毒力虫霉EB-82灭蚜菌发酵产物的有效成分研究Ⅰ.灭蚜菌素A的分离和结构鉴定

Studies on the active components of fermentation product from Entomophthora virulenta EB 82 Ⅰ. Isolation and identification of mieyajunsu A

从毒力虫霉（Ｅｎｔｏｍｏｐｈｔｈｏｒａｖｉｒｕｌｅｎｔａ）的菌丝体中，分离得到了一个具有较强杀蚜作用的活性物质灭蚜菌素Ａ。测定了它的各种光谱数据，证明其为ｅｒｇｏｓｔ－５－ｅｎ－３－ｏｌ。

Mieyajunsu A, a strong aphicide and miticide agent, was isolated from the mycelium of Entomophthora virulenta . Its physico chemical properties were determined. Based on the spectral data, mieyajunsu A was proved to be identical to ergost 5 en 3 ol.