Abstract

Phytochemical investigation of Caragana tangutica Maxim. resulted in the isolation of ten flavonoids, melilotocarpan A (1), medicarpin (2), maackiain (3), 2-(2′4′-dihydroxyphenyl)-3-methyl-6-methoxy benzofuran (4), cajanin (5), formononetin (6), 7,3′-dihydroxy-5-methoxy isoflavone (7), texasin (8), 2′,4,4′-trihydroxy chalone (9) and bolusanthin III (10), as well as one aromatic acid, p-ethoxy benzoic acid (11). Compounds 1, 4, 9, 10 and 11 were isolated for the first time from the genus Caragana. The chemotaxonomic significance of these compounds was summarized.

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