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A new naphthoquinone, 2,7-dihydroxy-8-formyl-5-isopropyl-3-methyl-1,4-naphthoquinone (1) together with a known naphthoquinone, 8-formyl-7-hydroxy-5-isopropyl-2-methoxy-3-methyl-1,4-naphthoquinone (2), has been isolated from the heartwood of Ceiba pentandra. The structures of 1 and 2 have been elucidated by extensive 1D and 2D NMR experiments.

Citation

P Hari Kishore, M Vijaya Bhaskar Reddy, D Gunasekar, Cristelle Caux, Bernard Bodo. A new naphthoquinone from Ceiba pentandra. Journal of Asian natural products research. 2003 Sep;5(3):227-30

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PMID: 12931857

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