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A Novel Atisane Diterpenoid from Spiraea japonica var. acuta

✍ Scribed by Hai-Yang Liu; Suo Gao; Ying-Tong Di; Chang-Xiang Chen; Yang Lü; Li Zhang; Qi-Tai Zheng; Xiao-Jiang Hao

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
89 KB
Volume
90
Category
Article
ISSN
0018-019X

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✦ Synopsis

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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