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Structure elucidation and complete NMR spectral assignments of four new diterpenoids from Smallantus sonchifolius
Author(s) -
Dou DeQiang,
Tian Fang,
Qiu YingKun,
Kang TingGuo,
Dong Feng
Publication year - 2008
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2242
Subject(s) - chemistry , heteronuclear single quantum coherence spectroscopy , electrospray ionization , two dimensional nuclear magnetic resonance spectroscopy , stereochemistry , mass spectrometry , carbon 13 nmr , chromatography
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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