Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials 2016-Jun
[Chemical Constituents of Inula japonica].
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To study the chemical constituents of Inula japonica.
Silica gel, Sephadex LH-20,MCI and semipreparative HPLC were used to isolate and purify the constituents of Inula japonica,and the chemical structures were elucidated by chemical properties, MS and NMR analysis.
14 compounds were isolated and their structures were identified as ivangustin( 1),1-acetoxy-6α-hydroxyeriolanolide( 2), 1β-hydroxyalantolactone( 3),tomentosin( 4),11,13-dihydroinuchinenolide B( 5), britanlin A( 6),vomifoliol( 7), 17-hydroxy-16α-ent-kauran-19-oic acid( 8), 12-hydroxygeranylgeraniol ( 9), dihydroquercetin( 10), kaempferol( 11), quercetin( 12), dihydroconiferyl alcohol( 13) and fareanol( 14).
Compounds 5,6,9,13 and 14 are isolated from this plant for the first time.
