New compounds, nanaomycin F and G, discovered by physicochemical screening from a culture broth of Streptomyces rosa subsp. notoensis OS-3966

  • J Biosci Bioeng. 2015 Nov;120(5):596-600. doi: 10.1016/j.jbiosc.2015.03.018.
Takuji Nakashima  1 ,  Panitch Boonsnongcheep  2 ,  Toru Kimura  3 ,  Masato Iwatsuki  4 ,  Noriko Sato  5 ,  Kenichi Nonaka  4 ,  Sompop Prathanturarug  2 ,  Yōko Takahashi  6 ,  Satoshi Ōmura  6
Affiliations
  • 1. Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan. Electronic address: [email protected].
  • 2. Department of Pharmaceutical Botany, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok 10400, Thailand.
  • 3. Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
  • 4. Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
  • 5. Graduate School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
  • 6. Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
PMID: 26100318 DOI: 10.1016/j.jbiosc.2015.03.018
Abstract

Two new compounds, nanaomycin F and G, were isolated by physicochemical screening method from cultured broth of Streptomyces rosa subsp. notoensis OS-3966, which is known to produce nanaomycin A, B, C, D, and E. Nanaomycin F is a new nanaomycin analog, a 4a-hydroxyl analog of nanaomycin B. Nanaomycin G has a unique skeleton with 1-indanone infused with a tetrahydropyran ring. Nanaomycin A possesses broad antimicrobial activity but nanaomycin F and G demonstrated no bioactivity against all bacteria and fungi tested in this study. In addition, in both nanaomycin F and G, the production of superoxide radicals was majorly decreased in comparison to nanaomycin A. It was considered that the antimicrobial properties were lost as a result of the decrease in production of the superoxide radicals.

Keywords
Nanaomycin F; Nanaomycin G; Nanaomycin analogs; Physicochemical screening; Streptomyces sp..
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