Investigation of Three Stilbene Derivatives by X-ray Crystallography and NMR Spectroscopy

Crystal structure determinations demonstrate unambiguously the steric assignments of (Z)-2-hydroxy-3,3',4'-trimethoxystilbene (C₁₇H₁₈O₄), (E)-2-hydroxy-3,3',4'-trimethoxystilbene (C₁₇H₁₈O₄) and (E)-2-acetoxy-3,3',4'-trimethoxystilbene (C₁₉H₂₀O₅). ¹³C NMR data and UV data for the compounds are also reported. The steric assignments of structurally related compounds described in the literature are discussed on the basis of the crystallographic and spectral results.

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