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Four new metabolites, nocarasins A−C ( 1 − 3 ) and brasiliquinone D ( 4 ), have been isolated from the actinomycete Nocardia brasiliensis IFM 0667, and the structures were elucidated on the basis of spectroscopic data and chemical means. Nocarasins A−C ( 1 − 3 ) and brasiliquinone D ( 4 ) exhibited cytotoxicity and antibacterial activity.
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Tsuda et al. (1999) studied this question.
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