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

Abstract

Objective: To study the chemical constituents from the seeds of Allium cepa L., the constituents of the seeds of Allium cepa L.

Methods: To isolate and purify by silica gel, macroporous resin HP-20, Sephadex LH-20, RP-18 column.

Results: 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).

Conclusion: 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.