13.1 Some antibiotics can be depicted by means of conventional diagrams that can be used for a family of similar products.
13.2 β-Lactams (penicillins and cefalosporins) are shown as below:
13.3 Aminosides are related to 2-deoxy-D-streptamine according to the conventions used for carbohydrates:
13.4 Tetracyclines and rubicins are depicted as follows:
13.5 The representation of the large rings of macrolides is variable. For example:
13.6 The depiction of derivatives of rifamycin is based on that of the parent structure, which is shown as below: