ABSTRACT
Three new sesquiterpenoids-vetiverianines A (1), B (2), and C (3)-and a known eudesmane sesquiterpenoid (4) were isolated from the roots of Vetiveria zizanioides. Vetiverianine A (1) has a unique carbon framework comprising a rigid tricyclic ring system. Vetiverianines B (2) and C (3) are new eremophilane sesquiterpenoids. The structures of sesquiterpenoids 1-3, including the absolute configurations, were determined by NMR spectroscopic, X-ray crystallography, and vibrational circular dichroism data analysis. Vetiverianine C (3) exhibited weak cytotoxic activity against HL-60 cells.
Subject(s)
Antineoplastic Agents, Phytogenic/isolation & purification , Chrysopogon/chemistry , Sesquiterpenes, Eudesmane/isolation & purification , Antineoplastic Agents, Phytogenic/chemistry , Antineoplastic Agents, Phytogenic/pharmacology , Crystallography, X-Ray , Drug Screening Assays, Antitumor , HL-60 Cells , Humans , Japan , Molecular Structure , Plant Roots/chemistry , Sesquiterpenes , Sesquiterpenes, Eudesmane/chemistry , Sesquiterpenes, Eudesmane/pharmacologyABSTRACT
A new neolignan glycoside (1) and four known aromatic compounds (2-5) were isolated. from the roots of Vetiveria zizanioides. The structure of compound 1 was determined based on spectroscopic analysis and hydrolysis. The structure of known flavonoid glycoside 3 was confirmed by X-ray crystallography. Compound 5 showed weak cytotoxic activity against HL-60 cells with an IC50 value of 13.1 ± 0.04 µM.
