Orchidble (Compound 9) is a kind of phenanthrene compound which can be isolated from the roots of Bletilla ochracea.

7-Chloro-4-(piperazin-1-yl)quinolone 是活性分子化学中的重要支架。7-Chloro-4-（piperazin-1-yl）quinolone 是有效的 sirtuin 抑制剂，还抑制 5-羟色胺的摄取 (IC50 为 50 μM)。7-Chloro-4-(piperazin-1-yl)quinolone 对恶性疟原虫 D10 和 K1 菌株表现出抗疟疾活性，IC50 分别为 1.18 μM 和 0.97 μM。

Amylin (AMY3) antagonist (IC50 = 0.3 μM). Protects neuronal cells from Aβ(1-42)-induced cytotoxicity in vitro. Brain penetrant. Improves spatial memory and reduces Aβ plaque number and total area in a mouse Alzheimer's disease model.