著者
伊東 秀之 三宅 陽子 吉田 隆志
出版者
公益社団法人 日本薬学会
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.43, no.7, pp.1260-1262, 1995
被引用文献数
32

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.