A novel hemiterpene glycoside, urceolatoside A (1), together with known two hemiterpene glycosides (2, 3), two triterpenoid saponins (4, 5), and two aromatic compounds (6, 7), was isolated from the bark of Ilex urceolatus, a new species belonging to the genus Ilex. Their structures were elucidated as (2E)-2-methylbut-2-en-4-ol-1-O-[(5″-O-(7″E)-caffeoyl)-β-D-apiofuranosyl]-(1→6)-β-D-glucopyranoside (urceolatoside A) (1), aohada-glucoside C (2), pubescenoside B (3), ilexsaponin B1 (4), ilexsaponin B2 (5), p-hydroxyphenethyl-O-β-D-glucopyranoside (6), and 4-hydroxybenzoic acid (7) by spectroscopic methods. Among them, compound 1 was a novel hemiterpene glycoside; compounds 6 and 7 were isolated from this plant for the first time.
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Acknowledgment
This work was financially supported by National Natural Science Foundation of China (NSFC, Grant No. 31302135), Natural Science Foundation of Jiangsu Province of China (Grant No. BK20130678), a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the China Postdoctoral Science Foundation (Grant No. 2013M531375), Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP, Grant No. 20130097120026), and the Fundamental Research Funds for the Central Universities-Nanjing Agricultural University Youth Science and Technology Innovation Fund (Grant No. KJ2012015).
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Published in Khimiya Prirodnykh Soedinenii, No. 5, September–October, 2015, pp. 757–759.
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Li, Y., Gu, W., Li, H. et al. Chemical Constituents of the Bark of Ilex urceolatus . Chem Nat Compd 51, 882–885 (2015). https://doi.org/10.1007/s10600-015-1439-9
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DOI: https://doi.org/10.1007/s10600-015-1439-9