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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 27 — A bicyclisation mechanism forms a β-lactone and a pyrrolidinone and removes the precursor from the assembly line in salinosporamide A (199) biosynthesis [160–161].