New kaempferol 3,7-diglycosides from Asplenium ruta-muraria and Asplenium altajense.
A flavonoid was isolated from the fronds of Asplenium ruta-muraria and A. altajense (Aspleniaceae) collected in the Altai Mountains and adjacent area. The compound was identified as kaempferol 3-O-β-[(6'''-E-caffeoylglucopyranosyl)-(1-->3)-glucopyranoside]-7-O-β-glucopyranoside (1) by UV, 1H and 13C NMR spectroscopy, LC-MS, and acid and alkaline hydrolyses. Another flavonoid (2) was isolated from A. altajense, as a minor compound, together with 1 and identified as deacylated compound 1, i.e. kaempferol 3-O-laminaribioside-7-O-glucoside. They were found in nature for the first time.
Tsukasa
T
Iwashina
Junichi
J
Kitajima
Takayuki
T
Mizuno
Sergey V
SV
Smirnov
Oyunchimeg
O
Damdinsuren
Katsuhiko
K
Kondo
D044949:Kaempferols / Q000737:chemistry*; D015394:Molecular Structure
D044949:Kaempferols; C000598499:kaempferol 3-O-beta-((6''-E-caffeoylglucopyranosyl)-(1-3)-glucopyranoside)-7-O-beta-glucopyranoside; C000598500:kaempferol 3-O-laminaribioside-7-O-glucoside