New diterpenoids from stems and roots of Caesalpinia crista
New diterpenoids from stems and roots of Caesalpinia crista
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DOI：
10.1016/j.tet.2005.06.109
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发表时间：
2005-09-05
期刊：
影响因子：
2.1
通讯作者：
Atta-ur-Rahman
中科院分区：
文献类型：
--
作者：
Cheenpracha, S;Srisuwan, R;Atta-ur-Rahman
从鸡冠云实（Caesalpinia crista）的茎和根中分离得到9个新的卡桑型二萜化合物，命名为taepeenin A-I，2个新的降卡桑型二萜化合物，命名为nortaepeenin A-B，另外还分离得到3个已知的二萜化合物：vinhaticoic acid，methyl vinbaticoate和ent-11 beta-hydroxy-rosa-5，15-diene。通过波谱分析鉴定了化合物的结构。此外，通过X射线衍射分析证实了taepeenin A的结构。(c)2005爱思唯尔有限公司保留所有权利。
Nine new cassane-type diterpenes, named taepeenin A-I, and two new norcassane-type diterpenes, named nortaepeenin A-B, were isolated from the stems and roots of Caesalpinia crista along with three known diterpenes: vinhaticoic acid, methyl vinbaticoate and ent-11 beta-hydroxy-rosa-5,15-diene. Their structures were elucidated on the basis of spectroscopic analysis. In addition, the structure of taepeenin A was confirmed by X-ray diffraction analysis. (c) 2005 Elsevier Ltd. All rights reserved.