Abstract
Five new polyketide endoperoxides, manadodioxans A−E, were isolated from the marine sponge Plakortis bergquistae. Manadodioxan E showed antimicrobial activity against Escherichia coli at 10 μg/disk, while its oxo congener, manadodioxan D, was inactive.
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Acknowledgments
We thank Dr. H. Kobayashi of the University of Tokyo and Dr. H. Rotinsulu of Universitas Pembangunan for collecting the sponges. This work was supported by Grants-in-Aid for Scientific Research (nos. 18406002, 25293025, and 26305005 to S.T.) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.
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Gushiken, M., Kagiyama, I., Kato, H. et al. Manadodioxans A−E: polyketide endoperoxides from the marine sponge Plakortis bergquistae . J Nat Med 69, 595–600 (2015). https://doi.org/10.1007/s11418-015-0920-x
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DOI: https://doi.org/10.1007/s11418-015-0920-x