Jacobaea cannabifolia (Less.) E. Wiebe

4(3H) -quinazolinone is a fused nitrogen heterocyclic compound whose derivatives have a wide range of antimicrobial and antitumor activities.

Qingdainone is a quinazoline alkaloid and also a TMPRSS2 inhibitor. Qingdainone can be isolated from Strobilanthes cusia. Qingdainone exhibits anti-tumor and anti-inflammatory activities. Qingdainone can be used in studies related to chronic myeloid leukemia.

3-Acetonyl-3-hydroxyoxindole (AHO) is a potent systemic acquired resistance (SAR) inducer in plants. 3-Acetonyl-3-hydroxyoxindole induces resistance in tobacco plants against infection with tobacco mosaic virus (TMV) and the fungal pathogen Erysiphe cichoracearum. 3-Acetonyl-3-hydroxyoxindole increases the level of pathogenesis-related gene 1 (PR-1) expression, salicylic acid (SA) accumulation and phenylalanine ammonia-lyase activity.

4(3H) -quinazolinone is a fused nitrogen heterocyclic compound whose derivatives have a wide range of antimicrobial and antitumor activities.

Cephalandole B is an indigo alkaloid that has the activity of inhibiting IL-17A gene expression. Cephalandole B significantly inhibited the activity of IL-17A luciferase reporter gene in Jukat cells, and this inhibitory effect was dose-dependent. Cephalandole B may have important application prospects in inflammation-related research.