Liriodenine, a natural product isolated and purified from the barks of Liriodendron chinense (Hemsl.) Sarg., with anti-fungal activity, inhibits progression of the CAOV-3 cell cycle in S phase and exhibits potent antitumor activities in laryngocarcinoma HEp-2 cells, in vitro and in vivo, via the upregulation of p53 expression.

Syringaresinol diacetate is a natural product isolated and purified from the herbs of Liriodendron tulipifera.

Epitulipinolide diepoxide, a natural product isolated and purified from the herbs of Liriodendron chinense (Hemsl.) Sarg., has antioxidative and chemopreventive activities in skin melanoma cells, significantly inhibits the proliferation of melanoma cells, and possesses cytotoxic activity against KB cells.

2,2,5,5-Tetramethylcyclohexane-1,4-dione is a natural product isolated and purified from the herbs of Liriodendron tulipifera.

Syringin pentaacetate is a natural product isolated and purified from the herbs of Liriodendron chinense (Hemsl.) Sarg..