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Molecules 2013, 18(3), 2840-2850; doi:10.3390/molecules18032840

New Limonoids and a Dihydrobenzofuran Norlignan from the Roots of Toona sinensis

Key Laboratory of Tea Biochemistry and Biotechnology, School of Tea and Food Technology, Anhui Agricultural University, Hefei 230036, China
Research Center on Entomogenous Fungi, School of Forestry, Anhui Agricultural University, Hefei 230036, Anhui, China
Department of Natural Products Chemistry, Shanghai Institute of Material Medica, Shanghai 201203, China
Author to whom correspondence should be addressed.
Received: 24 December 2012 / Revised: 28 January 2013 / Accepted: 30 January 2013 / Published: 1 March 2013
(This article belongs to the Section Natural Products)
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Two new limonoids, toonins A (1) and B (2), and one new dihydrobenzofuran norlignan, toonin C (3), were isolated from the roots of Toona sinensis together with the ten known compounds 4-methoxy-6-(2′,4′-dihydroxy-6′-methylphenyl)-pyran-2-one (4), bourjotinolone A (5), proceranone (6), matairesinol (7), 4-hydroxy-3-methoxybenzene-ethanol (8), syringic acid (9), isoscopoletin (10), lyoniresinol (11), aloeemodin (12), and β-sitosterol (13). Their structures were elucidated on the basis of one- and two-dimensional spectroscopic analysis. Isolation of compounds 4, 613 from this plant is reported here for the first time. View Full-Text
Keywords: Meliaceae; Toona sinensis; limonoids; DPPH free radical scavenging Meliaceae; Toona sinensis; limonoids; DPPH free radical scavenging

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Dong, X.-J.; Zhu, Y.-F.; Bao, G.-H.; Hu, F.-L.; Qin, G.-W. New Limonoids and a Dihydrobenzofuran Norlignan from the Roots of Toona sinensis. Molecules 2013, 18, 2840-2850.

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