Ambewelamides A and B, antineoplastic epidithiapiperazinediones isolated from the lichen Usnea sp.

Authors
Williams, DE Bombuwala, K Lobkovsky, E de Silva, ED Karunaratne, V Allen, TM Clardy, J Andersen, RJ
Citation
De. Williams et al., Ambewelamides A and B, antineoplastic epidithiapiperazinediones isolated from the lichen Usnea sp., TETRAHEDR L, 39(52), 1998, pp. 9579-9582
Citations number
15
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
39
Issue
52
Year of publication
1998
Pages
9579 - 9582
Database
ISI
SICI code
0040-4039(199812)39:52<9579:AAABAE>2.0.ZU;2-V
Abstract
Two potently cytotoxic epidithiapiperazinediones, ambewelamides A (1) and B (2), have been isolated from the lichen Usnea sp. collected in Sri Lanka. The structures were determined by a combination of X-ray crystallographic a nd spectroscopic analyses. (C) 1998 Elsevier Science Ltd. All rights reserv ed.