A Novel Atisane Diterpenoid from Spiraea japonica var. acuta |
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| Authors: | Hai‐Yang Liu Suo Gao Ying‐Tong Di Chang‐Xiang Chen Yang Lü Li Zhang Qi‐Tai Zheng Xiao‐Jiang Hao |
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| Affiliation: | 1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, P.?R. China, (phone: +86‐871‐5223263;2. fax: +86‐871‐5216894);3. Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, P.?R. China |
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| Abstract: | A novel ent‐atisane lactone, spiramilactone E ( 1 ), was isolated from Spiraea japonica var. acuta Yu . Its structure was elucidated by extensive spectroscopic analyses, and unequivocally confirmed by single‐crystal X‐ray diffraction (Fig. 2). Compound 1 contains a γ‐lactone moiety between the 6‐OH function and C(20), and β‐configuration for the 7‐OH group, in contrast to known related diterpenes previously isolated from the S. japonica complex. |
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| Keywords: | Spiraea japonica var. acuta Atisane diterpenoids Diterpenoids X‐Ray crystallography Spiramilactone E |
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