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Structural determination of a new 2(3 → 20) abeo taxane with an unusual 13β‐substitution pattern and a new 6/8/6‐ring taxane from Taxus cuspidata
Author(s) -
Huo Changhong,
Su Xiaohui,
Li Xing,
Zhang Xiping,
Li Cunfang,
Wang Yufang,
Shi Qingwen,
Kiyota Hiromasa
Publication year - 2007
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2001
Subject(s) - taxane , chemistry , stereochemistry , ring (chemistry) , substitution (logic) , organic chemistry , medicine , cancer , breast cancer , computer science , programming language
A new 2(3 → 20) abeo taxane with an unusual 13β‐substitution pattern and a new 6/8/6‐ring taxane were isolated from the methanol extract of the needles of Taxus cuspidata . The structures were established as 2α,7β‐diacetoxy‐5α,10β,13β‐trihydroxy‐2(3 → 20) abeo taxa‐4(20), 11‐dien‐9‐one (1) and 2α,5α,7β,9α,13α‐pentahydroxy‐10β‐acetoxytaxa‐4(20),11‐diene (2) on the basis of 1D and 2D NMR spectral data and high‐resolution FAB‐MS analyses. Copyright © 2007 John Wiley & Sons, Ltd.