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Title

Targeted Isolation of Monoterpene Indole Alkaloids from Palicourea sessilis

Authors
Klein-Júnior, Luiz C.
Genta-Jouve, Grégory
Passos, Carolina S.
Salton, Juliana
Bertelli, Pablo
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Published in Journal of Natural Products. 2017, vol. 80, no. 11, p. 3032-3037
Abstract Phytochemical investigation of the alkaloid extract of Palicourea sessilis by LC-HRMS/MS using molecular networking and an in silico MS/MS fragmentation approach suggested the presence of several new monoterpene indole alkaloids. These compounds were isolated by semipreparative HPLC, and their structures confirmed by means of HRMS, NMR, and ECD measurements as 4-N-methyllyaloside (3), 4-N-methyl-3,4-dehydrostrictosidine (4), 4β-hydroxyisodolichantoside (6), and 4α-hydroxyisodolichantoside (7), as well as the known alkaloids alline (1), N-methyltryptamine (2), isodolichantoside (5), and 5-oxodolichantoside (8). In addition, the acetylcholinesterase inhibitory activity of the compounds was evaluated up to 50 μM.
Identifiers
PMID: 29120642
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Structures
Research group Phytochimie et produits naturels bioactifs
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KLEIN-JÚNIOR, Luiz C. et al. Targeted Isolation of Monoterpene Indole Alkaloids from Palicourea sessilis. In: Journal of Natural Products, 2017, vol. 80, n° 11, p. 3032-3037. doi: 10.1021/acs.jnatprod.7b00681 https://archive-ouverte.unige.ch/unige:99707

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Deposited on : 2017-11-27

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