1. Sesquiterpenes, flavonoids, shikimic acid derivatives and pyrrolizidine alkaloids from Senecio kingii Hook.
- Author
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Ruiz-Vásquez, Liliana, Reina, Matías, López-Rodríguez, M., Giménez, Cristina, Cabrera, Raimundo, Cuadra, Pedro, Fajardo, Víctor, and González-Coloma, Azucena
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SESQUITERPENES , *FLAVONOIDS , *SHIKIMIC acid , *PYRROLIZIDINES , *SENECIO , *NUCLEAR magnetic resonance - Abstract
Twenty-four compounds including eleven eremophilanolides ( 1 – 11 ), one eremophilane ( 13 ), five shikimic acid derivatives ( 14 – 18 ), six flavonoids ( 19 – 24 ), and the macrocyclic unsaturated pyrrolizidine alkaloid integerrimine ( 25 ) were isolated from Senecio kingii , an endemic species from the Magallanes Region (Chile). Compounds 3 , 5 , 6 , 8 – 11 and 13 – 18 have not been previously reported as natural products. Their molecular structures were determined by NMR spectroscopic analysis and comparison with published NMR data. An X-ray-analysis of compound 3 has been performed. Their insecticidal and antifungal activities were tested, being compound 3 the strongest insect antifeedant. Compounds 6 , 9 and 18 were moderate antifungals. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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