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. Author manuscript; available in PMC: 2018 May 26.
Published in final edited form as: J Nat Prod. 2017 May 2;80(5):1639–1647. doi: 10.1021/acs.jnatprod.7b00247

Table 3.

Calculated Internuclear Distances and NOESY Signal Strength for 2a

Proton Pair Weighted average distance (Å) NOESY intensity
H3-H9a 2.16 strong
H3-H9b 3.86 medium
H3-H5 3.71 strong
H3-H8 3.26 v. weak
H1-H14 3.02 medium
H3′b-H4′ 3.15 medium
H6-H15 4.72 medium
H6-H8 3.35 medium
H8-H15 3.01 strong
H5-H15 2.93 weak
a

See SI for details of calculations.