. 2019 May 1;24(9):1702. doi: 10.3390/molecules24091702
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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 13.
Synthesis of Np-Tbt-β2,2 h bis-Orn-OMe 19.