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. Author manuscript; available in PMC: 2018 Sep 27.
Published in final edited form as: Chem Rev. 2017 Jun 5;117(18):11894–11951. doi: 10.1021/acs.chemrev.7b00022

Figure 28.

Figure 28

Site-selective tether-assisted oxidation of steroids. A shorter tether length forces oxidation at C15, while a longer tether allows the benzophenone oxidant to reach C17–H.192–194