Journal of the Chemical Society. Perkin transactions I p. 1773 - 1775 (1996)
Update date:2022-08-11
Topics:
Tsuda, Masashi
Sato, Hiroyasu
Tanaka, Yasushi
Yazawa, Katsukiyo
Mikami, Yuzuru
Sasaki, Takuma
Kobayashi, Jun'ichi
Three new cytotoxic benz[a]anthraquinones with an ethyl group at C-3, brasiliquinones A-C 1-3, have been isolated from the actinomycete Nocardia brasiliensis IFM 0089, and their structures elucidated on the basis of spectroscopic data and by chemical means. Brasiliquinone A 1 is the first benz[a]anthraquinone possessing ristosamine as an O-glycoside moiety, while brasiliquinones B 2 and C 3 correspond to the aglycone of 1 and the 8-O-methyl derivative of 2, respectively.
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