Abstract
An efficient method for the preparation of 8-substituted odoratine [(3-(3 ′, 4 ′-methylenedioxyphenyl)-5,6,7-trimethoxyisoflavone] derivatives, structurally similar to glaziovianin A, a known cytotoxic substance, has been described. The key steps in the synthesis are site selective bromination reaction followed by Suzuki coupling reaction in very good yield. The structural assignment of the bromo derivative was determined utilizing 2D-HMBC and NOEs NMR techniques.
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Acknowledgements
Authors are grateful to GVK Biosciences management for the financial support. We thank Dr. Sudhir Kumar Singh for encouragement and motivation. Help from the analytical department for the analytical data is appreciated. PKH gratefully acknowledges UGC, New Delhi for providing UGC-FRPS research start-up grant.
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The spectroscopic data (1H-NMR, 13C-NMR, IR and HRMS) of synthesized compounds are presented in the Supplementary Information, available at www.ias.ac.in/chemsci.
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KUMAR, P.R., BALAKRISHNA, C., MURALI, B. et al. An efficient synthesis of 8-substituted Odoratine derivatives by the Suzuki coupling reaction. J Chem Sci 128, 441–450 (2016). https://doi.org/10.1007/s12039-016-1042-z
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DOI: https://doi.org/10.1007/s12039-016-1042-z