. 2010 Feb 10;15(2):871–877. doi: 10.3390/molecules15020871
© 2010 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.