Disaccharide daunorubicin analogs

Natural anthracycline analogs isolated from Streptomyces sp. often contain two or more sugars connected by axial (l->4) linkage. The anthracycline disaccharides or oligosaccharides invariably possess amino sugar as the first moiety attached to the aglycon (38,56). For instance, daunosaminyl daunorubicin (Figure 6), which is isolated from fermentation, contains two... 

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