. 2018 Jun 22;23(7):1515. doi: 10.3390/molecules23071515
© 2018 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 phosphoramidites 6a and 6b [88].