Isolation of the triterpenes from Eriobotrya japonicaleaves

CHEN Huan;CHEN Guang;REN HongMei;YANG QuanHua;YU ChangYuan

Journal of Beijing University of Chemical Technology ›› 2012, Vol. 39 ›› Issue (3) : 40-45.

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Journal of Beijing University of Chemical Technology ›› 2012, Vol. 39 ›› Issue (3) : 40-45.
化学与化学工程

Isolation of the triterpenes from Eriobotrya japonicaleaves

  • CHEN Huan;CHEN Guang;REN HongMei;YANG QuanHua;YU ChangYuan
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Abstract

The chemical constituents of Eriobotrya japonica were isolated and purified by various chromatographic methods, and their structures were identified by analysis of spectral data and physicochemical properties. Thirteen compounds were obtained and identified, twelve triterpenes namely ursolic acid (1), euscaphic acid (2), oleanolic acid (3), 2α,19α-dihydroxy-3-oxo-urs-12-en-28-oic acid (4), 2α,3β,13β-trihydroxyurs-11-en-28-oic acid (5),2α,3β-dihydroxy-lup-20(29)-en-28-oic acid methyl ester (6), methyl corosolate (7), uvaol (8), corosolic acid (9), 2α,3α,19α-trihydroxy-olean-12-en-28-oic acid (10), β-sitosterol (11), 2α,3α,19α,23-tetrahydroxyolean-12-en-28-oic acid (12), and one alcohol, l-heneicosanol (13). Compounds 5, 6, 8, 12 and 13 have been obtained from genus Eriobotrya for the first time.

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CHEN Huan;CHEN Guang;REN HongMei;YANG QuanHua;YU ChangYuan. Isolation of the triterpenes from Eriobotrya japonicaleaves[J]. Journal of Beijing University of Chemical Technology, 2012, 39(3): 40-45

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