. 2020 Jul 13;25(14):3190. doi: 10.3390/molecules25143190
© 2020 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/).
Scheme 1.
Synthesis of triazolopyridopyrimidine 3a–k.