Cytotoxic Acetogenins from the Roots of Annona purpurea

Autor: Francisco J. Martínez-Martínez, Antonio Toninello, Ivan Delgado-Enciso, Aída Nelly García-Argáez, Gustavo Alejandro Hernández-Fuentes, Zeferino Gómez-Sandoval, Ana Lilia Peraza Campos, Hortensia Parra-Delgado, Lisa Dalla Via, Roberto Muñiz-Valencia, Juan Pablo Mojica-Sánchez
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Molecular Sciences, Vol 20, Iss 8, p 1870 (2019)
International Journal of Molecular Sciences
Volume 20
Issue 8
ISSN: 1422-0067
Popis: Annona purpurea, known in Mexico as “cabeza de negro” or “ilama”, belongs to the Annonaceae family. Its roots are employed in folk medicine in several regions of Mexico. Taking that information into account, a chemical and biological analysis of the components present in the roots of this species was proposed. Our results demonstrated that the dichloromethane (DCM) extract was exclusively constituted by a mixture of five new acetogenins named annopurpuricins A–E (1–5). These compounds have an aliphatic chain of 37 carbons with a terminal α,β unsaturated γ-lactone. Compounds 1 and 2 belong to the adjacent bis-THF (tetrahydrofuran) α-monohydroxylated type, while compounds 3 and 4 belong to the adjacent bis-THF α,α’-dihydroxylated type
only compound 5 possesses a bis-epoxide system. Complete structure analysis was carried out by spectroscopy and chemical methods. All compounds were evaluated for their antiproliferative activity on three human tumor cell lines (MSTO-211H, HeLa and HepG2). Compounds 1–4 inhibited significantly the growth of HeLa and HepG2 cells, showing GI50 values in the low/subnanomolar range, while 5 was completely ineffective under the tested conditions. The investigation of the mechanism of action responsible for cytotoxicity revealed for the most interesting compound 1 the ability to block the complex I activity on isolated rat liver mitochondria (RLM).
Databáze: OpenAIRE
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