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Ivorenoids A-F: limonoids from Khaya ivorensis
被引:15
|作者:
Wu, Wen-Bin
[1
]
Zhang, Hua
[1
]
Liu, Hong-Chun
[1
]
Dong, Shi-Hui
[1
]
Wu, Yan
[1
]
Ding, Jian
[1
]
Yue, Jian-Min
[1
]
机构:
[1] Chinese Acad Sci, Shanghai Inst Mat Med, State Key Lab Drug Res, Shanghai 201203, Peoples R China
来源:
关键词:
Khaya ivorensis;
Limonoid;
Ivorenoid;
Cytotoxicity;
STEM BARK;
MACROLIDE;
D O I:
10.1016/j.tet.2014.04.007
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Six new limonoids, ivorenoids A-F (1-6), along with ten known analogues, were isolated from an ethanolic extract of the stems of Khaya ivorensis. Their structures were elucidated on the basis of spectroscopic analyses. Compounds 1 and 2 possessed a rare rearranged skeleton of khayanolides and a unique gamma-lactone (C-16/C-8) replacing the common and characteristic delta-lactone D-ring (C-16/C-17) of limonoids. A mechanism of the interesting deuteration of H-2 and H-15 beta of 1, and H-15 beta of the solvent CD3OD due to the keto enol tautomerism was demonstrated. Compounds 3 and 6 showed moderate activity against HL-60 cell line with IC50 values of 15.3 and 17.5 mu M, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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页码:3570 / 3575
页数:6
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