ORIGINAL ARTICLES |
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Artificial Triterpenoid Fatty Acid Ester Isolated From the Leaves of Phytolacca icosandra L |
Elier Galarraga1, Andersson Mavares1, Neudo Urdaneta1, Rafael E. Rodríguez-Lugo1,2, Juan Manuel Amaro-Luis3 |
1 Departamento de Química. Edificio de Química Y Procesos, Universidad Simón Bolívar(USB), Apartado 89000. Caracas-1080A, Venezuela, USA; 2 Laboratorio de Química Bioinorgánica, Centro de Química, Instituto Venezolano de Investigaciones Científicas(IVIC), Venezuela, Caracas 1020-A, USA |
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Abstract The methanol extract form the leaves of Phytolacca icosandra L., afforded the unprecedented artificial triterpenoid fatty acid ester 1 derived from the new natural triterpenoid phytolaccagenic acid 3-O-myristate (1a), along with the three known triterpenoids serjanic, acinosolic and phytolaccagenic acid (2-4). Their structures were stablished by HR-EI-MS, 1D and 2D NMR techniques. The possible mechanistic formation of 1 is proposed, and the in vitro toxicity of all compounds was assessed using the brine shrimp lethality assay (BSLA).
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Keywords
Phytolacca icosandra
triterpenoid
fatty acid ester
NMR
artificial products
BSLA
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Fund:The authors would like to thank USB-DID (project S1-IC-CB-004-15) for financial support. Also thanks are expressed to Ing. For. Juan A. Carmona Arzola (ULA) for plant identification. |
Corresponding Authors:
Elier Galarraga
E-mail: eliergalarraga@usb.ve
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Issue Date: 19 August 2020
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