What is "labdane"

n. (context organic chemistry English) A natural bicyclic diterpene with the chemical formula C₂₀H₃₈, forming the structural core of a wide variety of natural products.

Labdane is a natural bicyclic diterpene. It forms the structural core for a wide variety of natural products collectively known as labdanes or labdane diterpenes. The labdanes were so named because the first members of the class were originally obtained from labdanum, a resin derived from rockrose plants.

A variety of biological activities have been determined for labdane diterpenes including antibacterial, antifungal, antiprotozoal, and anti-inflammatory activities.