Norsesquiterpenoid glucosides and a rhamnoside of pyrrolizidine alkaloid from Tephroseris kirilowii.
Four new glycosylated compounds have been isolated from the whole plant of Tephroseris kirilowii, including (-)-(1R,5R,6S,7R,8S)-8-O-beta-D-glucopyranosyloxy-7-hydroxy-6-(2-hydroxypropan-2-yl)-9-methylenebicyclo[4.3.0]non-3-one (tephroside A, 1), (-)-(1R,5R,6R,8R)-6-(2-O-beta-D-glucopyranosyloxypropan-2-yl)-8-hydroxy-9-methylenebicyclo[4.3.0]non-3-one (tephroside B, 2), thesinine-4'-O-alpha-L-rhamnoside (3), and p-coumaric acid 4-O-alpha-L-rhamnoside (4), together with the known roseoside. The structures of the new compounds were established by means of spectroscopic analysis.
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
Yue-Hu
YH
Wang
Jian-Hua
JH
Wang
Hong-Ping
HP
He
Hua
H
Zhou
Xian-Wen
XW
Yang
Chun-Shun
CS
Li
Xiao-Jiang
XJ
Hao
D000470:Alkaloids / Q000737:chemistry*; D019659:Asteraceae / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry*
D000470:Alkaloids; D005960:Glucosides; D012717:Sesquiterpenes