Research review on the main chemical constituents and pharmacological properties of Piper flaviflorum

Piper flaviflorum(P.flaviflorum),belonging to the Piper genus of Piperaceae family,is widely distributed in south-central Yunnan.As a traditional medicine,P.flaviflorum has been used by the Dai people to treat dysmenorrhea and tinea.Phytochemical investigations of P.flaviflorum have resulted in the isolation of alkaloids,essential oils,glycosides and organic acid.Studies have shown that chemical constituents of P.flaviflorum have various pharmacological activities including anti-inflammatory,antifungal and anti-tumor effects.This paper reviewed the chemical constituents and pharmacological activities of P.flaviflorum to provide practical and useful information for further research and development of this plant.

胡椒酰胺类生物碱的核磁共振谱学特征

胡椒酰胺类生物碱是胡椒属植物的主要化学成分,结构类型多样,活性显著。自1939年首次报道以来,胡椒酰胺类生物碱一直是研究热点之一。迄今为止,已经从胡椒属植物中分离鉴定了胡椒酰胺类化合物200多个,主要涉及异丙基类、哌啶类、吡咯类等化学结构类型,且具有抗虫、抗菌、抗抑郁等生物活性。本文以胡椒属植物黄花胡椒(Piper flaviflorum)中分离得到的酰胺生物碱为例,探讨胡椒酰胺类生物碱在应用核磁共振波谱进行结构鉴定的规律。