Germacranolides and a new type of guaianolide from Acanthospermum hispidum

被引：26
作者：
Cartagena, E
Bardón, A
Catalán, CAN
de Hernández, ZNJ
Hernández, LR
Joseph-Nathan, P
机构：
[1] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, Mexico City 07000, DF, Mexico
[2] Univ Nacl Tucuman, Fac Bioquim Quim & Farm, Inst Quim Organ, RA-4000 San Miguel De Tucuman, Tucuman, Argentina
来源：
JOURNAL OF NATURAL PRODUCTS | 2000年 / 63卷 / 10期
关键词：
D O I：
10.1021/np9905057
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The aerial parts of an Argentinian collection of Acanthospermum hispidum afforded 26 sesquiterpene lactones, including the two guaianolides (1 and 2) having a novel oxygen bridge between C-4. and C-14, three new cis,cis-germacranolides (4, 7, and 8), and two new melampolides (25 and 26). Guaianolides 1 and 2 seem to derive biosynthetically from the germacranolide 27 having the (1DD5)-D-14,15 conformation. The structures were elucidated using extensive spectroscopic analysis.
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页码：1323 / 1328
页数：6
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