(3R,5S,7as)-(3,5-Bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol, a Novel Neuroprotective Agent

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• 作者：Kelly E. Desino ; Sabah Ansar ; Gunda I. Georg ; Richard H. Himes ; Mary Lou Michaelis ; Douglas R. Powell ; Emily A. Reiff ; Hanumaiah Telikepalli ; Kenneth L. Audus
• 刊名：Journal of Medicinal Chemistry
• 出版年：2009
• 出版时间：December 10, 2009
• 年：2009
• 卷：52
• 期：23
• 页码：7537-7543
• 全文大小：819K
• 年卷期：v.52,no.23(December 10, 2009)
• ISSN：1520-4804

文摘

Compounds that interact with microtubules, such as paclitaxel, have been shown to possess protective properties against β-amyloid (Aβ) induced neurodegeneration associated with Alzheimer’s disease. In this work, the novel agent (3R,5S,7as)-(3,5-bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol was investigated for effectiveness in protecting neurons against several toxic stimuli and its interaction with the microtubule network. Exposure of neuronal cultures to Aβ peptide in the presence of 5 nM (3R,5S,7as)-(3,5-bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol resulted in a 50% increase in survival. Neuronal cultures treated with other toxic stimuli such as staurosporine, thapsigargin, paraquat, and H₂O₂ showed significantly enhanced survival in the presence of (3R,5S,7as)-(3,5-bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol. Microtubule binding and tubulin assembly studies revealed differences compared to paclitaxel but confirmed the interaction of (3R,5S,7as)-(3,5-bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol with microtubules. Furthermore, in vitro studies using bovine brain microvessel endothelial cells experiments suggest that (3R,5S,7as)-(3,5-bis(4-fluorophenyl)tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol can readily cross the blood−brain barrier in a passive manner.