Volume 128, Issue 35 pp. 10434-10438
Zuschrift

Discovery and Total Synthesis of Streptoaminals: Antimicrobial [5,5]-Spirohemiaminals from the Combined-Culture of Streptomyces nigrescens and Tsukamurella pulmonis

Dr. Ryosuke Sugiyama

Dr. Ryosuke Sugiyama

Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501 Japan

Present address, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045 Japan

Search for more papers by this author
Dr. Shinichi Nishimura

Corresponding Author

Dr. Shinichi Nishimura

Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501 Japan

Search for more papers by this author
Dr. Taro Ozaki

Dr. Taro Ozaki

Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657 Japan

Search for more papers by this author
Dr. Shumpei Asamizu

Dr. Shumpei Asamizu

Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657 Japan

Search for more papers by this author
Prof. Dr. Hiroyasu Onaka

Prof. Dr. Hiroyasu Onaka

Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657 Japan

Search for more papers by this author
Prof. Dr. Hideaki Kakeya

Corresponding Author

Prof. Dr. Hideaki Kakeya

Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501 Japan

Search for more papers by this author
First published: 27 July 2016
Citations: 14

Abstract

A series of lipidic spirohemiaminals, designated streptoaminals, is reported. These were discovered by surveying the unique molecular signatures identified in the mass spectrometry data of the combined-culture broth of Streptomyces nigrescens HEK616 and Tsukamurella pulmonis TP-B0596. Mass spectrometry analysis showed that streptoaminals appeared as a cluster of ion peaks, which were separated by 14 mass unit intervals, implying the presence of alkyl chains of different lengths. The chemical structures of these compounds were elucidated by spectroscopic analysis and total synthesis. Streptoaminals with globular structures showed broad antimicrobial activities, whereas the planar structures of the 5-alkyl-1,2,3,4-tetrahydroquinolines found in the same combined-culture did not. This work shows the application of microbes as reservoirs for a range of chemical scaffolds.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.