Abstract:
:Triterpene saponins 1-8 were isolated from the aerial parts of Gynostemma pubescens. Among them, compounds 1-4, 8 possess carboxylic groups at both C-21 and C-29, 5 contains a carboxylic group at C-21 and an aldehyde function at C-29, whereas 6 and 7 contain carboxylic groups at C-21 and hydroxymethylene groups at C-29. Their structural elucidation was accomplished by extensive spectroscopic methods including application of 1D (1H, (13)C, (13)C DEPT) and 2D NMR experiments (HMQC, HMBC, HSQC), HRESIMS analysis, as well as by chemical degradation.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Yang Z,Chen Q,Hu Ldoi
10.1016/j.phytochem.2007.05.005subject
Has Abstractpub_date
2007-07-01 00:00:00pages
1752-61issue
13eissn
0031-9422issn
1873-3700pii
S0031-9422(07)00320-2journal_volume
68pub_type
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