Hayashi Hideo, Oka Yuki, Kai Kenji, Akiyama Kohki
Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
Biosci Biotechnol Biochem. 2012;76(9):1765-8. doi: 10.1271/bbb.120365. Epub 2012 Sep 7.
Four new meroterpenoids, named chrodrimanins D-G (4-7), and one known compound, renamed chrodrimanin H (8), were isolated from okara (the insoluble residue of whole soybean) that had been fermented with the YO-2 strain of Talaromyces sp. Their structures were elucidated by spectroscopic methods. Chrodrimanins D (4), E (5), and F (6) showed insecticidal activity against silkworms with respective LD(50) values of 20, 10, and 50 µg/g of diet.
从用特异青霉属YO - 2菌株发酵的豆渣（全大豆的不溶性残渣）中分离出4种新的半萜类化合物，命名为chrodrimanins D - G（4 - 7），以及1种已知化合物，重新命名为chrodrimanin H（8）。通过光谱方法阐明了它们的结构。Chrodrimanins D（4）、E（5）和F（6）对家蚕表现出杀虫活性，其半数致死剂量（LD50）分别为每克饲料20、10和50微克。
