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. Author manuscript; available in PMC: 2016 Mar 24.
Published in final edited form as: Nature. 2015 Sep 16;525(7570):507–510. doi: 10.1038/nature14902

Figure 1. Structure and synthetic analysis of (+)-batzelladine B (1).

Figure 1

a, The chemical structures of (+)-batzelladine B (1) and (+)-batzelladine A (2), with embedded pyrrole substructures shown. b, The strategy we pursued calls for elaboration of the pyrrole-based starting materials 3 and 6 to the vessel and anchor substructures of 1 (5 and 8, respectively) via the intermediates 4 and 7.