New Chrodrimanin Congeners, Chrodrimanins D-H, from YO-2 of Talaromyces sp.

摘要

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 insccticidal activity against silkworms with respective LD_(S0) values of 20,10, and 50 μg/g of diet.