Structural determination of two new triterpenoids from Potentilla discolor Bunge by NMR techniques

Two new pentacyclic triterpenoids, 3α, 30‐dihydroxylup‐20(29)‐en‐27‐oic acid (1) and (20S)‐3α, 29‐dihydroxylupan‐27‐oic acid (2) were isolated from the whole herbs of Potentilla discolor Bunge. The structures of these two new compounds were elucidated, and complete assignments of the 1H and 13C NMR...

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Published in:Magnetic resonance in chemistry 2008-08, Vol.46 (8), p.794-797
Main Authors: Yang, Jie, Chen, Xiao-Qing, Liu, Xiao-Xiao, Cao, Yuan, Lai, Mao-Xiang, Wang, Qiang
Format: Article
Language:English
Subjects:
(20S)-3α
(20S)‐3α, 29‐dihydroxylupan‐27‐oic acid
1D/2D NMR
29-dihydroxylupan-27-oic acid
30-dihydroxylup-20-en-27-oic acid
3α, 30‐dihydroxylup‐20‐en‐27‐oic acid
Magnetic Resonance Spectroscopy
Molecular Structure
NMR
Pentacyclic Triterpenes - chemistry
Pentacyclic Triterpenes - isolation & purification
Potentilla - chemistry
Potentilla discolor Bunge
Rosaceae
Triterpenes - chemistry
Triterpenes - isolation & purification
triterpenoids
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Summary:Two new pentacyclic triterpenoids, 3α, 30‐dihydroxylup‐20(29)‐en‐27‐oic acid (1) and (20S)‐3α, 29‐dihydroxylupan‐27‐oic acid (2) were isolated from the whole herbs of Potentilla discolor Bunge. The structures of these two new compounds were elucidated, and complete assignments of the 1H and 13C NMR spectroscopic data were achieved by 1D and 2D NMR experiments (HSQC, HMBC, 1H1HCOSY and ROESY). Copyright © 2008 John Wiley & Sons, Ltd.
ISSN:0749-1581
1097-458X
DOI:10.1002/mrc.2253