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. Author manuscript; available in PMC: 2016 Dec 21.
Published in final edited form as: Angew Chem Int Ed Engl. 2015 Nov 16;54(52):15705–15710. doi: 10.1002/anie.201507418

Figure 2.

Figure 2

Confirmation of Am3 (4) structural revision using DP4 calculations. Diastereomers A–D for the relative configuration revision at C51 showing DP4 probability supporting the structural revisions made by Ebine et al.[5a] Original JBCA for 4. 2J(C51, H50) value of −2.5 Hz is considered an “intermediate” value resulting in the misassignment of C51. The “large” value for 3J(H44, H43) leads to an unambiguous assignment.