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Updated: Jul 7, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Eight new dammarane-type triterpenoid saponins from Gynostemma pentaphyllum
Gang Li1,2, Guang Yang1,2, Xiao-Juan Chen1
1Beijing Institute of Radiation Medicine, Beijing, China.
Abstract:
Phytochemical investigation of Gynostemma pentaphyllum led to the purification of five novel dammarane-type triterpene isolates, gypenosides B1 - B5 (1-5). Their structures were determined through comprehensive 1D and 2D NMR spectroscopic analyses and HRESIMS data. Of note, 1-3 are inseparable mixtures of epimers due to their unstable nature, and a total of eight dammarane-type triterpene saponins were identified. Additionally, the protective activities of these new compounds against PC12 cell injury induced by hypoxia were evaluated.

