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. 2022 May 20;27(10):3293. doi: 10.3390/molecules27103293

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© 2022 by the authors.

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 (https://creativecommons.org/licenses/by/4.0/).

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Pd-catalyzed intramolecular acyl transfer in opiates: (A) conversion of 3,14-diacetate oxymorphone (16a) according to Machara et al. [67], (B) conversion of 16a according to Gutmann et al. [68], and (C) conversion of 16f, the hydrogenated form of 16a, according to Gutmann et al. [68].