Abstract
Two new benz[a]anthraquinones 1 and 2 and two known benz[a]anthraquinones 3 and 4 have been isolated as minor components from fermentations of actinomycete WP4669. Structural elucidation was based on standard spectroscopic analysis of compounds 1 and 2 and their acetates 5 and 6. Confirmation of structural assignments was achieved through synthesis of 1 and 2 from PD116740 [7]. Structural elucidation of minor products 8 and 9 and their acetates 10 and 10 produced from this synthetic route is also discussed
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