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. 2016 Jul 20;12:1512–1550. doi: 10.3762/bjoc.12.148

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Copyright © 2016, Hemmerling and Hahn

This is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (https://www.beilstein-journals.org/bjoc/terms)

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Scheme 17 — A zipper mechanism leads to the formation of oxygen heterocycles in monensin biosynthesis [109–111].