Three new piscicidal triterpenens named irisgermanicals A, B and C along with seven known iridal-type triterpenes including iripallidal and iriflorental were isolated from the bark of Iris germanica rhizome, upon bioassay-guided fractionation using the Medaka (killie-fish; Oryzias latipes), and their bicyclic structures were elucidated based on the spectral analyses. Irisgermanicals B and C were characterized as geometrical iriflorental and iripallidal isomers, respectively, concerning the α,β-unsaturated aldehyde moiety. The piscicidal activity was observed for bicyclic iridals, among which iriflorental exhibited most potent activity. © 1995, The Pharmaceutical Society of Japan. All rights reserved.
CITATION STYLE
Ito, H., Miyake, Y., & Yoshida, T. (1995). New Piscicidal Triterpenes from Iris Germanica. Chemical and Pharmaceutical Bulletin, 43(7), 1260–1262. https://doi.org/10.1248/cpb.43.1260
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