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An unusual secolignan glycoside, juspurpurin (1), and a new arylnaphthalene glycoside, justalakonin (2), together with eight known lignans were isolated from the whole plants of Justicia purpurea. Compound 1 is the first glycoside of a rare group of secolignans. The structures of the new compounds 1 and 2 were established using 1D and 2D NMR ((1)H-(1)H COSY, HMQC, and HMBC) spectral data and by chemical transformations.


Jakka Kavitha, Kovuru Gopalaiah, Dodda Rajasekhar, Gottumukkala V Subbaraju. Juspurpurin, an unusual secolignan glycoside from Justicia purpurea. Journal of natural products. 2003 Aug;66(8):1113-5

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PMID: 12932137

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