[Alkaloids and lignans from stems of Piper betle].
Alkaloids and lignans from the stems of Piper betle were studied. Compounds were isolated and purified by repeated silica gel, reverse phase silica gel, Sephadex LH-20 column chromatography and preparative thin layer chromatography. The structures were elucidated on the basis of spectral analysis. From the ethyl acetate soluble fractions of the 70% acetone extract, ten compounds were isolated and identified as piperine (1), pellitorine (2), N-isobutyl-2E,4E-dodecadienamide (3), dehydropipernonaline (4), piperdardine (5), piperolein-B (6), guineensine (7), (2E,4E)-N-isobutyl-7-(3',4'-methylenedioxyphenyl)-2,4-heptadienamide (8), syringaresinol-O-beta-D-glucopyranoside (9),pinoresinol (10). All Compounds were isolated from the plant for the first time, and compounds 9 and 10 were isolated firstly from the genus.
School of Chemistry and Biotechnology of Yunnan Nationalities University, Kunming 650500, China. xiangzhonghuang@yahoo.com.cn
Xiangzhong
X
Huang
Yan
Y
Yin
Wenquan
W
Huang
Kuizong
K
Sun
Chunmei
C
Cheng
Lian
L
Bai
Yun
Y
Dai
D000470:Alkaloids / Q000032:analysis* / Q000302:isolation & purification; D002855:Chromatography, Thin Layer; D017705:Lignans / Q000032:analysis* / Q000302:isolation & purification; D031721:Piper betle / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry
D000470:Alkaloids; D017705:Lignans