半边莲属

Clerodendrin (Apigenin-7-O-glucuronopyranosyl(1-2)-glucuronopyranoside) 是一种从 Clerodendron trichotomm 的叶子中分离出一种新的新齿状二萜类化合物，是萝卜锯蝇 Athalia rosae ruficornis 的摄食刺激剂。Clerodendrin 是一种白介素-4 (IL-4) 抑制剂和 β-己糖氨基苷酶 (Hex) 抑制剂。

Inhalation challenge with capsaicin and rapid intravenous injection of Lobelin and alinamin indicated that peripheral c-fiber receptors were involved in the induction of coughing.