Sesquiterpenes from Onopordum illyricum and their antifeedant activity.
Phytochemical investigation of the acetone extract of the aerial parts of Onopordum illyricum L. afforded five known sesquiterpenoids: compounds 3 and 4 already isolated from O. illirycum, and 8alpha-[4'-hydroxymethacryloyloxy]-sonchucarpolide (1), 8alpha-[4'-hydroxymethacryloyloxy]-4-epi-sonchucarpolide (2) and 8-(4'-hydroxymethacryloyl)-dehydromelitensin (5), not previously detected in this species. Compounds 4 and 5 showed moderate antifeedant activity against larvae of Spodoptera littoralis.
STEMBIO-Sect. Organic Chemistry, Università di Palermo, Viale delle Scienze, Parco d'Orleasn II, 90128 Palermo, Italy.
Sergio
S
Rosselli
Antonella Maria
AM
Maggio
Marisa
M
Canzoneri
Monique S J
MS
Simmonds
Maurizio
M
Bruno
D000818:Animals; D005247:Feeding Behavior / Q000187:drug effects*; D007814:Larva / Q000187:drug effects; D031183:Onopordum / Q000737:chemistry*; D012717:Sesquiterpenes / Q000494:pharmacology*; D018411:Spodoptera
D012717:Sesquiterpenes