- Rigenolide A, a new secoiridoid glucoside with a cyclobutane skeleton, and three new acylated secoiridoid glucosides from Gentiana rigescens Franch
-
Rigenolide A (1), a new secoiridoid glucoside with a cyclobutane skeleton and three new acylated secoiridoid glucosides, 2′-(2,3-dihydroxybenzoyl)- gentiopicroside (2), 2′-(2,3-dihydroxybenzoyl)-swertiamarin (3), 3′-(2,3-dihydroxybenzoyl)-sweroside (4), along with two noriridoids (7 and 8) and two known secoiridoid glucosides (5 and 6), were isolated from Gentiana rigescens Franch. The structures of new compounds were elucidated by extensive spectroscopic analyses. The isolated compounds were evaluated for DPPH free-radical scavenging activity.
- Suyama, Yoshihiro,Kurimoto, Shin-Ichiro,Kawazoe, Kazuyoshi,Murakami, Kotaro,Sun, Han-Dong,Li, Shun-Lin,Takaishi, Yoshihisa,Kashiwada, Yoshiki
-
p. 166 - 172
(2013/10/21)
-
- Secoiridoid glycosides from Gentiana olivieri
-
From the whole plants of Gentiana olivieri, three new bitter secoiridoid glycosides, olivierosides A (1), B (2) and C (3) were isolated together with the known compounds, gentiopicroside, sweroside, 6'-O-β-D- glucosylgentiopicroside, swertiapunimarin, eustomoside, eustomorusside and septemfidoside, and the structures of the new compounds were elucidated based on spectroscopic and chemical evidence.
- Takeda, Yoshio,Masuda, Toshiya,Honda, Gisho,Takaishi, Yoshihisa,Ito, Michiho,Ashurmetov, Ozodebek A.,Khodzhimatov, Olimjon K.,Otsuka, Hideaki
-
p. 1338 - 1340
(2007/10/03)
-
