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  • Title: [A new polyketide from marine-derived Streptomyces sp.MDW-06].
    Author: Wang C, Qiu ZY, Lei FH, Tan XC, Jiang MG, Li H, Li XY.
    Journal: Zhongguo Zhong Yao Za Zhi; 2019 May; 44(10):2090-2095. PubMed ID: 31355566.
    Abstract:
    To isolate and identify secondary metabolites of marine-derived Streptomyces sp.MDW-06,the isolations and purifications of compounds were performed by means of column chromatography over silica gel. And their structures were elucidated through the spectroscopic analysis of MS,NMR and specific rotations. The bioactivities were assayed by paper diffusion and DPPH method. From the fermentation broth of marine-derived Streptomyces sp.MDW-06,five compounds( 1-5) were isolated and identified as streptopentanoic acid( 1),germicidin A( 2),germicidin B( 3),isogermicidin A( 4),isogermicidin B( 5) and oxohygrolidin( 6),respectively. Compound 1 is a new compound. Compound 1 shows DPPH radical scavenging activity with 36. 4% at 100 mg·L~(-1).
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