Chemical Constituents from Pedicularis rex C. B. Clarke

Hong-Biao Chu 1 , 2 , Ning-Hua Tan 3 ,  and Yu-Mei Zhanga 1
  • 1 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
  • 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • 3 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204

One new ionone glycoside, pedicurexoside (1), one new flavonoid, 5, 4′-dihydroxy-3′-methoxyflavone- 7-O-6″-n-butyryl-β -D-glucopyranoside (2), two new iridoid glycosides, 6-O-ethyl-aucubin (7), 6-O-ethyl-epiaucubin (8), and one new phenylpropanoid glycoside, 4-hydroxy-phenylpropenyl- α-L-rhamnopyranosyl-(1→3)-4-O- feruloyl-β -D-glucopyranoside (13), together with eleven known compounds, apigenin (3), luteolin (4), chrysoeriol (5), luteolin-7-O-β -D-glucopyranoside (6), aucubin (9), yuheinoside (10), euphroside (11), mussaenoside (12), verbascoside (14), martynoside (15) and isomartynoside (16), were isolated from Pedicularis rex. The structures of 1 - 16 were elucidated mainly by 1D and 2D NMR techniques, MS evidence and chemical methods. The ionone derivative with thirteen carbon atoms was found in Pedicularis plants for the first time.

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Zeitschrift für Naturforschung B is an international scientific journal which publishes original papers, microreviews, and letters from all areas of inorganic chemistry, solid state chemistry, coordination chemistry, molecular chemistry, and organic chemistry.

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