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Chemical compound From Wikipedia, the free encyclopedia
Alstonine is a pentacyclic alkaloid and putative antipsychotic constituent of various plant species including Alstonia boonei, Catharanthus roseus, Picralima nitida, Rauwolfia caffra and Rauwolfia vomitoria.[1] In preclinical studies alstonine attenuates MK-801-induced hyperlocomotion, working memory deficit and social withdrawal.[2] It also possesses anxiolytic-like effects in preclinical studies,[1] attenuates amphetamine-induced lethality and stereotypy as well as apomorphine-induced stereotypy,[1] and attenuates haloperidol-induced catalepsy.[3] These effects appear to be mediated by stimulation of the 5-HT2C receptor.[4] In addition, alstonine, similarly to clozapine, indirectly inhibits the reuptake of glutamate in hippocampal slices.[5] Unlike clozapine however, the effect of which is abolished by the D2 receptor agonist apomorphine, alstonine requires 5-HT2A and 5-HT2C receptors to produce this effect, as it is abolished by antagonists of these receptors. Also unlike clozapine, alstonine lacks pro-convulsant activity in mice.[6]
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Formula | C21H21N2O3 |
Molar mass | 349.410 g·mol−1 |
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