Neolignans and the analysis of the essential oil of Piper regnellii (Miq.) C. DC. var. pallescens (C. DC.) Yunck leaves

Revista Brasileira de Farmacognosia

Pessini, G.L.¹  Nakamura, C.V.¹  Dias Filho, B.P.¹  Ferreira, A.G.¹  Universidade Federal de São Carlos, São Carlos, Brasil¹  Cortez, D.A.G.¹  Universidade Estadual de Maringá, Maringá, Brasil¹ 

关键词: Piper regnellii;    Piperaceae;    neolignans;    essential oil;    GC/MS;   

DOI  :  10.1590/S0102-695X2005000300006

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

The essential oil of Piper regnellii (Miq.) C. DC. var. pallescens (C. DC.) Yunck Piparaceae leaves, which were collected at a tree farm named Horto de Plantas Medicinais of the Universidade Estadual de Maringá, was obtained by hydrodistillation. A preliminary analysis by GC/MS was carried out. b-mirceno (70%) was identified as the main constituent by comparing MS and 13C NMR with the literature data. Four neolignans were isolated from the leaves and identified: eupomatenoid-6, eupomatenoid-5, eupomatenoid-3 and conocarpan. Their structures were established by extensive 1H and 13C NMR, 1H x 1H - COSY, HETCOR, HMBC, gNOE and MS spectral studies.

【 授权许可】

Unknown