Isoastilbin is a dihydroflavonol glycoside compound found in Rhizoma Smilacis glabrae and Astragalus membranaceus. Isoastilbin inhibits glucosyltransferase (GTase) with an IC50 value of 54.3 μg/mL and possesses anti-acne and tyrosinase inhibition properties. Additionally, isoastilbin demonstrates neuroprotective, antioxidation, antimicrobial, and anti-apoptotic properties, indicating potential for Alzheimer's disease research.

De-O-methyllasiodiplodin exhibits radical scavenging, moderate antibacterial, and potential anti-inflammatory effects, it shows moderate suppression effects on induced NO production. De-O-methyllasiodiplodin effectively lowers the blood glucose level in d