Xyloccensins Q-V, six new 8,9,30-phragmalin ortho ester antifeedants from the Chinese mangrove Xylocarpus granatum

被引：76
作者：
Wu, J
Xiao, Q
Zhang, S
Li, X
Xiao, ZH
Ding, HX
Li, QX
机构：
[1] Chinese Acad Sci, Guangdong Key Lab Marine Mat Med, S China Inst Oceanol, Guangzhou 510301, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Inst Organ Chem, Nanchang 330013, Peoples R China
来源：
TETRAHEDRON | 2005年 / 61卷 / 35期
关键词：
absolute stereochemistry; 8,9,30-phragmalin ortho ester; Xylocarpus granatum; antifeedant activity;
D O I：
10.1016/j.tet.2005.06.099
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Six new 8,930-phragnialin ortho esters, named xyloccensins Q V (3 8). have been isolated front (tic stem bark of a Chinese mangrove Xylocarpus granatum, and their structures were elucidated (in the basis of spectroscopic data and chemical means, The absolute sterochemistry of these compounds and xyloccensins O-P (1-2), revised as enantiomeric to all the reported so far, was determined by application of the modified MTPA Mosher ester method and circular dichroism circular dichroisin analysis. Both xyloccensins P and Q exhibited potent antifeedant activity against the third instar larvae of mythinma separata (Walker) at it concentration of 500 ppm. (c) 2005 Published by Elsevier Ltd.
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页码：8382 / 8389
页数：8
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