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. 2020 Nov 9;60(2):685–689. doi: 10.1002/anie.202012099

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© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Top: The X‐ray crystal structure of estrone derivative 18 (Deposition Number 2022960 contains the supplementary crystallographic data for this paper. These data are provided free of charge by the joint Cambridge Crystallographic Data Centre and Fachinformationszentrum Karlsruhe Access Structures service www.ccdc.cam.ac.uk/structures.). Thermal ellipsoids are shown at 30 % probability. Bottom: Excerpt of the packing diagram of compound 18 presenting the formation of a linear chain along a‐axis involving π⋅⋅⋅π and C−H⋅⋅⋅O interactions.