Justicia lignans VI--prostalidin D, a new arylnaphthalide lignan from Justicia diffusa var. prostrata C.B. Clarke |
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Authors: | Rajasekhar D Subbaraju G V Pillai K R |
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Affiliation: | a Department of Chemistry, Sri Venkateswara University, Tirupati, India |
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Abstract: | A new arylnaphthalide lignan, prostalidin D (6) was isolated as a minor metabolite from Justicia diffusa var. prostrata. 6 contains a rare catechol unit and its structure was confirmed by total synthesis. In addition, seven known lignans, namely, justicidin E (7), helioxanthin (8), justicidin A (9), medioresinol dimethyl ether (10), medioresinol (11), lariciresinol (12) and 8-methoxyisolariciresinol (13) have also been isolated from the same source and identified by direct comparison with authentic samples. |
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Keywords: | Justicia diffusa var. prostrata Justicia prostrata Arylnaphthalide lignans Prostalidin D |
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