Abstract
Two new 22-membered macrolide metabolites, phthoramycins B (1) and C (2), were isolated from the fermentation broth of Streptomyces sp. HU210. Their structures were elucidated based on extensive spectroscopic techniques including 1D, 2D NMR and HRESIMS data. Compounds 1 and 2 showed moderate cytotoxic activity against human leukemia cell line K562 and lung carcinoma cell line A549.
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Acknowledgements
The research was financially supported by the Key Research and Development Program of Zhejiang Province (Grant No: 2020C02028) and the National Key Research and Development Program of China (2021YFC2600104).
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Zhang, CH., Qi, H., Li, B. et al. Two new 22-membered macrolides from Streptomyces sp. HU210. J Antibiot 75, 650–653 (2022). https://doi.org/10.1038/s41429-022-00563-1
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DOI: https://doi.org/10.1038/s41429-022-00563-1