Macrolides · Pharmacology

The macrolide class is defined by a characteristic multi-atom ring to which deoxy sugars are attached. What is this ring called?

  1. Beta-lactam ring
  2. Macrocyclic lactone ring
  3. Thiazolidine ring
  4. Tetracyclic naphthacene ring
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Correct answer: Macrocyclic lactone ring

Macrolides are characterized by a large macrocyclic lactone ring (usually 14, 15, or 16 atoms) to which one or more deoxy sugars are attached. The size of the ring determines the specific subclass of the drug.

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