Related Experiment Video
Updated: Apr 27, 2026

Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries
Published on: March 31, 2021
New dihydrochalcone and propenamide from Lithocarpus polystachyus
Two novel compounds were isolated from Lithocarpus polystachyus Rehd. Their chemical structures were elucidated using advanced spectroscopic and mass spectrometry techniques.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
- Organic Chemistry
Background:
- Lithocarpus polystachyus Rehd. is a plant species with potential for novel compound discovery.
- The exploration of natural products is crucial for identifying new bioactive molecules.
Purpose of the Study:
- To isolate and characterize new chemical compounds from Lithocarpus polystachyus Rehd.
- To determine the structures of these novel compounds using spectroscopic methods.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation employing 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
- Mass spectral data analysis for molecular formula determination.
Main Results:
- Two new compounds were successfully isolated from the plant extract.
- Compound 1: (E)-4-(3, 4-dihydroxyphenyl)-N-(1 -hydroxy-2-(4-hydroxyphenyl) ethyl)-2-oxobut-3-enamide.
- Compound 2: phloretin2-O-beta-apiofuranosyl (1-->06)-beta-D-glucopyranoside.
Conclusions:
- The structures of the two isolated compounds were definitively determined.
- This study expands the knowledge of secondary metabolites found in Lithocarpus polystachyus Rehd.
More Related Videos
Related Concept Videos
Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
The direct-acting...
Prochirality
Cholinergic Antagonists: Chemistry and Structure-Activity Relationship
Direct-Acting Cholinergic Agonists: Pharmacokinetics
Direct-Acting Cholinergic Agonists: Therapeutic Uses
Preparation of Diols and Pinacol Rearrangement
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.

