Linarin
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | Linarin | ||||||||||||||||||
other names |
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Molecular formula | C 28 H 32 O 14 | ||||||||||||||||||
Brief description |
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properties | |||||||||||||||||||
Molar mass | 592.54 g · mol -1 | ||||||||||||||||||
Physical state |
firmly |
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Melting point |
Decomposition from 265 ° C |
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solubility |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Linarin is a flavonoid that has so far been identified in various plants such as toadflax , valerian, and field mint .
Like other flavonoid glycosides, it could serve as a repellent to protect against eating. While the biological function has not yet been investigated in detail, several pharmacological studies are available.
Pharmacological importance
Linarin is being discussed as a possible new active ingredient for the treatment of Alzheimer's disease . The compound activates enzymes of neuroprotective signal transduction (PI3K / Akt pathway), which counteracts neurotoxicity that occurs in Alzheimer's patients and is induced by the peptide Aβ (25-35).
At the same time, linarin is an inhibitor of acetylcholinesterase and thus causes an increase in the concentration and longer retention time of the neurotransmitter acetylcholine in the synaptic gap . Acetylcholinesterase inhibitors are u. a. used as active ingredients to treat Alzheimer's , glaucoma (glaucoma) or myasthenia gravis . In addition, linarin has been shown to have a sedative effect.
Individual evidence
- ↑ a b c data sheet from Extrasynthesis ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ a b c d K. W. Merz, YH Wu: About the glycosides of the flowers of Linaria vulgaris L .: The constitution of linarin and pectolin . In: Archives of Pharmacy . tape 274 , no. January 2 , 1936, p. 126-148 , doi : 10.1002 / ardp.19362740205 .
- ↑ Haiyan Lou, Peihong Fan, Ruth G. Perez, Hongxiang Lou: Neuroprotective effects of linarin through activation of the PI3K / Akt pathway in amyloid-β-induced neuronal cell death . In: Bioorganic & Medicinal Chemistry . tape 19 , no. 13 , July 2011, p. 4021-4027 , doi : 10.1016 / j.bmc.2011.05.021 .
- ↑ S. Fernández, C. Wasowski, AC Paladini, M. Marder: Sedative and sleep-enhancing properties of linarin, a flavonoid-isolated from Valeriana officinalis. In: Pharmacol Biochem Behav 77 (2), 2004: pp. 399-404.