Kauran-16,17-diol (ent-Kauran-16β,17-diol)是一种天然二萜化合物，具有抗肿瘤活性，通过抑制 LPS 诱导的 RAW 264.7 细胞的 NO 生成，IC50 值为 17 μM。

Peimisine is a steroidal alkaloid which is the major biologically active component in Bulbus Fritillariae and possess a variety of toxicological and pharmacological effects on humans.

Peiminine, a natural product isolated and purified from the bulbus of Fritillaria thunbergii Miq., is an effective inhibitor for lung inflammation and pulmonary fibrosis in a rat model of bleomycin-induced lung injury.It induces autophagic cell death thus represses colorectal carcinoma tumor growth.

Peimine can inhibit the production of inflammatory cytokines induced by LPS and block MAPK and NF-κB signaling pathways. It is purified from the bulbus of fritillaria thunbergii.

Imperialine is a natural product isolated and purified from the bulbus of Fritillaria thunbergii Miq. with antiasthmatic effect,on tracheal M receptor antagonist.