Abstract
The title compound C23H26O7, was prepared by esterification of 2-ethyl-7-hydroxy-8-methoxymethyl-4H-chromen-4-one with (S)-(−)-camphanic chloride. The two rings of the chromone system are coplanar, making a dihedral angle of 1.99 (19)°, and the camphanoyl unit substituted at 7-O retains the original bicyclo[2.2.1]heptane conformation of the starting reagent.
Highlights
The title compound C23H26O7, was prepared by esterification of 2-ethyl-7-hydroxy-8-methoxymethyl-4H-chromen-4-one with (S)-(À)-camphanic chloride
The two rings of the chromone system are coplanar, making a dihedral angle of 1.99 (19), and the camphanoyl unit substituted at 7-O retains the original bicyclo[2.2.1]heptane conformation of the starting reagent
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BH2283)
Summary
The title compound C23H26O7, was prepared by esterification of 2-ethyl-7-hydroxy-8-methoxymethyl-4H-chromen-4-one with (S)-(À)-camphanic chloride. Received 26 April 2010; accepted 20 May 2010 Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.005 A; R factor = 0.046; wR factor = 0.120; data-to-parameter ratio = 7.3.
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