Flavonoids and aromatic compounds from the rhizomes of Zingiber zerumbet.
Repeated column chromatography of the CHCl3-soluble fraction of Zingiber zerumbet led to the isolation and identification of two aromatic compounds, p-hydroxybenzaldehyde (1) and vanillin (2), and six kaempferol derivatives, kaempferol-3,4',7-O-trimethylether (3), kaempferol-3-O-methylether (4), kaempferol-3,4'-O-dimethylether (5), 4''-O-acetylafzelin (6), kaempferol-3-O-(4-O-acetyl-alpha-L-rhamnopyranoside)], 2'',4''-O-diacetylafzelin (7), kaempferol-3-O-(2,4-O-diacetyl-alpha-L-rhamnopyranoside)], and 3'',4''-O-diacetylafzelin (8), kaempferol-3-O-(3,4-O-diacetyl-alpha-L-rhamnopyranoside)]. The structures of 1-8 were identified by analysis of spectroscopic data as well as by comparison with published values. This is the first report on the isolation of compounds 1-3 from this plant.
Jang
Dae Sik
DS
Division of Molecular Life Sciences, Ewha Womans University, Seoul 120-750, Korea.
Han
Ah-Reum
AR
Park
Gowooni
G
Jhon
Gil-Ja
GJ
Seo
Eun-Kyoung
EK
D001547:Benzaldehydes / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D027343:Rhizome; D030521:Zingiberaceae
D001547:Benzaldehydes; D005419:Flavonoids; D044949:Kaempferols; D010936:Plant Extracts; C100058:vanillin; C011483:4-hydroxybenzaldehyde