Araguspongines K and L, new bioactive bis-1-oxaquinolizidine N-oxide alkaloids from Red Sea specimens of Xestospongia exigua

被引:40
作者
Orabi, KY [1 ]
El Sayed, KA
Hamann, MT
Dunbar, DC
Al-Said, MS
Higa, T
Kelly, M
机构
[1] King Saud Univ, Coll Pharm, Dept Pharmacognosy, Riyadh 11451, Saudi Arabia
[2] Univ Mississippi, Sch Pharm, Dept Pharmacognosy, University, MS 38677 USA
[3] Univ Ryukyus, Coll Sci, Dept Marine Chem, Okinawa 9030213, Japan
[4] NIWA Ltd, Auckland, New Zealand
来源
JOURNAL OF NATURAL PRODUCTS | 2002年 / 65卷 / 12期
关键词
D O I
10.1021/np0202226
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In addition to the previously reported (+)-araguspongine A, (+)-araguspongine C, (+)-araguspongine D, (-)-araguspongine E, and (+)-xestospongin 13, two new N-oxide araguspongines, (+)-araguspongine K and (+)-araguspongine L, are described here. Their structures were established on the basis of spectral analyses including H-1-N-15 HMBC. The promising in vitro antimalarial and antituberculosis activities of araguspongine C are reported.
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页码:1782 / 1785
页数:4
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