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Original Articles

Four new N-contained iridoid glycosides from flower buds of Lonicera japonica

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Pages 729-737 | Received 27 Jul 2011, Accepted 20 Apr 2012, Published online: 14 Jun 2012
 

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.

Acknowledgments

This research program was financially supported by National Science and Technology Project of China (No. 2009ZX09311-004) and The State Key Laboratory of Bioactive Substances and Function of Natural Medicine.

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