Iridoid glucosides from Viburnum chinshanense

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Pharmacognosy

Background:

• Viburnum chinshanense Graebn. is a plant species found in Western and Central China.
• The phytochemical investigation of medicinal plants is crucial for discovering novel bioactive compounds.

Purpose of the Study:

• To isolate and identify chemical constituents from the aerial parts of Viburnum chinshanense.
• To characterize novel and known iridoid glucosides and other secondary metabolites.

Main Methods:

• Phytochemical analysis of aerial plant parts.
• Isolation techniques including chromatography.
• Structure elucidation using spectroscopic methods.

Main Results:

• Six iridoid glucosides were isolated: the novel 10,2 '-diacetylpatrinoside (1) and known compounds (2-6).
• The known compounds include 2 '-acetyldihydropenstemide, 2 '-trans- p-coumaroyl-dihydropenstemide, 2 '-acetylpatrinoside, decapetaloside, and patrinoside.
• Additionally, amentoflavone and rosarin were isolated.

Conclusions:

• The study successfully identified a new iridoid glucoside, 10,2 '-diacetylpatrinoside, from Viburnum chinshanense.
• The findings contribute to the chemical knowledge of the Viburnum genus and may inform future research on potential bioactivities.