STUDIES OF THE FLAVONOIDS OF THE GENUS TRILLIUM PART 3 - FLAVONOL GLYCOSIDES IN THE LEAVES OF TRILLIUM-APETALON MAKINO AND TRILLIUM-KAMTSCHATICUM PALLAS
K. Yoshitama et al., STUDIES OF THE FLAVONOIDS OF THE GENUS TRILLIUM PART 3 - FLAVONOL GLYCOSIDES IN THE LEAVES OF TRILLIUM-APETALON MAKINO AND TRILLIUM-KAMTSCHATICUM PALLAS, Journal of plant research, 110(1100), 1997, pp. 443-448
Seven flavonol glycosides were isolated from the leaves of T. apetalon
. They were identified chromatographically and spectrally to be: querc
etin/kaempferol 3-0-alpha-arabinopyranosyl-(1 --> 6)-beta-galactopyran
oside (TQ and TK), quercetin/kaempferol 3-O-[2'''-O-acetyl-alpha-arabi
nopyranosyl] -(1 --> 6)-beta-galactopyranoside (TAQ and TAK), querceti
n 3-O-beta-glucoside (ISQ), isorhamnetin 3-O-alpha-arabinopyranosyl-(1
--> 6)-beta-galactopyranoside (TI) and isorhamnetin 3-O-[2'''-O-acety
l-alpha-arabinopyranosyl]-(1 --> 6)-beta-galactopyranoside (TAI). TQ,
TAQ, TI and TAI were major constituents. This is the first report on t
wo new isorhamnetin-type glycosides, TI and TAI. The seven flavonol gl
ycosides identical to those of T. apetalon were isolated and identifie
d in the leaves of T. kamtschaticum; TQ and TAQ were also major compon
ents, but TI and TAI were only minor components. TI and TAI were not d
etected in the leaves of T. tschonoskii. These leaf-flavonoid patterns
were discussed from a chemosystematic point of view.