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Design of antiangiogenic hypoxic cell radiosensitizers: 2-Nitroimidazoles containing a 2-aminomethylene-4-cyclopentene-1,3-dione moiety
- Source :
- Bioorganic & Medicinal Chemistry. 16:6042-6053
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- We designed chiral 2-nitroimidazole derivatives containing a 2-aminomethylene-4-cyclopentene-1,3-dione moiety as antiangiogenic hypoxic cell radiosensitizers. Based on results of molecular orbital calculations, the 2-aminomethylene-4-cyclopentene-1,3-dione moiety is expected to show high electrophilicity comparable to that of the 2-methylene-4-cyclopentene-1,3-dione moiety included in TX-1123 and tyrphostin AG17. We evaluated the antiangiogenic and radiosensitizing effects of the new compounds, along with other biological properties including their activities as hypoxic cytotoxicities and protein tyrosine kinase (PTK) inhibitory activities. Among the compounds tested, 5 (TX-2036) proved to be the strongest antiangiogenic hypoxic cell radiosensitizer. All the other chiral 2-nitroimidazole derivatives having 2-aminomethylene-4-cyclopentene-1,3-dione moiety tested were also antiangiogenic hypoxic cell radiosensitizers. The PTK inhibitory activity of 5 (TX-2036) showed this to be a promising and potent EGFR kinase inhibitor, having an IC(50) value of lower than 2microM. This compound also was an Flt-1 kinase inhibitor having an IC(50) value of lower than 20microM. Our results show that these chiral 2-nitroimidazole derivatives that contain the 2-aminomethylene-4-cyclopentene-1,3-dione moiety as a potent antiangiogenic pharmacophoric descriptor are promising lead candidates for the development of antiangiogenic hypoxic cell radiosensitizers.
- Subjects :
- Models, Molecular
Radiation-Sensitizing Agents
Stereochemistry
Clinical Biochemistry
Nitro compound
Pharmaceutical Science
Angiogenesis Inhibitors
Antineoplastic Agents
Stereoisomerism
Chick Embryo
Cyclopentanes
Biochemistry
Chemical synthesis
Article
Cell Line
Mice
Cell Line, Tumor
Drug Discovery
Animals
Moiety
Protein Kinase Inhibitors
Molecular Biology
Cell Proliferation
chemistry.chemical_classification
Cell growth
Organic Chemistry
Biological activity
Cell Hypoxia
Rats
chemistry
Nitroimidazoles
Drug Design
Molecular Medicine
Radiosensitizing Agent
Tyrosine kinase
Subjects
Details
- ISSN :
- 09680896
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Bioorganic & Medicinal Chemistry
- Accession number :
- edsair.doi.dedup.....2cfd33b30884eb2c0e65e0259b14847e