期刊
JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH
卷 19, 期 1, 页码 1-8出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10286020.2016.1241771
关键词
Justicia procumbens; Acanthaceae; lignan glycosides; sesquilignan glycoside; conformational equilibria
Four new lignan glycosides (1-4), named procumbenosides I, K, L, and M, together with cleistanthin B (5) reported for the first time in the genus Justicia, and 5 other known arylnaphthalene lignan glycosides (6-10) were isolated from the whole plant of Justicia procumbens. The structures of the new compounds were elucidated by extensive one-dimensional (1D) and two-dimensional (2D) NMR experiments and mass spectrometry. Procumbenoside M (4) was a rare sesquilignan glycoside never previously reported in the species of Justicia. The paper also provided insight into the conformational equilibria existing in the lignan glycosides of the plant.
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