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The brazilian Amaryllidaceae as a source of acetylcholinesterase inhibitory alkaloids

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Nine Brazilian Amaryllidaceae species were studied for their alkaloid composition and acetylcholinesterase (AChE) inhibitory activity via GC-MS and a modified Ellman assay, respectively. A total of thirty-six alkaloids were identified in these plants, of which Hippeastrum papilio and H. glau-cescens exhibited the highest galanthamine content and the best IC50 values against AChE. Furthermore, Hippeastrum vittatum and Rhodophiala bifida also showed notable AChE inhibitory effects. X-ray crys-tallographic data for four galanthamine-type com-pounds revealed significant differences in the orientation of theN-methyl group, which are shown to be related to AChE inhibition.

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PAULO DE ANDRADE, Jean, et al. The brazilian Amaryllidaceae as a source of acetylcholinesterase inhibitory alkaloids. Phytochemistry Reviews. 2016. Vol. 15, núm. 1, pàgs. 147-160. ISSN 1568-7767. [consulta: 11 de maig de 2026]. Disponible a: https://hdl.handle.net/2445/163721

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