1956 年 76 巻 10 号 p. 1136-1138
The crystals of m. p. 110°, isolated from orange oil by Komatsu and Tanaka in 1930 and named auraptin by Nomura in 1950, who assumed it to be a new furocoumarin derivative, was confirmed to be identical with isoimperatorin obtained from the root of Imperatoria ostruthium L., an Umbelliferae plant growing in Europe.