Flavokavain C is a flavokavain found in the kava plant.

(E)-Flavokawain A是从卡瓦胡椒中提取的查尔酮，具有抗癌作用。通过介入 bax 蛋白依赖和线粒体依赖的凋亡通路，诱导膀胱癌细胞凋亡，抑制小鼠肿瘤生长。

N-Nornuciferine, a natural product isolated and purified from the fruits of Piper nigrum, can competitively inhibit CYP2D6 activity with Ki values of 2.34 uM.

5,7-Dimethoxyflavone has moderate activity against trypanosoma brucei.

Yangonin, a natural product isolated and purified from the roots of Piper methysticum, possess significant binding affinity for the cannabinoid receptor CB1 and inhibits NF-κB activation through suppression of the transcriptional activity of the RelA/p65 subunit of NF-κB.

Desmethoxyyangonin is a natural kavalactones isolated and purified from the Piper methysticum (kava) plant which is an ireversible inhibitor of MAO-B.

Dihydromethysticin 是来自卡瓦（kava）的一种卡瓦内酯，诱导CYP3A23活性。

(+)-Kavain is a positive allosteric modulator of α4β2δ subunit-containing GABAA receptors with EC50 values of 25 and 59 µM in the presence and absence of 300 µM kavain, respectively.

Piperlongumine, a natural alkaloid from Piper longum L., increases the level of reactive oxygen species (ROS) and selectively kills cancer cells. It is a direct TrxR1 inhibitor with suppressive activity against gastric cancer and an inhibitor of CRM1 and is also an inhibitor of PI3K/Akt/mTOR in human breast cancer cells.

1-(3,4-Dimethoxycinnamoyl)piperidine is a natural product isolated and purified from the herbs of Piper longum L..

Nervogenic acid shows good pro-coagulant activity in vitro.

3'-Demethoxypiplartine is a natural product isolated and purified from the herbs of Piper longum L..

Piperlotine C is a natural product isolated and purified from the herbs of Piper nigrum L. with potent antiplatelet aggregation activity.

3-Phenyl-1-(pyrrol-1-yl)propan-1-one is a natural product isolated and purified from the herbs of Piper nigrum.

3,5-Diprenyl-4-hydroxybenzaldehyde is a natural product isolated and purified from the herbs of Piper aduncum..

Isodihydrofutoquinol B is a natural product isolated and purified from the leaves and stems of Piper schmidtii.