24(24(1))[Z]-DEHYDROAMARASTERONE-B, A PHYTOECDYSTEROID FROM SEEDS OF LEUZEA-CARTHAMOIDES

Authors
BALTAYEV UA DINAN L GIRAULT JP LAFONT R
Citation
Ua. Baltayev et al., 24(24(1))[Z]-DEHYDROAMARASTERONE-B, A PHYTOECDYSTEROID FROM SEEDS OF LEUZEA-CARTHAMOIDES, Phytochemistry, 46(1), 1997, pp. 103-105
Citations number
19
Categorie Soggetti
Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
46
Issue
1
Year of publication
1997
Pages
103 - 105
Database
ISI
SICI code
0031-9422(1997)46:1<103:2APFSO>2.0.ZU;2-X
Abstract
A new phytoecdysteroid, 24(24(1))[Z]-dehydroamarasterone B, has been i solated from seeds of Leuzea (Rhaponticum) carthamoides. It has been u nambiguously identified by CIMS, C-13 NMR and H-1 NMR spectroscopy. Th e biological activity of the ecdysteroid has been determined in the Dr osophila melanogaster, B-II bioassay. The ED50 (5.2 x 10(-7) M) is 70- fold higher than that for 20-hydroxyecdysone (7.5 x 10(-9) M). (C) 199 7 Elsevier Science Ltd. All rights reserved.