gnpl_a_974053_sm1273.docx (3.6 MB)
A new hemiterpene glycoside from the ripe tomatoes
Version 2 2014-12-20, 17:43
Version 1 2014-12-20, 17:43
journal contribution
posted on 2014-12-20, 17:43 authored by Masateru Ono, Shin Yasuda, Yuki Shiono, Chisato Furusawa, Shinya Inaba, Takayuki Tanaka, Tsuyoshi Ikeda, Toshihiro NoharaA new hemiterpene glycoside (1) was isolated from ripe tomatoes (the fruit of Lycopersicon esculentum, Solanaceae) along with eight known compounds. The chemical structure of 1 was determined to be 2-methylbutan-1-ol β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranoside, based on spectroscopic data as well as chemical evidence. In addition, the radical-scavenging activities of the isolated compounds on the free radical of 1,1-diphenyl-2-picrylhydrazyl were examined. Among the tested compounds, tryptophan, 4-O-β-d-glucopyranosyl caffeic acid and dihydro-p-coumaryl alcohol γ-O-β-d-glucopyranoside demonstrated 42.0%, 50.1% and 76.0% scavenging activities, respectively, at a concentration of 0.5 mM.