ent-pimarane-type diterpenoids from Siegesbeckia orientalis L.
A new ent-pimarane glucoside, named hythiemoside B (4), was isolated from the aerial part of Siegesbecikia orientalis L. (Asteraceae) together with four known ent-pimarane-type diterpenoids: darutigenol (1), darutoside (2), hythiemoside A (3), and ent-(15R),16,19-trihydroxypimar-8(14)-ene 19-O-beta-D-glucopyranoside (5). The structure of the new compound was elucidated by spectroscopic analyses and chemical transformation. The NMR data of compounds 1 (1H-) and 5 (1H- and 13C-) were also compiled in this study on the basis of 2D experiments.
Giang
Phan Minh
PM
Faculty of Chemistry, College of Natural Science, Vietnam National University, Hanoi, Vietnam.
Son
Phan Tong
PT
Otsuka
Hideaki
H
D045784:Abietanes / Q000737:chemistry* / Q000302:isolation & purification; D019659:Asteraceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D016339:Spectrometry, Mass, Fast Atom Bombardment; D017550:Spectroscopy, Fourier Transform Infrared; D014744:Vietnam
D045784:Abietanes; D004224:Diterpenes; C500865:hythiemoside B; C433018:pimarane