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  • Title: New triterpenoid saponins from Gynostemma pentaphyllum.
    Author: Hu L, Chen Z, Xie Y.
    Journal: J Nat Prod; 1996 Dec; 59(12):1143-5. PubMed ID: 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.
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