
- Synthesis of dimeric epothilone A derivatives using diacyl spacers.
- In vitro assessment of tubulin polymerization inhibition.
- Cytotoxicity assays against four human cancer cell lines.
- Evaluation of endothelial cell differentiation and migration inhibition.
Main Results:
- Successful preparation of six novel dimeric epothilone A derivatives.
- Demonstrated inhibition of tubulin polymerization by tested compounds.
- Significant cytotoxicity observed against tested cancer cell lines.
- Several derivatives effectively inhibited endothelial cell differentiation and migration.
Conclusions:
- The novel dimeric epothilone A derivatives possess potent anti-cancer properties.
- These compounds represent promising leads for developing new anti-cancer therapeutics.
- The observed anti-angiogenic effects warrant further investigation for cancer treatment.
Related Concept Videos
03:00Preparation of Epoxides
Overview
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
02:24Acid-Catalyzed Ring-Opening of Epoxides
Epoxides that are three-membered ring systems are more reactive than other cyclic and acyclic ethers. The high reactivity of epoxides originates from the strain present in the ring. This ring strain acts as a driving force for epoxides to undergo ring-opening reactions either with halogen acids or weak nucleophiles in the presence of mild acid. The acid catalyst converts the epoxide oxygen, a poor leaving group, into an oxonium ion, a better leaving group, making the reaction feasible. The...
02:38Structure and Nomenclature of Epoxides
Cyclic ethers are heterocyclic compounds with an oxygen atom in the ring along with carbon atoms. They are named depending on the number of carbon atoms present in their ring system. Cyclic ethers with a three-membered ring system are called “oxirane”, four-membered ring systems as “oxetane”, five-membered ring systems as “oxolane”, and six-membered ring systems as “oxane”. The cyclic structure of these rings imposes angle strain, and this strain is more in the ring having a smaller number of...
02:26Base-Catalyzed Ring-Opening of Epoxides
Due to their highly strained structures, epoxides can readily undergo ring-opening reactions through nucleophilic substitution, either in the presence of an acid or a base. The nucleophilic substitution reactions in the presence of acid are called acid-catalyzed ring-opening reactions, and nucleophilic substitution reactions in the presence of a base are called base-catalyzed ring-opening reactions. Epoxides undergo base-catalyzed ring-opening reactions in the presence of a strong nucleophile...