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2012•Journal of Asian Natural Products ResearchRequires access

Four new N-contained iridoid glycosides from flower buds ofLonicera japonica

Zhong-Fei Zheng, Qingjian Zhang, Ruo-Yun Chen, De‐Quan Yu

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Abstract

Four new N-contained iridoid glycosides, lonijapospiroside A (1), L-phenylalaninosecologanin B (2), L-phenylalaninosecologanin C (3), and dehydroprolinoylloganin A (4), were isolated from the flower buds of Lonicera japonica Thunb. Their structures were established on the basis of UV, IR, MS, and NMR spectral data.

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What this paper is about

Four new N-contained iridoid glycosides, lonijapospiroside A (1), L-phenylalaninosecologanin B (2), L-phenylalaninosecologanin C (3), and dehydroprolinoylloganin A (4), were isolated from the flower buds of Lonicera japonica Thunb. Their structures were established on the basis of UV, IR, MS, and NMR spectral data.

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Available abstract

Four new N-contained iridoid glycosides, lonijapospiroside A (1), L-phenylalaninosecologanin B (2), L-phenylalaninosecologanin C (3), and dehydroprolinoylloganin A (4), were isolated from the flower buds of Lonicera japonica Thunb. Their structures were established on the basis of UV, IR, MS, and NMR spectral data.

Key concepts: Japonica, Glycoside, Iridoid, Caprifoliaceae, Chemistry, Spectral analysis, Botany, Stereochemistry

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