期刊
MAGNETIC RESONANCE IN CHEMISTRY
卷 49, 期 11, 页码 753-756出版社
WILEY-BLACKWELL
DOI: 10.1002/mrc.2801
关键词
(1)H NMR; (13)C NMR; two-dimensional NMR; Picris conyzoides; Asteraceae; sesquiterpene lactones; glycosides
Complete (1)H and (13)C NMR signal assignments of two lactucin-type sesquiterpene lactone glycosides, derivatives of 11 beta, 13-dihydrolactucin, isolated from roots of Picris conyzoides, were achieved by one- and two-dimensional NMR experiments, allowing the correction of previously published data for cichorioside B and the structure elucidation of its new ester with 3-hydroxy-2-methylpropanoic acid. In addition, seven known sesquiterpene lactones and three phenolic compounds were isolated from the plant material. Copyright (C) 2011 John Wiley & Sons, Ltd.
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