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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.2726
|2 doi
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|a eng
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|a Wang, Xiao-Ling
|e verfasserin
|4 aut
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|a Structure elucidation and NMR assignments of two new triterpenoids from the stems of Paragonia pyramidata (Bignoniaceae)
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|c 2011
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 01.08.2011
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|a Date Revised 25.03.2011
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2011 John Wiley & Sons, Ltd.
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|a Phytochemical investigation of dichloromethane (DCM) extract from the stems of Paragonia pyramidata var. pyramidata L. Rich. (Bur.) resulted in the isolation and characterization of two new triterpenoids 3β,19β-dihydroxylup-12, 20(29)-diene-28-oic acid (1) and 3β,19β-dihydroxylup-12-en-28-oic acid (2), three known triterpenoids lupeol (3), spinosic acid A (4) and oleanolic acid (5), together with four known steroids (20R)-22E-24-ethylcholesta-4,22-dien-3-one (6), (20R)-24-ethylcholest-4-en-3-one (7), stigmasterol (8) and β-sitosterol (9). HREIMS, GC-MS and NMR experiments including HSQC, HMBC, COSY and NOESY were used for the determination of the structures and NMR spectral assignments. This is the first report about the chemical constituents for this plant
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|a Letter
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|a Research Support, Non-U.S. Gov't
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|a Triterpenes
|2 NLM
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|a Hay, Anne-Emmanuelle
|e verfasserin
|4 aut
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|a Matheeussen, An
|e verfasserin
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|a Gupta, Mahabir P
|e verfasserin
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|a Hostettmann, Kurt
|e verfasserin
|4 aut
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 49(2011), 4 vom: 01. Apr., Seite 184-9
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|x 1097-458X
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|g volume:49
|g year:2011
|g number:4
|g day:01
|g month:04
|g pages:184-9
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|u http://dx.doi.org/10.1002/mrc.2726
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