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Although we have tried to separate these diastereomers (7c-e and 7h-l, we failed to separate them. These compounds decomposed during separation when using preparative HPLC Therefore, we reported 1H NMR spectroscopic data for the mixture of diastereomers of 7h-j and 1H and 13CNMR spectroscopic data for the mixture of diastereomers of 7c-e. Ratios of diastereomers of 7e, 7h, and 7i were determined on the basis of the integration ratio of separated peaks. 13CNMR spectra of 7 h and 7 i were obtained in two sets. Although the 13C NMR spectrum of 7j was obtained in two sets, the ratio of diastereomers of 7j could not be determined. 1H and 13CNMR spectra of 7k and 7l were obtained in one set, indicating that a single diastereomer was produced. In addition, X-ray data of 7k and 7l (see the Supporting Information) were obtained
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13CNMR spectra of 7k and 7l were obtained in one set, indicating that a single diastereomer was produced. In addition, X-ray data of 7k and 7l (see the Supporting Information) were obtained.
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