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  • Title: Blanchaquinone: a new anthraquinone from an Australian Streptomyces sp.
    Author: Clark B, Capon RJ, Stewart M, Lacey E, Tennant S, Gill JH.
    Journal: J Nat Prod; 2004 Oct; 67(10):1729-31. PubMed ID: 15497950.
    Abstract:
    Chemical analysis of an Australian Streptomyces species yielded a range of known anthracyclines and biosynthetically related metabolites, including daunomycin (1), epsilon-rhodomycinone (2), 11-hydroxyauramycinone (3), 11-hydroxysulfurmycinone (4), aklavinone (5), bisanhydro-gamma-rhodomycinone (6), and the anthraquinone 7, as well as the hitherto unreported blanchaquinone (8). The structure assigned to 8 was secured by detailed spectroscopic analysis and correlation to known analogues, such as the anthraquinone 7. This account also represents the first natural occurrence of 3, 4, and 7 and the first spectroscopic characterization of 11-hydroxysulfurmycinone (4).
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