期刊
TETRAHEDRON
卷 61, 期 36, 页码 8656-8662出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2005.06.109
关键词
Caesalpinia crista; taepeenin; nortaepeenin; cassane diterpenes
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.
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