Tetracyclic

For flowers constructed of four whorls, see cyclic flower.

Tetracyclics are cyclic chemical compounds that contain four fused rings of atoms, for example, Tröger's base.

Doxycycline, a tetracyclic antibiotic.

Mirtazapine, a tetracyclic antidepressant.

Some tricyclic compounds having three fused and one tethered ring (connected to main nucleus by a single bond) can also classified as tetracyclic, for example, ciclazindol.^[1]

Tetracyclic compounds have various pharmaceutical uses, such as:

• tetracycline antibiotics
  • Doxycycline
  • Tigecycline
  • Omadacycline
  • Eravacycline
• tetracyclic antidepressants
  • Benzoctamine
  • Loxapine
  • Mazindol
  • Mianserin
  • Mirtazapine^[2]

See also

• Tricyclic
• Heterocyclic