Rigenolide A, a new secoiridoid glucoside with a cyclobutane skeleton, and three new acylated secoiridoid glucosides from Gentiana rigescens Franch
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- 作者：Yoshihiro Suyama ; Shin-ichiro Kurimoto ; Kazuyoshi Kawazoe ; Kotaro Murakami ; Han-Dong Sun ; Shun-Lin Li ; Yoshihisa Takaishi ; Yoshiki Kashiwada
- 关键词：Gentiana rigescens ; Secoiridoid ; Noriridoid ; Gentianaceae ; DPPH radical
- 刊名：Fitoterapia
- 出版年：December, 2013
- 年：2013
- 卷：91
- 期：Complete
- 页码：166-172
- 全文大小：581 K
文摘
Rigenolide A (1), a new secoiridoid glucoside with a cyclobutane skeleton and three new acylated secoiridoid glucosides, 2鈥?(2,3-dihydroxybenzoyl)-gentiopicroside (2), 2鈥?(2,3-dihydroxybenzoyl)-swertiamarin (3), 3鈥?(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.