A new caffeate compound from Nardostachys chinensis.

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Pharmacognosy

Background:

• Nardostachys chinensis Batal. is a plant species with traditional medicinal uses.
• The chemical composition of Nardostachys species is of interest for discovering bioactive compounds.
• Previous phytochemical investigations of Nardostachys genus have identified various secondary metabolites.

Purpose of the Study:

• To isolate and characterize new and known compounds from the roots and rhizomes of Nardostachys chinensis Batal.
• To elucidate the chemical structures of isolated compounds using spectroscopic and physicochemical methods.
• To report for the first time the presence of specific compounds within the Nardostachys genus.

Main Methods:

• Isolation of compounds using chromatographic techniques (e.g., column chromatography).
• Structure elucidation employing spectroscopic methods such as Nuclear Magnetic Resonance (NMR) and Mass Spectrometry (MS).
• Physicochemical property analysis for compound identification and confirmation.

Main Results:

• A new caffeate compound, (E)-erythro-syringylglyceryl caffeate (1), was successfully isolated.
• Nine known phenolic compounds were identified: (+)-licarin A (2), naringenin 4', 7-dimethyl ether (3), pinoresinol-4-O-β-D-glucoside (4), caraphenol A (5), Z-miyabenol C (6), protocatechuic acid (7), caffeic acid (8), gallic acid (9), and vanillic acid (10).
• Compounds 2, 5, and 6 represent the first reported occurrence of these specific molecules in the Nardostachys genus.

Conclusions:

• The phytochemical investigation of Nardostachys chinensis roots and rhizomes yielded a new caffeate derivative and several known phenolic compounds.
• The structural elucidation confirmed the identity of all isolated compounds.
• This study significantly contributes to the chemotaxonomic understanding of the Nardostachys genus by reporting novel and extended occurrences of phenolic compounds.