ent-pimarane-type diterpenoids from Siegesbeckia orientalis L.
ent-pimarane-type diterpenoids from Siegesbeckia orientalis L.
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DOI：
10.1248/cpb.53.232
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发表时间：
2005-02
影响因子：
1.7
通讯作者：
P. M. Giang;P. T. Son;H. Otsuka
中科院分区：
文献类型：
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作者：
P. M. Giang;P. T. Son;H. Otsuka
从菊科植物侧柏(Siegesbecikia orientalis L.)地上部分分离得到一个新的对位胡萝卜烷糖苷，命名为Hythiemoside B(4)，并与4个已知的对位胡萝卜烷型二萜化合物一起分离得到：达鲁蒂醇(darutigenol，1)，对胡萝卜苷(darutoside，2)，对位胡萝卜素A(hythiemoside A，3)，对位-(15R)，16，19-三羟基-8(14)-烯19-O-β-D-吡喃葡萄糖苷(5)。通过光谱分析和化学转化确定了新化合物的结构。在二维实验的基础上，编制了化合物1(1H-)和5(1H-和13C-)的核磁共振数据。
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.