Abstract |
The reference standard CX-6258 {(E)-5-chloro-3-((5-(3-(4-methyl-1,4-diazepane-1-carbonyl)phenyl) furan-2-yl)methylene)indolin-2-one, 4a} and its desmethylated precursor N-desmethyl-CX-6258 {(E)-3-((5-(3-(1,4-diazepane-1-carbonyl)phenyl) furan-2-yl)methylene)-5-chloroindolin-2-one, 5} for radiolabeling were synthesized from 5-bromo-2-furaldehyde and 3-carboxybenzeneboronic acid in 3 and 4 steps with 29-49% and 24-32% overall chemical yield, respectively. The target tracer [(11)C]CX-6258 {(E)-5-chloro-3-((5-(3-(4-[(11)C]methyl-1,4-diazepane-1-carbonyl)phenyl) furan-2-yl)methylene)indolin-2-one, [(11)C]4a} was prepared from N-desmethyl-CX-6258 (5) with [(11)C]CH3OTf under basic condition (2N NaOH) through N-[(11)C]methylation and isolated by HPLC combined with solid-phase extraction (SPE) in 40-50% radiochemical yield based on [(11)C]CO2 and decay corrected to end of bombardment (EOB) with 370-1110GBq/μmol specific activity at EOB.
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Authors | Min Wang, Reynaldo Tzintzun, Mingzhang Gao, Zhidong Xu, Qi-Huang Zheng |
Journal | Bioorganic & medicinal chemistry letters
(Bioorg Med Chem Lett)
Vol. 25
Issue 18
Pg. 3831-5
(Sep 15 2015)
ISSN: 1464-3405 [Electronic] England |
PMID | 26227775
(Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S.)
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Copyright | Copyright © 2015 Elsevier Ltd. All rights reserved. |
Chemical References |
- Azepines
- CX-6258
- Carbon Radioisotopes
- Indoles
- Radiopharmaceuticals
- Proto-Oncogene Proteins c-pim-1
- proto-oncogene proteins pim
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Topics |
- Azepines
(chemical synthesis, chemistry, pharmacology)
- Carbon Radioisotopes
- Chromatography, High Pressure Liquid
- Humans
- Indoles
(chemical synthesis, chemistry, pharmacology)
- Molecular Structure
- Neoplasms
(diagnostic imaging, enzymology)
- Positron-Emission Tomography
- Proto-Oncogene Proteins c-pim-1
(metabolism)
- Radiopharmaceuticals
(chemical synthesis, chemistry, pharmacology)
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