. 2009 Oct 19;14(10):4166–4179. doi: 10.3390/molecules14104166
© 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/).
Scheme 1.
Synthetic routes of the target compounds.