Archives of Pharmacal Research 2004-Oct
Phytochemical constituents of Carpesium macrocephalum F(R). et S(AV).
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From the methanol extract of the whole plants of Carpesium macrocephalum F(R). et S(AV)., five sesquiterpene lactones (1: carabron, 2: tomentosin, 3: ivalin, 4: 4H-tomentosin, 5: carabrol) and three terpenoids (6: loliolide, 7: vomifoliol, 8: citrusin C) were isolated. The structures and stereochemistry of compounds 1-8 were established on the basis of chemical analysis as well as 1D- and 2D-NMR spectroscopy. Among them, compounds 2, 4, and 6-8 were isolated for the first time from Carpesium species.