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- Title
Three New ent-Kaurane Diterpenoids from Siegesbeckia pubescens.
- Authors
Liu, Jia; Feng, Lin; Li, Hai-Dao; Dong, Qing-Li; Chen, Rong
- Abstract
Three new ent-kaurane glucopyranosides, 2- O-[ β- D-apiofuranosyl-(1→3)-2- O-isovaleryl- β- D-glucopyranosyl]-4- epi-atractyligenin ( 1), 2- O-[ β- D-apiofuranosyl-(1→3)-2- O-isovaleryl- β- D-glucopyranosyl]atractyligenin ( 2), and 2- O-[ β- D-apiofuranosyl-(1→3)-2- O-(3-methylpentanoyl)- β- D-glucopyranosyl]-4- epi-atractyligenin ( 3), along with 2- O-(2- O-isovaleryl- β- D-glucopyranosyl)-4- epi-atractyligenin ( 4), were isolated for the first time from the aerial parts of Siegesbeckia pubescens. The structures were established by extensive spectroscopic analyses including 1 D- and 2 D-NMR (HSQC, HMBC, and ROESY), and HR-ESI-MS, and by comparison with published data.
- Subjects
HERBS; USEFUL plants; CHINESE medicine; HYPERTENSION; SPECTRUM analysis
- Publication
Helvetica Chimica Acta, 2012, Vol 95, Issue 2, p221
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.201100272