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2016•Journal of Asian Natural Products ResearchRequires access

Two new lignans from the aerial part of Vitex negundo

Xiu-Fang Nie, Lili Yu, Yuan Tao, Jian Huang, Liqin Ding, Xinchi Feng, Miaomiao Jiang, Lin Zheng, Li-Xia Chen, Feng Qiu

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Abstract

A new phenyldihydronaphthalene-type lignan, (3R,4S)-6-hydroxy-4-(4-hydroxy- 3-methoxyphenyl)-5,7-dimethoxy-3,4-dihydro-2-naphthaldehyde-3a-O-β-d-glucopyranoside (1), and a new phenylnaphthalene-type lignan, 6,7,4'-trihydroxy-3'-methoxy-2,3- cycloligna-1,4-dien-2a,3a-olide (2), along with 10-known lignan derivatives (3-12) were isolated from the aerial part of Vitex negundo var. heterophylla. Their structures were established by comprehensive 1D- and 2D-NMR spectroscopic analyses.

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A new phenyldihydronaphthalene-type lignan, (3R,4S)-6-hydroxy-4-(4-hydroxy- 3-methoxyphenyl)-5,7-dimethoxy-3,4-dihydro-2-naphthaldehyde-3a-O-β-d-glucopyranoside (1), and a new phenylnaphthalene-type lignan, 6,7,4'-trihydroxy-3'-methoxy-2,3- cycloligna-1,4-dien-2a,3a-olide (2), along with 10-known lignan derivatives (3-12) were isolated from the aerial part of Vitex negundo var. heterophylla. Their structures were established by comprehensive 1D- and 2D-NMR spectroscopic analyses.

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Available abstract

A new phenyldihydronaphthalene-type lignan, (3R,4S)-6-hydroxy-4-(4-hydroxy- 3-methoxyphenyl)-5,7-dimethoxy-3,4-dihydro-2-naphthaldehyde-3a-O-β-d-glucopyranoside (1), and a new phenylnaphthalene-type lignan, 6,7,4'-trihydroxy-3'-methoxy-2,3- cycloligna-1,4-dien-2a,3a-olide (2), along with 10-known lignan derivatives (3-12) were isolated from the aerial part of Vitex negundo var. heterophylla. Their structures were established by comprehensive 1D- and 2D-NMR spectroscopic analyses.

Key concepts: Lignan, Vitex negundo, Two-dimensional nuclear magnetic resonance spectroscopy, Chemistry, Vitex, Stereochemistry, Botany, Organic chemistry

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