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. 2017 Dec 29;16(1):5. doi: 10.3390/md16010005

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© 2017 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 (http://creativecommons.org/licenses/by/4.0/).

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¹H and ¹³C correlations between calculated isotropic shieldings for the two simulated diastereoisomers of (3,4)-epoxy-pinnatifidenyne and experimentally observed chemical shifts for compound 4. Fitting parameters are indicated.