Abstract
The authors wish to inform readers that there are several minor errors and omissions in the chemical structures of compounds 1–3 shown in Figure 1 of this paper [1]. Their structures were re-elucidated by detailed analysis of the NMR, MS, and X-ray crystallographic data. The E-ring of 1–3 is a five-membered ring, and the hydroxyls of 3 at C-6 and C-7 are both in a β-orientation rather than α. The corrected Figure 1 is shown below.[...]
Highlights
Crystal X-ray diffraction data were collected on a Aglient Technologies Gemini A Ultra system with Cu Kα radiation (λ = 1.54184 Å)
The structure was solved by direct methods (SHELXS-97) and refined using full-matrix least-squares difference Fourier techniques
Crystals suitable for X-ray diffraction 3 was obtained by slow evaporation of a solution in acetone
Summary
X-ray Structure Determination of 3 (Figure 2) Crystal X-ray diffraction data were collected on a Aglient Technologies Gemini A Ultra system with Cu Kα radiation (λ = 1.54184 Å).
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