Pyrrolizidine alkaloids from Heliotropium megalanthum.
Two pyrrolizidine alkaloids, megalanthonine (1) and lycopsamine (2), have been isolated from Heliotropium megalanthum. The structure of the novel compound 1 was determined by spectroscopic methods. The insecticidal, antifeedant, and antifungal effects of compounds 1 and 2 have been evaluated.
Reina
M
M
Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, La Laguna, Tenerife, Spain. mreina@ipna.csic.es
Gonzalez-Coloma
A
A
Gutierrez
C
C
Cabrera
R
R
Henriquez
J
J
Villarroel
L
L
D000818:Animals; D000935:Antifungal Agents / Q000302:isolation & purification* / Q000494:pharmacology; D002855:Chromatography, Thin Layer; D005247:Feeding Behavior / Q000187:drug effects; D007306:Insecticides / Q000302:isolation & purification*; D007814:Larva; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010944:Plants; D011763:Pyrrolizidine Alkaloids / Q000302:isolation & purification / Q000494:pharmacology*; D018411:Spodoptera
D000935:Antifungal Agents; D007306:Insecticides; D011763:Pyrrolizidine Alkaloids; C117182:megalanthonine; C018336:indicine