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2004
Terpenes
U 0200
45- 193
Studies on the Constituents of Catalpa Species. Part 9. Iridoids from the Fallen
Leaves of Catalpa ovata G. Don. — Two new iridoids, (I) and (II), and six artifact iridoids are isolated from the title plant. Their structures are elucidated by means of spectral analysis. Additionally, the radical-scavenging activities of these compounds as well
as those of the principal glycosides, isolated from the same plant, are investigated. Martynoside (III) and its cis isomer show potent activities, comparable to that of dl-α-tocopherol. — (MACHIDA, K.; HISHINUMA, E.; KIKUCHI*, M.; Chem. Pharm.
Bull. 52 (2004) 5, 618-621; Tohoku Pharm. Univ., Aoba, Sendai 981, Japan; Eng.) —
H. Hoennerscheid
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