. 2016 Sep 8;21(9):1193. doi: 10.3390/molecules21091193
© 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 1.
Natural enmein-type ent-kaurane diterpenoids.