Two new triterpene saponins from the aerial parts of Paraquilegia microphylla.
Two new triterpene saponins, paraquinosides A (1) and B (2) were isolated from the aerial parts of Paraquilegia microphylla (Royle) Dromm. et Hutch, a Tibetan ethnic medicine distributed in the Qinghai-Tibet Plateau. On the basis of 1D and 2D NMR evidence, their structure was elucidated as 3-O-alpha-L-rhamnopyranosyl (1-->2)-beta-D-glucopyranosyl-15-dehydroxyl-16-O-methyl-24, 25-deoxy-26-hydroxylshengmanol-26-O-beta-D-glucopyranoside (1) and 3-O-alpha-L-Rhamnopyranosyl (1-->2)-[beta-D-glucopyranosyl(1-->3)]-beta-D-glucopyranosyl-15-dehydroxyl-16-O-methyl-24, 25-deoxy-26-hydroxylshengmanol-26-O-beta-D- glucopyranoside (2), respectively.
Xu
Kaijie
K
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. xukaijien@163.com
Zhang
Pei
P
Liao
Xun
X
Peng
Shulin
S
Wang
Mingkui
M
Ding
Lisheng
L
D038861:Medicine, Tibetan Traditional; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry; D029626:Ranunculaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D012503:Saponins; D014315:Triterpenes; C553622:paraquinoside A; C553623:paraquinoside B