. 2017 Sep 21;22(10):1583. doi: 10.3390/molecules22101583
© 2017 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 2.
Chemical structures of compounds 1–8.