Studies on the Constituents of Swertia japonica. II. Isolation. and Structure of New Flavonoid, Swertiajaponin.
- 1 January 1967
- journal article
- research article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 15 (10) , 1567-1572
- https://doi.org/10.1248/cpb.15.1567
Abstract
Swertiajaponin, C22H22O11, m.p. 265[degree] (decomp.), was newly isolated from the whole S. japonica Makino, and identified as 6-C-[beta]-D-glucopyranosylluteolin-7-methyl-ether. Iso-swertiajaponin, C22H22O11, m.p. 258[image]261[degree] (decomp.) was obtained by the acid-treatment of swertiajaponin, and formulated as 8-C-[beta]-D-glucopyranosylluteolin-7-methylether. They were interconvertible into each other by boiling with mineral acids, reminiscent of the interrelationship between swertisin and isoswertisin.This publication has 2 references indexed in Scilit:
- C-Glycosylflavonoids. The chemistry of orientin and iso-orientinBiochemical Journal, 1965
- The flavone C-glycosides and flavonol O-glycosides of Aspalathus acuminatus (rooibos tea)Biochemical Journal, 1962