. 2009 Nov 12;7(4):565–575. doi: 10.3390/md7040565
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland
This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Figure 1.
Structures of compounds 1–5.