. 2016 Dec 2;21(12):1649. doi: 10.3390/molecules21121649
© 2016 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure 22.
Structures of synthetic derivatives 117–124.