15,16,19 trihydroxypimar 8(14) ene 19 o beta glucopyranoside 16 acetoxypimar 8(14) ene 3beta diol 3 o beta dextro glucoside caffeic acid darutigenol darutoside diterpenoid geranylnerol derivative germacranolide derivative hythiemoside A hythiemoside B melampolide pimarane rutoside carbon nuclear magnetic resonance thin layer chromatography
Issue Date:
2005
Publisher:
Chemical and Pharmaceutical Bulletin
Citation:
Volume 53, Issue 2, Page 232-234
Abstract:
A new ent-pimarane glucoside, named hythiemoside B (4), was isolated from the aerial part of
Siegesbecikia orientate 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-?-
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. ?? 2005 Pharmaceutical Society of Japan.
