Two new dammarane triterpenoids, 20R,21-epoxydammar-24-ene-3,23-dione and 20R,21-epoxy-3beta-hydroxydammar-24-ene-23-one have been isolated from the aerial parts of Kageneckia angustifolia D. Don, Rosaceae, along with the previously reported triterpenoids oleanolic acid and 3beta-(beta-D-glucosyloxy)-16alpha,23alpha-epoxycucurbita-5,24-dien-11-one and the phenolic prunasin. The structures of these compounds were established by MS, 1D- and 2D-NMR experiments, and the structure of the new compounds were confirmed by X-ray diffraction analysis.
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http://dx.doi.org/10.1002/mrc.1656 | DOI Listing |
Sci Rep
January 2025
Department of Pharmacognosy, Heilongjiang University of Chinese Medicine, Harbin, 150040, Hei-longjiang, China.
The roots of Panax ginseng C. A. Meyer (ginseng) are one of the traditional medicinal herbs in Asian countries and is known as the "king of all herbs".
View Article and Find Full Text PDFLife (Basel)
December 2024
Xi'an Botanical Garden of Shaanxi Province, Institute of Botany of Shaanxi Province, No. 17 Cuihua South Road, Xi'an 710061, China.
is a traditional Chinese medicinal plant of considerable application value and commercial potential, primarily due to its production of various bioactive compounds, particularly dammarane-type triterpenoid saponins that are structurally analogous to ginsenosides. Oxidosqualene cyclase (OSC), a pivotal enzyme in the biosynthesis of triterpenoid metabolites in plants, catalyzes the conversion of oxidosqualene into triterpenoid precursors, which are essential components of the secondary metabolites found in . To elucidate the role of gene family members in the synthesis of gypenosides within , this study undertook a comprehensive genome-wide identification and characterization of genes within and compared their expression levels across populations distributed over different geographical regions by both transcriptome sequencing and qRT-PCR experimental validation.
View Article and Find Full Text PDFMolecules
December 2024
School of Functional Food & Wine, Shenyang Pharmaceutical University, Shenyang 110016, China.
J Agric Food Chem
December 2024
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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