ChemInform Abstract: Germacranolides and Their Diversity of Eupatorium heterophyllum Collected in P. R. China.

Abstract

Germacranolides and Their Diversity of Eupatorium heterophyllum Collected in P. R. China. -[isolation and structure elucidation of 8 new hydroperoxyheterophyllin A-H (I)-(V) and one ketoheterophyllin A (VI)]. -(SAITO, Y.; MUKAI, T.; IWAMOTO, Y.; BABA, M.; TAKIGUCHI, K.; OKAMOTO, Y.; GONG, X.; KAWAHARA, T.; KURODA, C.; TORI*, M.; Chem. Pharm. Bull. 62 (2014) 11, 1092-1099, http://dx.doi.org/10.1248/cpb.c14-00426 ; Fac. Pharm. Sci., Tokushima Bunri Univ., Yamashiro, Tokushima 770, Japan; Eng.) -M. Bohle 20-266

Dihydrobenzofurans and Propynylthiophenes From the Roots of Eupatorium heterophyllum

“…6 Interestingly, the aerial parts of this plant have been shown to contain mainly sesquiterpenoids and displayed considerable chemical diversity, which was dependent on the collection site. 5 However, our results clearly suggested a lower chemical diversity in the roots. 6 The difference in the chemical diversity between the aerial parts and roots may be important for plant physiology and chemical ecology.…”

“…[2][3][4] The differences in chemical compositions were primarily observed in the above-ground parts. 5 Additionally, an investigation on the roots (underground part) of E. heterophyllum, which were collected from five districts in China showed only small differences in chemical compositions. 6 In this study, we further examined the roots of E. heterophyllum, which were collected from Sichuan, China.…”

Germacranolides and Their Diversity of <i>Eupatorium heterophyllum</i> Collected in P. R. China

“…Compound 1 showed a quasimolecular ion peak at m/z 453 and its molecular formula was determined to be C 22 for carbonyl groups. The 1 H-NMR spectrum indicated the presence of a methyl group attached to the olefinic carbon, an acetyl group, two sets of exomethylene groups, two olefinic protons, four oxymethine protons, and two oxymethylene protons.…”

“…We are interested in biologically active terpenoids from Asteraceae plants and have studied the chemical constituents of Ligularia, [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Saussurea, 22,23) Cremanthodium, [24][25][26][27] and Eupatorium. [28][29][30][31] In our previous study on E. glehnii growing in Japan, especially in Obihiro (Hokkaido), Fujimi-cho (Nagano), and Tokushima, a large diversity in the chemical constituents was found, while there was no diversity in DNA sequences (atpB-rbcL intergenic region).…”

Перспективные Источники Природных Терпеноидов

“…The chemical constituents of Carpesium abrotanoides were investigated as part of the study of the bioactive components of medicinal plants. As a result, three new sesquiterpene lactones were discovered: 5-hydroxy-4,15-epoxy-11H-eudesman-12,8-olid (25), carabrol-4-O-palmitate (26), and carabrol-4-O-linoleate (27), in addition to five known sesquiterpene lactones [29][30][31][32][33]. The isolation and structure elucidation in Figure 9 of these new compounds have been proven by extensive spectroscopic analysis.…”