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Structure elucidation and complete NMR spectral assignments of four new diterpenoids from Smallantus sonchifolius

✍ Scribed by De-Qiang Dou; Fang Tian; Ying-Kun Qiu; Ting-Guo Kang; Feng Dong

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
117 KB
Volume
46
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Four new diterpenoids, named smaditerpenic acid A–D, together with five known compounds, were isolated from the H~2~O extract of the leaves of Smallantus sonchifolius (yacon) cultivated in Liaoning, China and their structures were elucidated on the basis of one‐ and two‐dimensional NMR (including ^1^H, ^13^C‐NMR, ^1^H^1^H COSY, HSQC, TOCSY, HMBC, and ROESY), electrospray ionization mass spectrometry (ESI‐MS), and chemical methods. Copyright © 2008 John Wiley & Sons, Ltd.

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