Stereochemical Assignment and Biological Evaluation of BE-14106 Unveils the Importance of One Acetate Unit for the Antifungal Activity of Polyene Macrolactams

详细信息    查看全文

• 作者：Kohei Fujita ; Ryosuke Sugiyama ; Shinichi Nishimura ; Naoki Ishikawa ; Midori A. Arai ; Masami Ishibashi ; Hideaki Kakeya
• 刊名：Journal of Natural Products
• 出版年：2016
• 出版时间：July 22, 2016
• 年：2016
• 卷：79
• 期：7
• 页码：1877-1880
• 全文大小：219K
• 年卷期：0
• ISSN：1520-6025

文摘

Heronamides are a class of potent antifungal metabolites produced by marine-derived actinomycetes. The number of hydroxy groups and the stereochemistry of the two hydroxylated methine carbons are important for the activity of heronamide C, whereas the effect of the hydrocarbon chains is not known. In this study, the stereochemistry and the biological activity of BE-14106, another member of the heronamide class of antibiotics, isolated from an actinomycete Actinoalloteichus cyanogriseus IFM 11549 was investigated. Spectroscopic analysis coupled with photo- and O₂-induced conversion revealed that BE-14106 and the heronamides had the same stereochemistry. BE-14106 showed potent growth inhibition against fission yeast cells with an MIC value of 0.50 μM (0.21 μg/mL), being 4 times less potent than heronamide C, which revealed the importance of the structure of the hydrocarbon tail for the activity.