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论文类型：期刊论文

发表时间：2009-10-01

发表刊物：MAGNETIC RESONANCE IN CHEMISTRY

收录刊物：SCIE、Scopus

卷号：47

期号：10

页面范围：902-908

ISSN号：0749-1581

关键字：NMR; (1)H; (13)C; 2D NMR; curcuminoids; Curcuma longa; structure elucidation

摘要：Thirteen curcuminoids (1-13) were isolated from the rhizomes of Curcuma longa. Among them, 1,5-dihydroxy-1,7-bis(4-hydroxyphenyl)-4,6-heptadiene-3-one (1), 1,5-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)-4,6-heptadiene-3-one (2), 1,5-dihydroxy-1-(4-hydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)-4,6-heptadiene-3-one (3), and 3-hydroxy-1,7-bis-(4-hydroxyphenyl)-6-heptene-1,5-dione (4) are new compounds, and 1-(4-hydroxyphenyl)-7-(3, 4-dihydroxyphenyl)-1, 6-heptadiene-3, 5-dione (5) is isolated from natural sources for the first time. The structures of these compounds were elucidated by extensive spectroscopic analyses, especially 1D and 2D NMR spectroscopy. The (13)C NMR data and complete (1H) and (13)C NMR assignments of some known compounds are reported for the first time. In addition, the errors of (1)H and (13)C assignments reported in the literature were corrected. Copyright (C) 2009 John Wiley & Sons, Ltd.