A zwitterionic alkaloid, containing a rare cyclopentadienyl anion unit, from the stem barks of Daphniphyllum macropodum MiQ.
A zwitterionic alkaloid, containing a rare cyclopentadienyl anion unit, from the stem barks of Daphniphyllum macropodum MiQ.
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DOI：
10.1002/cbdv.200690127
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发表时间：
2006-01-01
影响因子：
2.9
通讯作者：
Hu, Li-Hong
中科院分区：
文献类型：
--
作者：
Gan, Xian-Wen;Bai, Hai-Yun;Hu, Li-Hong
从大柄虎皮楠（Daphniphyllum macropodum MiQ.）的茎皮中分离得到一个新的虎皮楠属生物碱daphnicyclidin L（1），以及四种已知的生物碱：daphnicyclidin D（2）、daphnicyclidin H（3）、deoxyyuzurimine（4）和yuzurimine（5）。根据光谱数据鉴定了结构。通过单晶X-射线衍射晶体学确定了化合物1的构型。
A new Daphniphyllum alkaloid daphnicyclidin L (1), containing a rare cyclopentadienyl anion, which is stabilized as a zwitterion by an internal iminium counterion, was isolated from the stem barks of Daphniphyllum macropodum MiQ., together with four known alkaloids: daphnicyclidin D (2), daphnicyclidin H (3), deoxyyuzurimine (4), and yuzurimine (5). The structures were elucidated on the basis of spectroscopic data. The configuration of 1 was elucidated by single-crystal X-ray diffraction crystallography.