Jadomycins Derived from the Assimilation and Incorporation of Norvaline and Norleucine

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• 作者：Stephanie N. Dupuis ; Thomas Veinot ; Susan M. A. Monro ; Susan E. Douglas ; Raymond T. Syvitski ; Kerry B. Goralski ; Sherri A. McFarland ; David L. Jakeman
• 刊名：Journal of Natural Products
• 出版年：2011
• 出版时间：November 28, 2011
• 年：2011
• 卷：74
• 期：11
• 页码：2420-2424
• 全文大小：240K
• 年卷期：v.74,no.11(November 28, 2011)
• ISSN：1520-6025

文摘

Streptomyces venezuelae ISP5230 is recognized for the production of chloramphenicol and the jadomycin family of natural products. The jadomycins are angucycline natural products containing a unique oxazolone ring incorporating an amino acid present in the minimal culture media. Substitution of different amino acids results in products of varying biological activity. Analysis of cultures of S. venezuelae ISP5230 incubated with l- and d-norvaline and l- and d-norleucine indicated that only the d-configured amino acids were incorporated into the natural products. Subsequently, jadomycin DNV and jadomycin DNL were isolated and characterized (titers 4 and 9 mg L^鈥?, respectively). The compounds were evaluated in the National Cancer Institute cell line cancer growth inhibition and cytotoxicity screens, for antimicrobial activity against selected Gram-positive and Gram-negative bacteria, and as DNA-cleavage agents in vitro.