Opantimycin A, a new metabolite isolated from Streptomyces sp. RK88-1355

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We thank Dr Y Hongo in RIKEN for the HRESIMS measurements, Ms H Aono, Ms M Tanaka, Dr J Otaka and Mr K Yamamoto in RIKEN for activity tests. This work was supported in part by JSPS KAKENHI Grant Numbers 24248022 and 26450148, and grant-in-aid from Research Program on Hepatitis from the Japan Agency for Medical Research and Development, AMED.

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Correspondence to Hiroyuki Osada.

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