Isolation and identification of secondary metabolites from the roots of Brassica rapa = 순무(Brassica rapa) 뿌리로부터 이차대사산물의 분리 및 동정

Abstract

In order to identify secondary metabolites, the root of Brassica rapa was extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH and . From the EtOAc and n-BuOH fractions, four secondary metabolites were isolated through the repeated silica gel and octadecyl silica gel (ODS) column chromatographies. From the result of spectroscopic data including NMR and MS, the chemical structures of the compounds were determined as 4-(methoxymethyl)phenol (1), -methoxy-2,5-furandimethanol (2), phenyl--D-glucopyranoside (3), and 2-phenylethyl--D-glucopyranoside (4). They were isolated for the first time from Brassica rapa.