A new obtusafuran derivative, lawsonicin (1), and a new naphthaquinone, lawsonadeem (2), along with a known constituent, vomifoliol (3), were isolated from the aerial parts of Lawsonia alba and characterized by chemical transformation and spectroscopic experiments, including 2D‐NMR techniques.
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Siddiqui et al. (2003) studied this question.
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