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Harrison ST, Mulhearn J, Wolkenberg SE, Miller PJ, O’Malley SS, Zeng Z, Williams DL, Hostetler ED, Sanabria-Bohórquez S, Gammage L, Fan H, Sur C, Culberson JC, Hargreaves RJ, Cook JJ, Hartman GD, Barrow JC. Synthesis and Evaluation of 5-Fluoro-2-aryl oxazolo[5,4-b]pyridines as β-Amyloid PET Ligands and Identification of MK-3328. ACS Med Chem Lett 2011; 2:498-502. [PMID: 24900338 DOI: 10.1021/ml200018n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 03/15/2011] [Indexed: 11/29/2022] Open
Abstract
5-Fluoro-2-aryloxazolo[5,4-b]pyridines were synthesized and investigated as potential (18)F containing β-amyloid PET ligands. In competition binding assays using human AD brain homogenates, compounds 14b, 16b, and 17b were identified as having favorable potency versus human β-amyloid plaque and were radiolabeled for further evaluation in in vitro binding and in vivo PET imaging experiments. These studies led to the identification of 17b (MK-3328) as a candidate PET ligand for the clinical assessment of β-amyloid plaque load.
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Affiliation(s)
- Scott T. Harrison
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - James Mulhearn
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Scott E. Wolkenberg
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Patricia J. Miller
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Stacey S. O’Malley
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Zhizhen Zeng
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - David L. Williams
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Eric D. Hostetler
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Sandra Sanabria-Bohórquez
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Linda Gammage
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Hong Fan
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Cyrille Sur
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - J. Christopher Culberson
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Richard J. Hargreaves
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - Jacquelynn J. Cook
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - George D. Hartman
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
| | - James C. Barrow
- Departments of Medicinal Chemistry, ‡Imaging, and §Chemical Modeling and Informatics, Merck Research Laboratories, Merck & Co., Inc., P.O. Box 4, West Point, Pennsylvania 19486, United States
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