Article

[Studies on chemical constituents of the seeds of Allium cepa].

Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials 03/2008; 31(2):222-3. pp.222-3
Source: PubMed

ABSTRACT To study the chemical constituents from the seeds of Allium cepa L., the constituents of the seeds of Allium cepa L.
To isolate and purify by silica gel, macroporous resin HP-20, Sephadex LH-20, RP-18 column.
Seven compounds were isolated from the EtOH extract of the seeds of Allium cepa., their structures were elucidated by physico-chemical properties and spectroscopic analysis as tianshic acid (I), N-trans-feruloyl tyramine (II), beta-sitosterol-3 beta-glucopyranoside-6'-palmitate (III), sitosterol (IV), daucosterol (V), tryptophane (VI), adenine riboside (VI).
Compounds V-VIII are obtained from this plant for the first time, compounds I-IV are isolated from the genus Allium for the first time.

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Keywords

adenine riboside
 
Allium cepa
 
Allium cepa L
 
beta-sitosterol-3 beta-glucopyranoside-6'-palmitate
 
chemical constituents
 
compounds
 
compounds I-IV
 
Compounds V-VIII
 
daucosterol
 
genus Allium
 
N-trans-feruloyl tyramine
 
physico-chemical properties
 
RP-18 column
 
seeds
 
Sephadex LH-20
 
silica gel
 
sitosterol
 
spectroscopic analysis
 
structures
 

Ling Yuan