110-Phenanthroline monohydrate is an inhibitor of metallopeptidases inhibits zinc-dependent hydrolysis of Fa-Gly-Leu-NH2 by B. subtilis neutral protease and B. thermoproteolyticus thermolysin.

Epitheaflagallin 3-O-gallate is a minor polyphenol in black tea. Epitheaflagallin 3-O-gallate exhibits versatile physiological functions in vivo and in vitro, including antioxidative activity, pancreatic lipase inhibition, Streptococcus sorbinusglycosyltransferase inhibition, and an inhibiting effect on the activity of matrix metalloprotease-1 and -3 and their synthesis by human gingival fibroblasts.

Calycosin 7-O-β-D-glucoside has antimicrobial activity. Calycosin 7-O-β-D-glucoside is anticipated to be a promising anti-HIV agent.