. 2021 Mar 9;36(1):727–736. doi: 10.1080/14756366.2021.1885396
© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 4.
Chemical structures for compounds 5, 9, 11 and 24.