{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T16:38:52Z","timestamp":1770136732472,"version":"3.49.0"},"reference-count":41,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2013,6,14]],"date-time":"2013-06-14T00:00:00Z","timestamp":1371168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Marine Drugs"],"abstract":"<jats:p>Three new napyradiomycins (1\u20133) were isolated from the culture broth of a marine-derived actinomycete strain SCSIO 10428, together with six known related analogues napyradiomycin A1 (4), 18-oxonapyradiomycin A1 (5), napyradiomycin B1 (6), napyradiomycin B3 (7), naphthomevalin (8), and napyradiomycin SR (9). The strain SCSIO 10428 was identified as a Streptomyces species by the sequence analysis of its 16S rRNA gene. The structures of new compounds 1\u20133, designated 4-dehydro-4a-dechlorona pyradiomycin A1 (1), 3-dechloro-3-bromonapyradiomycin A1 (2), and 3-chloro-6, 8-dihydroxy-8-\u03b1-lapachone (3), respectively, were elucidated by comparing their 1D and 2D NMR spectroscopic data with known congeners. None of the napyradiomycins 1\u20139 showed antioxidative activities. Napyradiomycins 1\u20138 displayed antibacterial activities against three Gram-positive bacteria Staphylococcus and Bacillus strains with MIC values ranging from 0.25 to 32 \u03bcg mL\u22121, with the exception that compound 3 had a MIC value of above 128 \u03bcg mL\u22121 against Staphylococcus aureus ATCC 29213. Napyradiomycins 2, 4, 6, and 7 exhibited moderate cytotoxicities against four human cancer cell lines SF-268,  MCF-7, NCI-H460, and HepG-2 with IC50 values below 20 \u03bcM, while the IC50 values for other five napyradiomycins 1, 3, 5, 8 and 9 were above 20 \u03bcM.<\/jats:p>","DOI":"10.3390\/md11062113","type":"journal-article","created":{"date-parts":[[2013,6,14]],"date-time":"2013-06-14T11:47:47Z","timestamp":1371210467000},"page":"2113-2125","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":61,"title":["Antibacterial and Cytotoxic New Napyradiomycins from the Marine-Derived Streptomyces sp. SCSIO 10428"],"prefix":"10.3390","volume":"11","author":[{"given":"Zhengchao","family":"Wu","sequence":"first","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sumei","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuchan","family":"Chen","sequence":"additional","affiliation":[{"name":"Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou 510070, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7084-4204","authenticated-orcid":false,"given":"Kumar","family":"Saurav","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingbo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haibo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenjun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weimin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou 510070, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Si","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Changsheng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2013,6,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1102","DOI":"10.1128\/aem.57.4.1102-1108.1991","article-title":"Distribution of actinomycetes in near-shore tropical marine-sediments","volume":"57","author":"Jensen","year":"1991","journal-title":"Appl. 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