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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Org Lett. 2009 Jan 1;11(1):225–228. doi: 10.1021/ol8024814

Figure 2.

Figure 2

Key COSY (bold) and HMBC (arrow) correlations established the macrocyclic α-pyrone system of neurymenolide A (1). NOE correlations (double-headed arrows) established the stereochemistry of the double bonds in 1.