title: Antiproliferative terpenoids and alkaloids from the roots of Maytenus vitis-idaea and Maytenus spinosa.
abstract: Investigation of the organic extracts of the roots of Maytenus vitis-idaea and Maytenus spinosa, collected in the province of Salta, Argentina, led to isolation of eighteen compounds belonging to several classes. From M. vitis-idaea, eight methylenequinone celastroids (1-8) were isolated, four of which (4-7) were hitherto unknown. Additionally, from M. spinosa, two known celastroids, a known celastroid dimer (9), three pentacyclic triterpenoids (10-12) and six β-dihydroagarofuran sesquiterpenoid alkaloids (13-18) were identified. Compounds 4-7 were active against six solid tumor cell lines at micromolar concentrations.
authors.affiliation: UMYMFOR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.
authors.forename: María Tereza Rojo
authors.initials: MT
authors.lastname: de Almeida
authors.forename: Carla
authors.initials: C
authors.lastname: Ríos-Luci
authors.forename: José M
authors.initials: JM
authors.lastname: Padrón
authors.forename: Jorge A
authors.initials: JA
authors.lastname: Palermo
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D001118:Argentina; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D006367:HeLa Cells; D006801:Humans; D029755:Maytenus / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*
chemical_list: D000470:Alkaloids; D000972:Antineoplastic Agents, Phytogenic; D012717:Sesquiterpenes; D014315:Triterpenes