A dipeptide and two glycosides from Streptocaulon griffithii

Area of Science:

• Natural Product Chemistry
• Phytochemistry
• Organic Chemistry

Background:

• Streptocaulon griffithii is a plant species with potential medicinal properties.
• Phytochemical investigations are crucial for discovering novel bioactive compounds.

Purpose of the Study:

• To isolate and characterize novel chemical constituents from the roots of Streptocaulon griffithii.
• To contribute to the understanding of the phytochemical profile of this plant species.

Main Methods:

• Extraction and isolation of compounds from plant material.
• Structure elucidation using spectroscopic techniques (e.g., NMR, Mass Spectrometry).
• Comparison of spectral data with existing literature for known compounds.

Main Results:

• Isolation of three new compounds: streptin (a dipeptide), (R)-3-ethyl-4-methylpentyl-beta-rutinoside (a hemiterpenoid), and 1-methoxyl-4-O-beta-glucopyronosyl-beta-digitoxose (a disaccharide).
• Identification of five known compounds from the same plant extract.
• Comprehensive structural characterization of all isolated compounds.

Conclusions:

• The phytochemical investigation of Streptocaulon griffithii roots led to the discovery of novel natural products.
• The identified compounds, including streptin, expand the knowledge of secondary metabolites in this genus.
• Spectroscopic analysis confirmed the structures of the new and known compounds.