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A new polyene macrolide antibiotic, machidamycin, produced by Streptomyces sp. K22-0017

Abstract

A new polyene macrolide, machidamycin (1), and a known compound YS-822A (2), were obtained by physicochemical screening from a culture broth of Streptomyces sp. K22-0017. The structures were elucidated using MS and 1D/2D NMR analyses. Compound 1 exhibited weak antifungal activity against Candida albicans and Mucor racemosus. Furthermore, 1 showed stronger antileishmanial activity than the existing drug paromomycin.

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Acknowledgements

We are grateful to Distinguished Emeritus Professor Satoshi Ōmura (Kitasato University) for his helpful support and valuable suggestions and to Dr. K. Nagai, Ms. R. Seki, and Ms. N. Sato, School of Pharmacy, Kitasato University, for the analysis of mass and NMR spectra. We thank Prof. S. Croft and Dr. V. Yardley at London School of Hygiene & Tropical Medicine (LSHTM) for their kind supports and providing us L. major MHOM/SA/62/JISH118 strain. We also thank DNDi for supports for antileishmanial screening. This study was partially supported by a Grant-in-Aid for Scientific Research on Innovative Areas from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (Grant Number 19H05685) and the Platform Project for Supporting Drug Discovery and Life Science Research (Basis for Supporting Innovative Drug Discovery and Life Science Research (BINDS)) from the Japan Agency for Medical Research & Development (AMED) under Grant Numbers JP19am0101096 (Phase I) and JP22ama121035 (Phase II). This study was partially supported by JSPS KAKENHI (Grant Numbers JP21K06617 and JP23H04884).

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Correspondence to Yuki Inahashi.

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Awano, Y., Ishii, R., Takahashi, Y. et al. A new polyene macrolide antibiotic, machidamycin, produced by Streptomyces sp. K22-0017. J Antibiot (2024). https://doi.org/10.1038/s41429-024-00737-z

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