Tetrahydroberberine is an isoquinoline alkaloid isolated and purified from the barks of Phellodendron chinense Schneid. It has micromolar affinity for dopamine D(2) (pK (i) = 6.08) and 5-HT(1A) (pK (i) = 5.38) receptors but moderate to no affinity for other relevant serotonin receptors(5-HT(1B), 5-HT(1D), 5-HT(3), and 5-HT(4); pK (i) < 5.00).

Berberrubine, a natural product isolated and purified from the herbs of Coptis chinensis Franch. with antitumor and antidiabetic activity, dose-dependently inhibits IL-8 and MCP-1 protein levels in the media and mRNA expression of the cells stimulated with IL-1beta or TNF-alpha.

Groenlandicine是从黄连中分离得到的一种原小檗碱生物碱，具有中度抑制人类重组醛糖还原酶 (HRAR) 的作用，IC50值为154.2 μM，并能诱导拓扑异构酶I介导的DNA裂解。

Demethyleneberberine (DMB), a component of CPC, is reported to treat alcoholic liver disease as a novel natural mitochondria-targeted antioxidant.

Berbamine, a natural product isolated and purified from the roots of Cocculus orbiculatus (L.) DC., has high binding affinity toward the (GGA)8 G-quadruplex, and is a promising agent to suppress liver cancer growth by targeting CAMKII.

8-Oxoepiberberine是口服左金方剂后血清中的一种主要生物碱代谢物，具有用于胃肠道疾病的研究潜力，尤其是在中药领域广泛应用于功能性胃肠疾病的基础研究中。

Columbamine is a quaternary isoquinoline alkaloid isolated and purified from the roots of Coptis chinensis Franch, shows strong activity with IC50 48.1 µM and exerts anti-proliferative and anti-vasculogenic effects on metastatic human osteosarcoma U2OS cells with low toxicity.

Palmatine, a natural product isolated and purified from the rhizomes of Coptis chinensis Franch., is an inhibitor of dopamine generation. Palmatine could potentially be developed for the treatment of flavivirus infections.

Picroside I, a natural product isolated and purified from the roots of Picrorhiza scrophulariiflora, possesses the properties of antioxidants,through the activity of superoxide dismutase, metal ion chelators and xanthine oxidase inhibitors.