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cladinose

n. (context carbohydrate English) A deoxy sugar ''(4R,5S,6S)-4-methoxy-4,6-dimethyl-tetrahydropyran-2,5-diol'' that is a component of some antibiotics

Wikipedia
Cladinose

Cladinose is a hexose deoxy sugar that in several antibiotics (such as erythromycin) is attached to the macrolide ring.

In ketolides, a relatively new class of antibiotics, the cladinose is replaced with a keto group.