| Literature DB >> 8988599 |
Abstract
Three new triterpenoidal saponins (1-3), together with the known compound 4, were isolated from a MeOH extract of the aerial parts of Gynostemma pentaphyllum. Their structures were elucidated on the basis of chemical and spectral methods, such as 1H-1H DQFCOSY, HMQC, HMBC, and TOCSY NMR spectra. The aglycon moiety of 1 and 2 is a new dammarane-type triterpene 12-oxo-2 alpha, 3 beta, 20 (S)-trihydroxydammar- 24-ene.Entities:
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Year: 1996 PMID： 8988599 DOI： 10.1021/np960445u
Source DB: PubMed Journal: J Nat Prod ISSN： 0163-3864 Impact factor: 4.050