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团片链霉菌(Streptomyces flocculus)产生的大环内酯抗生素复合物包括A-6888C、A-6888X、cirra-mycinsA和B。这些化合物由乙酸乙酯从培养滤液中提取,经逆流分配、高压液相层析分离获得。
The macrolide antibiotic complex produced by Streptomyces flocculus includes A-6888C, A-6888X, cirra-mycinsA and B. These compounds were extracted from the culture filtrate by ethyl acetate and separated by high pressure liquid chromatography after countercurrent distribution.